Nemo_Server_Manual_v1.pdf

8/9/2019 Nemo_Server_Manual_v1.pdf

1/47

Nemo Server Guide


2/47

© 2010 by Anite Finland Ltd. All rights reserved.This manual, as well as the software described in it, is furnished under license and may only be usedor copied in accordance with the terms of such license. The information in this manual is intended forinformational use only and is subject to change without notice. Anite Finland Ltd assumes noresponsibility or liability for any errors or inaccuracies that may appear in this user manual.

Except as permitted by such license, no part of this publication may be reproduced or transmitted inany form or by any means, electronic, mechanical, recording, or otherwise, without the prior writtenpermission of Anite Finland Ltd.Windows®, Windows® 2000 and Windows® XP, Outlook®, and Internet Explorer are registeredtrademarks of the Microsoft® Corporation in the United States and other countries. MapInfo® andMapX® are registered trademarks of MapInfo® Corporation. CDMA 2000® is a registered trademarkof the Telecommunications Industry Association (TIA -USA). The license management portion of thisLicensed Technology is based on SentinelLM* © 1989-2003 Rainbow Technologies, Inc. All rightsreserved.

Revision 5.40.02, Last edited March 2011


3/47

3

CONTENTS

INTRODUCTION 5 DATA TESTING 5

AUDIO TESTING 5

INSTALLATION 6 Step 1: Installing the server 6

Step 2: Booting the server 7

Step 3: Opening terminal 8

Step 4: Change the superuser password 8

Step 5: Configure LAN (optional) 9

Step 6: Configure WAN (optional) 11

Step 7: Restart configured network interfaces 11

Step 8: Configure Samba workgroup (optional) 11

Step 9: Determining server’s IP addresses (optional) 12

Step 10: Calibration (Audiotest PSTN Openline4 only) 12

Step 11: Busy-tone wizard (Audiotest PSTN only, mandatory) 13

Step 12: Determining gain settings (Audiotest only, optional)13

NEMO SERVER MANAGER 16

Voice Quality monitor 16 TCP/IP monitor 17

Log monitor 18

NSM menu 19

Settings menu 21

NEMO FILE MANAGER 25

ADMINISTRATION 27 Samba/Windows file sharing 27

VNC and Remote Desktop 27

DATA-TESTING 29 WWW 29

FTP 29

E-Mail 29

RTSP 30

IPERF 31

APPENDICES 32 Server users and passwords 32


4/47

4

Measurement Guidelines 32

The se rver’s main WWW page 35

PPPOE Instructions 35

Manual configuration 36

Step 5: Configure LAN (optional) 36

Step 6: Configure WAN (optional) 37

Step 7: Restart configured network interfaces 38

Updating Instructions 38

APPENDIX 1 40 NEMO SERVER AUDIO OPTION (VOICE QUALITY) 40

NEMO SERVER DATA TEST OPTION 41

NEMO SERVER AUDIO& DATA TEST OPTION 41

APPENDIX 2 43 NEMO SERVER NETWORKING 43

Static Public Address 43

Dynamic NAT 45

Debugging 45

INDEX 47


5/47

5

INTRODUCTION

This chapter describes procedures for Nemo Server on-site installation and calibration. The servermust be at the final installation location at the customer’s premises.

DATA TESTING

For smooth operation, i.e. measurement file collection, server controlling, it is recommended that theserver is connected to LAN (at least the LAN cable must be connected for the VQ-service to work),and if the server is to be used as a data-testing and/or field measurement file hub with Nemo Outdoor,Q, Handy or Autonomous, an external Internet connection is required additionally.

Note that the server is properly firewalled and will not route network traffic between the LANand WAN interfaces.

AUDIO TESTING

If the server has one or more Audiotest options, dedicated fixed line(s) must be available, as the linelevel adjustments are made using these lines. Use only included cables but if they are not longenough, any other high-quality phone cable can be used as long as all of the cables are identical. Ifthe server is moved, or lines or cables changed later, electrical properties of the new lines areprobably different from the earlier ones, and calibration has to be redone. Test all fixed lines byconnecting an analogue phone to the line and making a test call to it with a mobile phone. Remember

to check that audio goes through in both directions.

Checklist: The server is at the final location at the customer’s premises. There is at least one working fixed line available. At least one fixed-line phone number is known. The fixed line is reserved for VQ testing and will be used with the server. All fixed line cables are identical. All fixed lines are tested with phone. Primary rate ISDN E1 connection is active with parameters: CCS, HDB3 and NCRC4

NOTE: Do not update the server operating system! Kernel updating will most probablycease the operation of the Nemo Server applications. Instead, you should wait for a serverupdate from Anite.

NOTE: Do not change any system regional settings except the time-zone. The server has tobe rebooted after time-zone is changed.

NOTE: It is no longer required to restart the voiceqd service after settings are changed.Instead, the voiceqd service detects configuration changes after 10s maximum, and reloadsconfigurations on the fly. Configuration changes may affect ongoing test calls if, e.g., call

duration is changed. However, test sample changes will become active from the next testcall on.


6/47

6

INSTALLATION

Step 1: Installing the server

Please refer to the enclosed Dell server installation documents for how to set up the power, keyboard,mouse and display.

Before connecting the power cable, make sure that the voltage selector of server power isset according to local mains voltage. By default it is set to 230VAC. Do not connect theserver to the Internet at this time – only connect the LAN interface cable.

Depending on the installed Audiotest options, the server has 0 or 4 or 8 analogue Loop Start (FXO)RJ-11 ports for connecting with POTS (PSTN) lines, or one RJ45 port for connecting with the ISDN-PRI E1 line.

Dell SC440 server with Openline4 Connect fixed lines to the RJ-11 connectors which are located on the rear side of the server. There isno need to configure the number of each line as it does not matter which line goes to which portunless the call back feature is used – in this case keep track with which line number goes to whichport. Line 0 is port 0 of the upper card and line 4 is port 0 of the lower card and so on. Remember touse identical cables with all lines.

Dell T100 server with OpenPCIIn this configuration the T100 server is delivered with one or two splitter boxes. The splitter boxconnects to the OpenPCI cards via the RJ45 socket. One splitter box converts one RJ45 socket to fourRJ11 sockets.


7/47

7

Dell T100 server with OpenPRIIn this configuration the T100 server is delivered with OpenPRI ISDN-PRI card that has one RJ45connector. Connect the port to E1 interface with proper cable supplied by the telco provider. Note thatonly E1 interface with CCS signalling is supported with parameters NCRC4 and HDB3. Maximumnumber of timeslots usable for VQ-tests is limited to 10 due to processing power limitations.Standard E1 pinout for RJ45 jack: pins 1-2: RX- RX+ and pins 4-5: TX- TX+

Dell T110 server with OpenPCIe or OpenPRIeIn this configuration the T110 server is delivered either with OpenPCIe or OpenPRIe PCI-Expresscard. Both cards should be installed to the lowest PCI-E 1x slot. Otherwise the same instructions applythan with T100 above.

Step 2: Booting the server

Switch on the server and wait until the Logon prompt appears.Log on as root (the superuser on Linux systems):Username: root Password:Server 2.0.1: 6yV-1pSc Server 2.1.0 and later: -2eF6aX7

After the logon has completed, the Fedora 8 (server 2.4.0 and earlier) or Fedora 12 (server 3.0.0 andlater) desktop appears.


8/47

8

Step 3: Opening terminal

Select the Terminal / Command Line icon from the bottom row:The following prompt refers to console commands from now on:[root@nemoserver root]#

Step 4: Change the superuser passwordThis step is required only if the server is to be connected to the Internet.The superuser is called root in Linux. The superuser password can be changed with the passwdcommand:

[root@nemoserver root]# passwdChanging password for user root.

New UNIX password:Retype new UNIX password:

passwd: all authentication tokens updated successfully.

Create a new password according to the following guidelines: Do not use common words or names The password must be least 8 characters long The password should have upper and lower case characters, numbers, and special characters

The following is an example of a valid password (do not use this, as it is the default password forserver 2.0.1 and earlier versions):

6yV-1pSc


9/47

9

Write the password down and keep it in a safe and secure place! There is no easy way toretrieve it if it gets lost. In addition, after the root password has been changed, the server ’s superuser account can only be accessed locally or from the Internet with the password.

Please note that Anite Finland cannot guarantee absolute safety when the server isconnected to the Internet since the server has active, public services such as FTP, WWW,POP3, SMTP, RTSP, Iperf and VNC that can be or become vulnerable. However, the serverhas properly configured a firewall that should prevent all common intrusions.

Step 5: Configure LAN (optional)It is possible to edit network startup scripts directly by using the vi-editor as described in the Manualconfiguration appendix, or interfaces can be configured from the Network settings system dialog that

can be opened by first starting NSM2 by clicking on the NSM2 icon on the desktop, and furtherselecting Settings | Network Configuration in the Nemo Server Manager menu.

This step is required only if the server is to be connected to a company LAN.

Connecting the server to LAN has some great advantages. For example, the server files can beaccessed easily by using Windows file sharing (Samba service in Linux), and it can be used remotelyby using VNC (http://www.realvnc.com/ ). In addition, all external services such as SSH and FTP cannaturally be accessed also from the LAN side.

If not already connected, connect a network cable to the main board RJ-45 connector that is locatednear the display connector, and is away from the other network connectors, and labeled with LAN.Connect the other end to a company LAN switch.

In Fedora 8, or Linux generally taken, network interfaces are named as eth0 , eth1 , etc. so that the lastnumber is different for each interface. The following interfaces are installed by default: lo, eth0, eth1,eth2, eth3, eth4. Additionally, the server may have eth5-eth8.

Interface Configuration Description

lo ifcfg-lo Loop-back interface for local IP traffic

Eth0 ifcfg-eth0 LAN interface, VNC and Samba enabled

eth1 ifcfg-eth1 First WAN interface, Catra streaming service bindsto this interface

eth2 ifcfg-eth2 Second WAN interface

eth3 ifcfg-eth3 Third WAN interface

eth4 ifcfg-eth4 Fourth WAN interface

http://www.realvnc.com/http://www.realvnc.com/http://www.realvnc.com/http://www.realvnc.com/


10/47

10

Go to Settings | Network Configuration in the Nemo Server Manager menu. The following dialogopens.

Select an interface to be configured, and click on Edit . The following dialog appears.

Select Automatic (DHCP) or Static configuration. With Static configuration it is advised you write downthe network settings as obtained from ISP. Press OK when ready.The example picture shows a static configuration for eth0 (LAN).

If there is need to configure DNS, select the DNS tab and write down the domain name serveraddress(es).


11/47

11

Step 6: Configure WAN (optional)This step is required only if the server is to be connected to the Internet and if the WAN interface usesa static IP address. By default, all WAN interfaces are configured to use dynamic (DHCP) IPaddresses. In case PPPOE connection is used, see PPPOE Instructions in the APPENDICES at the

end of this manual for more information.

Note that it is recommended to use a static IP address on the WAN side so that there is no need tochange the IP address into measurement unit configurations in case of possible later changes to it.

See the previous step for how to open the network settings, and then select the WAN interface to beconfigured: eth1, eth2, eth3 or eth4 (or eth5-eth8).

Step 7: Restart configured network interfacesIf the network interface settings were changed, it is required to restart those interfaces to activate themin order for the changes to become active. It is also time to connect the WAN interface network cables.Repeat this procedure with every changed interface.

Select network interface in the Network Configuration dialog, and click on Deactivate, then Activate.

Sometimes, especially if gateway settings are changed, it is required to restart the whole networksystem. In this case it is noticed when network settings are saved. Open the terminal and type in thefollowing command:[root@nemoserver root]# service network restart

All interfaces will be shut down, after which they are restarted with new settings.

Step 8: Configure Samba workgroup (optional)The Samba service is responsible for Windows network file/folder sharing.The server’s Samba service is preconfigured to use the following workgroup name: NEMOTEST. Thisshould be changed so that it matches with the local network’s workgroup - otherwise the server’sshares will not appear on workstations.

If the workgroup name needs to be changed, give the following commands:

1. First, open the Samba configuration with vi-editor:[root@nemoserver root]# vi /etc/samba/smb.conf

2. Press Esc I to set the vi editor to insert mode.Search the line that reads workgroup: workgroup = NEMOTEST

3. Replace NEMOTEST with the correct workgroup name. Remember to use upper-case letters.

4. Find a line that reads:

hosts allow = 192.168. 127. 10.


12/47

12

In case your LAN uses a different subnet than the one defined above, add your subnet at theend of the line. For example, if your LAN uses the 72.10.x.x network, add 72.10. to the end,each subnet separated with a space character.hosts allow = 192.168. 127. 10. 72.10.

5. Press Esc : x [enter] to save the configuration and to close the vi editor.Next, restart the Samba service:[root@nemoserver root]# service smb restart

Step 9: Determining server’s IP addresses (optional) If the server is configured to use dynamic IP addresses (DHCP), it is required to check whichaddresses the server retrieved in order to access the server by using its IP address, from LAN orWAN.

If the server IP address is unknown (it was assigned automatically by DHCP), use the followingcommand to retrieve the address:[root@nemoserver root]# ifconfig eth0eth0 Link encap:Ethernet HWaddr 00:11:25:57:37:3Binet addr:192.168.10.4 Bcast:192.168.10.255 Mask:255.255.255.0 […]

The IP address is next to inet addr field, in this case 192.168.10.4 .

Repeat the procedure for each interface from eth1 to eth4 to obtain the addresses. If the interfacedoes not have an assigned IP address, the inet addr field does not appear.What is more, whenever the server reboots it may or may not get new IP addresses depending on thenetwork’s DHCP settings.

Step 10: Calibration (Audiotest PSTN Openline4 only)Since fixed lines are analogue, their electrical properties vary greatly among different operators andcountries. Therefore the PSTN card’s electrical interface has to be adjusted to match the localconditions.

However, this is required only with Openline4 card with the Dell SC440 server platform – with thenewer Dell T100/T110 and OpenPCI/OpenPCIe-card the user is only required to input country code to

NSM settings and the card then selects proper impedance settings based on the international countrycode (ICC).

Dell SC440 server

Line calibration is done by determining three values for a card’s hybrid balance registers. Thesevalues assign the interface impedances so that the impedances of the card and the line are as closeto each other as possible.

Be sure that all used phone cables are identical – otherwise the electric properties of the lines are notidentical and the balance values obtained for one test line do not necessarily work with other lines.

The Nemo Server Manager has a calibration wizard which performs the calibration but requires theuser to call one of the connected fixed lines.


13/47

13

Select menu Settings | PSTN-Line Calibration and follow the onscreen instructions.The calibration process takes some 15 minutes to complete and involves a long test call to the server.

Dell T100 and T110 servers

Start NSM and select menu item Settings | VQD-Service Configuration . Set the CountryCode toyour international country code and press Save .

Step 11: Busy-tone wizard (Audiotest PSTN only, mandatory)The PSTN line busy tone varies greatly among different operators and countries. Therefore the PSTNcard has to be tone-trained so that it can detect the situation when the line is disconnected by the

other end. Otherwise the server will keep the line open until the maximum call duration, by default 8hours, is elapsed and it cannot be called again before that.

Start Nemo Server Manager and select menu item Settings | Busy-tone Wizard . Next, follow theinstructions. The busy-tone training involves a test call to the server.

This is not required with ISDN-PRI.

Step 12: Determining gain settings (Audiotest only, optional)

As the level of analogue PSTN lines may vary greatly in different places, it might be necessary that theRX/TX gain settings be adjusted. The server analogue lines have adjustable SW and HW gains for both input (RX) and output (TX)direction. So there are a total of four gain values.

Note: VQ2 systems (VQ2/server, VQ2/audio module, VQ2/sound card) have automatic RX-level gainadjustment in both ends so this step is generally not required. Just take care that the output gain ofserver is not too high and terminal headset volume is at recommended level:

- 6630, 6680, N80 and similar terminals that have the Nokia Pop-port connector: Setthe terminal’s headset audio level to the minimum (it can be adjusted during a test

call).- VQ2/audio module with N95 or other terminals that have the 2.5/3.5mm jack plug

audio connector: set the headset level to position 4.- VQ2/sound card with N95 or other terminals that have the 2.5/3.5mm jack plug audio

connector: see details from VQ quick card and/or Nemo Outdoor manual.

If the default values do not work so that the server cannot synchronize during call tests, default valuesmay be required to be increased or decreased.


14/47


15/47

15

These settings can be changed from the Settings | VQD-Service Configuration menu and theirdefault values are:SwRxGain 0.0HwRxGain 0.0

The maximum values for both are 12.0.

Note that you should not exceed this limit!

The minimum values are 0.0.

The RX gain settings affect the signal amplitude at the server end. If the server side is not getting highenough sync power, these may need to be adjusted if autogain cannot compensate for signalweakness.

Start the Nemo Server Manager. Make a test call from Nemo Outdoor and observe the MOS value

and the Sync power. In optimal conditions (flawless network), the MOS can be as high as 3.8-4.1, andthe Sync power should be over 4000. See the picture below.

Make several measurements and if gains need to be lowered, lower SW gain first, then HW gain. Andvice versa, if gains need to be raised, raise HW gain first and then SW gain.

The procedure goes as follows:


16/47

16

1. Make a two-minute-long measurement and observe the average Sync power from the serverside.

2. Lower the HW RX gain setting by 1.0 and make a test call.3. Measure with the server and observe for a couple of minutes.4. If the average sync power is lower than earlier, go to position 5, if better go to position 2.

5. Increase the HW RX gain setting by 1.0 and make a test call.6. Measure with the server and observe for a couple of minutes.7. If the average sync power is lower than earlier, set gains to previous values.

NEMO SERVER MANAGERWith the Nemo Server Manager it is possible to observe VQ MOS and data transfer rates andconnections in real time as well as to set all voice quality service settings.

The Nemo Server Manager can be started from the following taskbar icon:

Voice Quality monitor

With the VQ monitor it is possible to see the status of each PSTN line or ISDN timeslot together with

graphical MOS history instantly. It displays also the used test sample name, line- and remote numbersand level of received sync signal.


17/47

17

Note: While with PSTN a line always equals certain channel, instead with ISDN-PRI there aretimeslots that are allocated as calls come in. Therefore, an incoming call may appear in any timeslotbefore the caller number is detected. After the caller number is detected, it is compared to all channelsand timeslot will be reassigned to a channel that has an open measurement file and has been calledearlier from the same number. Alternatively, if there is no open measurement file that matches caller

number, a channel that has identical callback number configured will be used.

If one wants to use certain settings like test sample for a certain caller number, the callback numberhas to be configured even if callback is not actually used. Moreover, the caller number has to beforced to be always visible from the test terminal settings, otherwise the channel assigning will notwork properly and all calls will create a new measurement file.

In short: Set all numbers that call the server into separate channel CallbackNumbers. If anycaller number is missing results will be un-expectable and system most probably won’t workproperly.

TCP/IP monitor

With the TCP/IP monitor it is possible to instantly see the status of all data connections establishedwith the server.


18/47

18

Each line describes one inbound socket connection such as an FTP or a WWW test connection.Displayed are uplink and downlink rates and total bytes, used protocol, and source/destination IP-addresses and -ports. When a socket connection is closed, the line disappears after a while.

Log monitor


19/47

19

With the VQD service log monitor it is possible to watch the operation of the voiceqd service in realtime. All log lines are displayed by default, and one can also filter out the information from somechannels to improve readability. In addition, it is possible to stop the updating.

NSM menuThe main menu of Nemo Server Manager looks as below.

The menu item Change ping IP Address : can be used for changing the external host IP that theserver pings once every ten seconds. This feature is useful in determining if the server’s I nternet orLAN connection is alive.

Enter an IP address of external host to be pinged and select Save . The status line at the bottom of themain screen shows the result of a live ping:

The example shows that the ping check was successful with host nemo.planeetta.com , and that theping delay was 13.726ms.


20/47

20

The menu item Export measurement files can be used to export server’s measurement files intoUSB stick or into a local e-mail account. Measurement files will be packed into a single .zip file.

Source file directory

This defines the folder where the exporting function searches for measurement files. The number offound files is displayed right below the setting. In this example there were no files.

Export target

This defines the target where measurement files will be exported. Available choices are E-mail and /media/usbdisk . The latter choice becomes available only when there is an USB disk connected intoone USB ports of the server.

Local e-mail address

This setting is enabled only when the export target is set to E-mail . It defines the local e-mail accountwhere the measurement zip file will be sent. The zip file can later be fetched externally by using POP3if the server is connected to the Internet. Note that the account must exist.

Automatic export

This setting disables or enables the automatic measurement file exporting once per daily, weekly or

monthly basis. The exporting happens during midnight at the selected interval.

Post-processing

This setting defines the action what to do for the source measurement files – choices are archive ordelete. The former archives (moves) exported files to another local folder, that is defined with settingArchive to folder , and the latter deletes local source files every time exporting takes place.

When the settings are ready, press Export now and the found measurement files will zipped andexported as configured. Note that the button is disabled if there are no found measurement files, as inthe example picture.


21/47

21

Settings menuThis is the Settings menu of Nemo Server Manager:

The menu item PSTN Line Calibration can be used to calibrate the server with local analogue PSTNlines. Select the menu item and follow the onscreen instructions. The calibration requires the user tomake a test call to the server number. Note also that the calibration requires that the VQ service is

stopped.

Voiceqd-service settings can be changed from the Nemo Server Manager by selecting menu Settings| VQD-Service Configuration .

The Configuration dialog has two tabs: Global Parameters and Channel Parameters . The formersettings affect the service and all channels; the latter contains channel-specific settings.


22/47

22

Global Parameters

ResultsDir default: /home/nemotest/results/ This setting is provided only for backward compatibility, and defined in Channel Parameters.This is the directory where measurement files will be stored by default if no channel-specificResultsDir-setting is defined. Note that the directory must exist.Each call generates a new file except if a new call arrives in 120 seconds after last disconnection, in

which case events of new call go to the earlier file.

ReceivedDir default: /home/nemotest/samples/ This setting is provided only for backward compatibility, and defined in Channel Parameters.This is the directory where the received samples will be stored. Note that the directory must exist.

ReferenceSampleDir default: /usr/vqd/test_samples This is the directory from where the service auto-loads reference test samples (max 9).

FileformatMode default: 1.88The file format version that service writes to its measurement files.

SaveSamples default: OFFEnables or disables received sample saving globally for all channels.


23/47

23

SaveThreshold default: 4.5This setting defines the sample saving threshold: only samples with lower score than the threshold willbe saved.

Latitude default: 64.932724Longitude default: 25.384432These are the server coordinates in decimal format for post-processing tools. These appear on everymeasurement file line that the server generates. The coordinate validity is not checked at all!

SwTxGain default: 0.0HwTxGain default: 6.0SwRxGain default: 0.0HwRxGain default: 0.0These are the server’s default software and hardware gain settings. The maximum is 12.0, seechapter Installation, Step 11 for details on how to determine these. Usually it is not required to adjustthese settings.

FileCloseTimeout default: 200This setting determines the delay for how soon each channel’s measurement file will be closed if thereare no further incoming calls or callbacks to that line. The unit is displayed in seconds.

ForceSample default: noneThis setting forces a certain test sample for all channels. Overrides channel-specific sample setting.Note: It is highly recommended to use global sample forcing as the automatic sample detectionis not reliable in bad conditions.

MaxCallDuration default: 480This setting determines the maximum duration that a test call can last in minutes. Due to certaininaccuracies with analogue PSTN lines, the server’s PSTN ca rd cannot determine whether the line isclosed or not with 100% accuracy. Sometimes, very rarely, the line may be left to a state that does notgive the busy tone to the server direction but is in fact disconnected. Therefore the server would keepthe line open indefinitely in this situation. This feature grants that the line will be closed after eighthours at least to avoid server rebooting.

CountryCode default: 358This setting defines the international country code (ICC) that is used by Dell T100/T110 servers and

OpenPCI/OpenPRI- and OpenPCIe/OpenPRIe-cards for line impedance determination. Not used bythe older Dell SC440 server.


24/47

24

Channel Parameters

There are ten tabs, one for each channel. Note that if the server has only one PSTN card, only theCh0-3 settings are valid.

The Channel Parameters contains call-back call related settings that allow the server to make a call-back call after each received call to make it possible to conduct alternating mobileoriginating/terminating testing with two-directional voice quality. In addition, it contains settings thatallow the measurement results/samples to be written into a different folder for each channel.Note that CallbackNumber is also used for caller-channel association in ISDN system.

Callback default: OFFEnable or disable the callback for a channel. Channel numbers are assigned so that port0 of the uppercard is channel 0, and port0 of the lower card (if installed) is channel 4.

CallbackDelay delay_in_secondsThe time in seconds for how long the server waits from disconnection before it calls back.

CallbackDuration call_duration_in_seconds

The time in seconds for how long the call-back call lasts.


25/47

25

CallbackNumber phone_numberThe number to where the server initiates the call-back call from this channel. This number alsoassociates the caller number with certain channel in ISDN-PRI system.

LineNumber phone_number

The line's phone number – this is required if the uplink and downlink measurement files will be joinedin post-processing and it can be also used to remember which line number is connected to each port.

PlayMode default: OFFIf a channel is in this mode it will automatically answer a received call. It plays the configured samplefor the line until the caller ends the call. This mode is also used for Handy/Wanderer downlink-Pesqtesting: Set Playmode on and select some of available handy test samples to PlayModeSample.

PlayModeSample sample_name_with_absolute_pathThis is a test sample that a channel plays for the line in PlayMode.

TestSample sample_name_with_absolute_pathIf defined, this forces a channel to use a defined sample during voice quality testing. It does not affectthe PlayMode. Note: Because the automatic sample detection can be unreliable it is recommended toset this to the used test sample to make testing more accurate or use the global ForceSample.

ResultsDir absolute_pathThe folder where a channel’s measurement files will be created. Note that the directory must exist.Each call generates a new file except if a new call arrives in 120 seconds after the last disconnection,in which case events of a new call go to the earlier file.

ReceivedDir absolute_pathThis is the folder where a channel’s received samples will be stored . Note that the directory must exist.

FilenamePrefix filename_prefixThis describes a filename prefix that will be added to the beginning of a filename of all channels ’ generated measurement files. Do not use any other than valid filename characters.

ReceivedDuration default: 0If bigger than zero, determines the duration of received test calls for the channel. Affects both voicequality and PlayMode test calls.

NEMO FILE MANAGERFrom server version 2.3.0 on the server has preinstalled Nemo File Manager that is run on Wineenvironment. The File Manager icon is located on the desktop and it has to be run manually after eachreboot.

By default, the File Manager has only one rule: Convert all files under /home/auto/* folder andsubfolders into /home/nemotest/outgoing folder. After conversion original files are archived into folder

/usr/archive and new zip file is created every day. For further details how to configure and use FileManager please refer to its manual.


26/47

26


27/47

27

ADMINISTRATION

Once it is set up, the server is administration free when it comes to server settings and the like. Theonly situation where administration may be required is if the hard disk becomes full. By default, the

server has more than 60GB of free disk space, but it may run out of it in a couple of years, especially ifsample saving is used. If this happens, open the server Samba share and remove/delete obsoletemeasurement files.

Samba/Windows file sharingOnce the server is connected to LAN, it is possible to browse into it and access its files by usingWindows file sharing.

If the server’s LAN IP address is 192.168.10.4 , run the following command: \\192.168.10.4

It should open a file window that contains the server’s shared folders.

Instead, if Windows asks for a password, close the password prompt and run the following command:net use \\192.168.10.4 7UcW49kq /USER:nemotest

And after the command is completed try again the command \\192.168.10.4

By default the server has the following shared folders:

Share name Real folder Description

auto /home/auto The root folder of Nemo Autonomous.

movies /usr/local/movies Catra streaming service video folder.

nemotest /home/nemotest The root folder of generic test account ‘nemotest’.

VNC and Remote DesktopWith Fedora 12 the VNC service was dropped out and instead there is system Remote Desktopfunctionality available into LAN. However, the new RD is protocol-wise compliant with VNC and notwith Windows’ Remote Desktop so VNC Viewer is required to access the server.

The VNC service is disabled to WAN interfaces from server version 2.0.1 onwards due to securityrisks, and VNC service and Remote Desktop ports are open only to LAN interface from the firewall.

Server versions before 3.0.0 (Dell SC440 and Dell T100)

In case VNC service is needed for LAN access, open console as root and run command:[root@nemoserver root]# vncpasswd

Feed new VNC password and then run the following command to start the VNC service manually:[root@nemoserver root]# vncserver &


28/47

28

Note that the service has to be restarted manually after each reboot.

Server versions 3.2.0 and later (Dell T110)

By default the RD is active to LAN. It can be connected by using VNC Viewer and connecting simplyto LAN IP address without screen number. The default password is: nemonemo

To change this select menu System | Preferences | Remote Desktop

The Remote Desktop can be disabled by unchecking the topmost setting. It is recommended tochange the default password to something more secure if feature is used.


29/47

29

DATA -TESTING

The server has multiple test pages and files for data testing. It is also possible to add more of them byplacing them into the correct directory.

WWWThe WWW test pages are located in the /var/www/html folder.

HTML test pages: 500B.html 1kB.html 2kB.html 5kB.html 10kB.html 20kB.html 50kB.html 100kB.html200kB.html 500kB.html 1000kB.html .

These files can be accessed via any server’s public IP address, i.e.http://server.public.ip.address/500kB.html.

If the filename is omitte d, the server’s main page opens (see page 35) . The main page displays whichtest files are available, and also the server’s IP addresses are listed. The pag e is refreshed once everyfive minutes.

FTPFTP test files are located in the /home/nemotest folder. This folder is also accessible through Sambafile sharing.

The server contains the following FTP test files. Compressible .txt files have redundant content sothey will compress well where .bin files are not compressible.

Compressible FTP test files: 100kB.txt 200kB.txt 300kB.txt 500kB.txt 1000kB.txt 5000kB.txt10000kB.txt 50000kB.txt 100000kB.txt .

Random FTP test files: 100kB.bin 200kB.bin 300kB.bin 500kB.bin 1000kB.bin 5000kB.bin10000kB.bin 50000kB.bin 100000kB.bin .

Use the following account:FTP login / password: nemotest / 7UcW49kqIt is also possible (but not recommended) to use other accounts (except root) listed this section. Notethat the ‘fleetmanager’ account is reserved for Nemo Fleet Manager -application, and the ‘l337’account is for Nemo Autonomous field units.

E-MailThere are no predefined test e-mails. Instead, it is required that the user upload a test e-mail withSMTP, and read it with POP3.Use the following accounts:SMTP / POP3 server: Any of the server’s public domain names.

SMTP login / password: both emptySMTP From: [email protected]


30/47

30

SMTP To: nemotestPOP3 login / password: nemotest / 7UcW49kq

Note : The server requires a domain name for at least one WAN interface IP address that is going tobe used on SMTP testing - otherwise the server does not accept the inbound SMTP connection. This

security mechanism has been recently added due to continually increasing e-mail fraudulency andspamming.

After the server is connected to the Internet (WAN) and has public domain name, the user has torun the following commands as the root-user to set the domain name permanently to SMTP-serviceconfiguration:[root@nemoserver root]# postconf -e myhostname=nemoserver.nemo.fi[root@nemoserver root]# service postfix restart

Where nemoserver.nemo.fi is replaced with the user's own domain name.

Note : Some operators prevent accessing other SMTP services than their own - therefore it is notpossible to test SMTP against the server with these operators' SIM cards.

RTSPThe server has the Catra Streaming service running, and it is bound automatically with interface eth1.Thus, make sure that there is only one WAN/Internet connection that is connected to the uppernetwork cards’ port A. The RTSP service can be accessed only by using an eth1 IP address, forexample, if the eth1 IP address is 62.142.xx.yy , then the file 6.3gp can loaded by typing this addresson a mobile browser: RTSP://62.142.xx.yy/6.3gp

RTSP test videos are located in the /usr/local/movies folder. This folder is also accessible throughSamba file sharing so it is easy to add more test videos.

The server contains the following test videos (videos are downloaded from the Catra WWW-sitehttp://www.catrasoftware.it/Streaming/CatraStreamingServer.htm) :

Filename File size Original filename

6.3gp 2819 kB 06_H263_BR_48000_FR_3_AAC_BR_16000_VID_Trailer1.3gp

7.3gp 2718 kB 07_H263_BR_48000_FR_3_GSMAMR_BR_16000_VID_Trailer1.3gp

8.2gp 2893 kB 08_H263_BR_48000_FR_3_WBAMR_BR_16000_VID_Trailer1.3gp

9.3gp 2930 kB 09_MP4_BR_48000_FR_3_AAC_BR_16000_VID_Trailer1.3gp

10.3gp 2130 kB 10_MP4_BR_48000_FR_3_AMR_BR_16000_VID_Trailer1.3gp

11.3gp 3003 kB 11_MP4_BR_48000_FR_3_WBAMR_BR_16000_VID_Trailer1.3gp

12.3gp 2647 kB 12_MP4_BR_42000_FR_8_3_GSMAMR_BR_8000_VID_TomJerry.3gp

Note : Nemo Outdoor cannot establish streaming with the Nemo Server Catra streaming service. With

Nemo Handy the streaming is OK with the included test files.

http://www.catrasoftware.it/Streaming/CatraStreamingServer.htmhttp://www.catrasoftware.it/Streaming/CatraStreamingServer.htm


31/47

31

IPERFThe server has two Iperf services running at port 5001, one in UDP and other in TCP-mode. Servicesare available via all connected network interfaces. Iperf-service is very useful, for example, on UDPmaximum throughput testing.

Note: When configuring multi-data Iperf-tests with Nemo Outdoor, USE THE SAME IPADDRESS FOR EACH TERMINAL. This differs from normal data testing (www, FTP, etc.)because those have to be configured to use different IP addresses.

Note: It is not recommended to run Iperf test transfers while doing simultaneous voicequality tests as the Iperf consumes most of the available processing power making VQtesting inaccurate that may and will lower average scores.


32/47

32

APPENDICES Server users and passwords

Username Password Type Home Description

root v2.0.1: 6yV-1pScv2.1.0 and later:-2eF6aX7

SSH /root Super-user account

nemotest 7UcW49kq FTP /home/nemotest General test account: FTP test files

fleetmanager flee7m4n FTP /home/auto Fleet Manager account

l337 l337 FTP /home/l337 Wanderer auto-login account

Measurement Guidelines

Server measurement filesThe server generates a new measurement file for each line when a test call arrives, and the file isclosed (i.e. footer is written to it) in two minutes unless another call comes in before that. The server-side measurement files have the same file format as the Nemo Outdoor measurement files.Measurement files are located in the /home/nemotest/results folder.Within ISDN system there is no specific channels but dynamically allocated timeslots. Therefore thecaller id is associated with certain channel by using channel’s CallbackNumbe r setting. If it is setcorrectly, all calls from certain number go to the same measurement file (with FileCloseTimeoutconsidered).

File-format mode 1.88Each file is named using the following naming convention:aaBbbcc ddeeff .dt n where aa is year, Bbb is a three-letter month abbreviation, cc is the day of themonth, dd is the hour in the 24-hour format, ee is minutes, ff is seconds, and n is the called linenumber beginning from 1 (note that in NSM channel numbers begin from zero).The following is an example, 05Apr21 173345.dt1 - this file was generated on April 21 st 2005 at17:33:45 from line 1.

File-format mode 2.xThe naming convention is as follows:

aaBbbcc ddeeff .n .nmf where aa is year, Bbb is a three-letter month abbreviation, cc is the day of themonth, dd is the hour in the 24-hour format, ee is minutes, ff is seconds, and n is the called linenumber beginning from 1 (note that in NSM channel numbers begin from zero).The following is an example, 05Apr21 173345.1.nmf - this file was generated on April 21 st 2005 at17:33:45 from line 1.

Measurement files can be fetched from the server by using FTP with the following username:nemotest , and the following password: 7UcW49kq

After login, change to folder results and download measurement files. Do not try to delete files that arecurrently active, that is, when a test call is still on.


33/47

33

Test Terminal Configurationa) Make a test call and adjust the terminal headset volume to minimum (or to level 4 with N95

and other ‘2.5/3.5mm jack plug’ headset connec ted terminals).b) Switch off alert and warning tones. Beeping during a measurement will lower the score.

Nemo Outdoor Configurationa) Set Nemo Outdoor Voice Quality test mode to Half Duplex Start TX (Outdoor 4 only, Outdoor

5 determines test mode automatically).b) Select one of the default test samples: 3s.wav , 4s.wav , 4s_m.wav , 5s.wav , 6s.wav ,

6s_m.wav , 6s_f.wav , 8s.wav , 10s.wav .

When Nemo Outdoor calls the fixed line connected to the server, the server answers the call andrecords 1.5 seconds of incoming audio. Next, it compares the recorded snapshot and chooses thebest matching sample from the default samples. However, if ForceSample or TestSample is

configured, voiceqd skips the auto-detection and uses the configured sample directly. After the identification, the server sends the identified, non-degraded sample to Nemo Outdoor whichrecords it and calculates the PESQ score.

Along with test samples, one can hear short beeps between samples: those are used forsynchronization purposes and do not affect the PESQ score because they are eliminated before thecalculation. Next, Nemo Outdoor sends the sample again to the server and since this time the serveralready knows the sample (if it was auto-detected), it records for the duration of the identified sampleand calculates the score, opens a measurement file and stores the result there. The file is closed aftertwo minutes if the line is dropped and no new call is made.

This testing keeps alternating until Nemo Outdoor drops the call or the ReceivedDuration time iselapsed (in the case it is configured).It is recommended to set the time between calls parameter to atleast 5s to Nemo Outdoor so that there is enough time for the server to detect the line busy-tone(PSTN only, with ISDN signaling handles call events immediately).

Call-back exampleThe following Nemo Outdoor script example allows alternating call-testing, i.e. mobile-originatingfollowed by mobile-terminating call, with voice quality measurements.

Nemo Outdoor first calls the server, and the test call lasts for 90 seconds. Next, there is a 30-secondidle period on both sides, after which the server calls Outdoor, the call lasting for 90s. Next, there is a30-second idle period again, after which the script starts from the beginning if the script repeat isbigger than 1.

The following is a script file from Nemo Outdoor 4.16.26 (from RC2) and later versions:

* Nemo Prime script fileRepeat : 5Device Settings : 0

VoiceCallStart : NUM=081234567,VQE=1,VQM=4,PFX=1,RSF=4s.wav,TMO=90,MRK=0,ATT=30,SYS=-2097153,CTY=0

VoiceCallStop

Wait : DEL=50,SEL=2,NOT=Incoming Call,ATM=60 Wait : DEL=120,SEL=0,NOT=,ATM=300


34/47

34

Set the following to the server’s C hannel Parameters of used channel:

Callback ONCallbackDelay 10000CallbackDuration 90000CallbackNumber 0102345678

LineNumber 081234567

It is assumed here that the server’s line 0 number is 081234567 , and the terminal’s number callingthat line is 0102345678 .

Note that since the call duration in CAD event is the time from CAA to CAD including signaling time,and call script call duration calculation starts from the call connection, the call duration in CAD eventsis usually some 5-10s longer than the Call duration value defined in a script.

In addition, if more precise timing is needed, the only way to sharpen it is to make some test

measurements and observe the call duration from the CAD event. Increase/decrease Call duration from the Outdoor script and the server’s Channel Parameters as needed until the observed callduration is acceptable.


35/47

35

The server’s main WWW page

PPPOE InstructionsOpen the root console and run the following command:[root@nemoserver root]# adsl-setup

The command runs the ADSL/VDSL/xDSL configuration script that asks several questions about thenew connection. After the script is done, a new network configuration script is created to:

/etc/sysconfig/network-scripts/ifcfg-ppp0 PPPOE settings can be edited, if necessary, but this is usually not required if the entered informationwas correct:[root@nemoserver root]# cd /etc/sysconfig/network-scripts


36/47

36

[root@nemoserver root]# vi ifcfg-ppp0

Press Esc i to set the vi editor to insert mode.Note that all vi editor commands are case sensitive.Press Esc : x [enter] to save the crontab and to close the vi editor.

After the PPPOE script is ready, the connection can be started with the following command:[root@nemoserver root]# pppoe-start

Verify that the new connection received an IP address with the following command:[root@nemoserver root]# ifconfig ppp0

If the inet addr field is present, the connection should be OK. In failure situations use the followingcommand to get more information about PPPOE:[root@nemoserver root]# man pppoe

PPPOE can be set to start automatically when the server boots:[root@nemoserver root]# vi /etc/rc.d/rc.local

Add the following line just below the lowest commented line:pppoe-start

The beginning of the file should look as follows:#!/bin/sh## This script will be executed *after* all the other init scripts.

# You can put your own initialization stuff in here if you don't# want to do the full Sys V style init stuff.

pppoe-start

Manual configurationNote that all voice quality service configurations can be made from Nemo Server Manager. Thischapter is provided for backward compatibility. These instructions continue from the Installation chapter, Step 4.

Step 5: Configure LAN (optional)

Each of the server’s interfaces has a separate start-up script and these scripts are located in thefollowing folder: /etc/sysconfig/network-scripts/ and are named as follows: Script for eth0 is ifcfg-eth0 ,script for eth1 is ifcfg-eth1 , and so on.

By editing these scripts it is possible to switch between DCHP and manually assigned IP addresses.Note that it is recommended to use a static IP address on the LAN-side so that there is no need tochange the IP address if it changes later.

Change the interface eth0 settings with the following command:[root@nemoserver root]# cd /etc/sysconfig/network-scripts[root@nemoserver root]# vi ifcfg-eth0


37/47

37

Now the vi editor opens. By default the configuration uses a static IP and shows:DEVICE=eth0ONBOOT=yes

# Comment EITHER of these sections

# Static IPBOOTPROTO=staticIPADDR=192.168.10.4

NETMASK=255.255.255.0GATEWAY=192.168.10.1

# Dynamic IP#BOOTPROTO=dhcp

Press Esc I to set the vi editor to insert mode.Note that all vi editor commands are case sensitive.Change the configuration to the dynamic IP by commenting the Static section with the hash character(#), and uncommenting the Dynamic section by removing # from the BOOTPROTO=dhcp item:

DEVICE=eth0ONBOOT=yes


# Static IP#BOOTPROTO=static#IPADDR=192.168.10.4#NETMASK=255.255.255.0#GATEWAY=192.168.10.1

# Dynamic IPBOOTPROTO=dhcp

Note that the following parameters, IPADDR, NETMASK, GATEWAY, and BROADCAST, are suppliedby ISP, and BROADCAST is optional.Press Esc : x [enter] to save the script and to close the vi editor.

Step 6: Configure WAN (optional)In this example, eth1 is configured. When configuring other WAN interfaces replace eth1 with eth2,eth3 or eth4 (or eth5-eth8).

Change the interface eth1 settings with the following command:[root@nemoserver root]# cd /etc/sysconfig/network-scripts[root@nemoserver root]# vi ifcfg-eth1

The vi editor opens. By default the configuration uses a dynamic IP and the following is displayed:

DEVICE=eth1ONBOOT=yes



38/47

38

# Static IP#BOOTPROTO=static#IPADDR=#NETMASK=#GATEWAY=

# Dynamic IPBOOTPROTO=dhcp

Press Esc i . to set the vi editor to insert mode. Note that all vi editor commands are case sensitive.Change the configuration to a static IP by removing the hash character (#) from the static section, thusun-commenting it, and commenting the dynamic section by adding # next to it.Note that the following parameters, IPADDR, NETMASK, GATEWAY, and BROADCAST, are suppliedby ISP, and that BROADCAST is optional.Press Esc : x [enter] to save the script and to close the vi editor.

Step 7: Restart configured network interfacesIf network interface settings were changed, it is sometimes required to restart those interfaces toactivate it in order for the changes to become active. It is also time to connect the WAN interfacenetwork cables.

Open terminal and write command:[root@nemoserver root]# service network restart

All interfaces will be shutdown and then they are restarted with new settings.

Updating Instructions

Server image updatingNote that the server update erases all files that are currently on your PC’s hard-disk! Backup allmeasurement data before continuing with the update.

1. Shut down the server, open the chassis and remove all OpenPCI/OpenPRI and 4xEthernetcards.

2. Start the server and press F11 as soon as the BIOS POST screen appears. Press Ctrl-Alt-Delto reset if you were not fast enough and Linux already started.

3. Insert server image DVD.

4. Select CD/DVD for boot device, after which Debian Isolinux should appear on the screen. After a while there will be a question whether to continue with hard-disk overwriting. Answer y to continue. Image writing will take almost 2 hours.

5. After the writing is finished, take the DVD out and press the power button some seconds topower the server off.


39/47

39

6. After that boot the server once without any card installed. After the logon screen appears,select Shutdown . Now the integrated Ethernet-device has been mapped to device eth0 .

7. Now install the 4xEthernet card (if the server has a Datatest option) into second lowest PCI orPCI-E slot and start the server. After the login screen appears, select Shutdown . Now the

4XEthernet card is mapped to devices eth1 -eth4 .

8. If the server has another 4xEthernet-card, install it to top of earlier card, then boot to loginscreen and shutdown.

9. Next, install the OpenPCI/OpenPRI- or OpenPCIe/OpenPRIe-card and reboot. PCI cards goto lowest PCI slot and PCI-E cards to the lowest PCI-E slot.

10. The server is in its initial condition after the login-screen appears, and the busy-tone wizardshould be run and correct CountryCode entered (required only with Nemo Audiotest Server).

After these the server is ready for use.

File Manager updating

1. Put the latest File Manager setup to USB memory and connect it to the server. The servershould detect it automatically and its root folder should open.

2. If File Manager is running, stop it.

3. Select the setup file and double-click it to run it. The setup will now install the new File

Manager over the existing setup.


40/47

40

APPENDIX 1

NEMO SERVER AUDIO OPTION (VOICE QUALITY)Product Code Product Name Configuration

100035-03-110 Nemo Audio Server (4 x

PSTN lines)

1 x server based on Dell PowerEdge T110

English Docs with Euro Power Cord

PE T110 Server Tower Chassis

FP/BL - Euro - 17in Black Flat Panel

Dell Black 2 Button USB Scroll Optical Mouse

US/Euro (QWERTY) Quietkey USB Black Keyboard

PE T110 Electronic System Documentation and OpenManage DVD

C1 Cabled MST No Raid with On-board SATA Controller, Min. 1 Max. 4 SATA Only

1Yr Basic Warranty

Fedora Core 12 operating system (499046-02)

Including:

o Comes with preinstalled NSM (Nemo Server Manager) application

(310002-01)

o Nemo Server Image v3.1 (416000-31)

o PESQ licence SW, up to 4 PSTN lines (319000-00)

o Voicetronix PSTN card OpenPCIe with 8 x RJ11 connectors (499016-05)

o Voicetronix Splitter Box with 4 x RJ11 + 1 x RJ45 connectors. Converts

one RJ45 interface to four RJ11 connections. Includes RJ45 cable

(499016-03)

o

4 x RJ11 Line cables for PSTN card, Modular cable 2xplug 6/4 5mo (420039-00 )

o 1 x Data Cable 5E S-FTP 5m (420040-00)

o Nemo Server USB Copy Protection Key (499003-00)

100035-03 Nemo Audio Server

Expansion

Additional 4 PSTN lines:

o Voicetronix Splitter Box with 4 x RJ11 + 1 x RJ45 connectors. Converts

one RJ45 interface to four RJ11 connections. RJ45 cable included

(499016-03)

o 4 x Line cables for PSTN card, Modular cable 2xplug 6/4 5m (420039-00)

o Additional PESQ licence (319000-00)

100035-04-110 Nemo Audio Server ISDN

PRI (10 x ISDN lines)








C1 Cabled MST No Raid with On-board SATA Controller, Min. 1 Max. 4 SATA Only

1Yr Basic Warranty


Nemo Server Image v3.1 (416000-31)

Including:


(310002-01)

o 2 x PESQ licence SW, up to 10 ISDN lines (319000-00)


41/47

41

o Voicetronix OpenPRIe Single PCI card. 1 x E1/ T1 span. Primary rate

E1/T1 ISDN lines (499016-06)

o Nemo Server USB Copy Protection Key (499003-00)

NEMO SERVER DATA TEST OPTIONProduct Code Product Name Configuration

100270-02-110 Nemo Data Server

1 x Intel PRO/1000 PT

Quad Port Server Adapter

PCI Express Card








C1 Cabled MST No Raid with On-board SATA Controller, Min. 1 Max. 4 SATA

Only

1Yr Basic Warranty



Datatest server HW with 4 port network card (IP Addresses)

Including:


(310002-01)

o 1 x Intel PRO/1000 PT Quad Port Server Adapter PCI Express Card

EXPI9404PTBLK (499047-00)

o 5 x Data Cable 5E S-FTP 5m (420040-00)

NEMO SERVER AUDIO& DATA TEST OPTIONProduct Code Product Name Configuration

100270-03-110 Nemo Audio & Data Server

with

ISDN PRI card (10 x ISDN

lines) and 1 x IntelPRO/1000 PT Quad Port

Server Adapter PCI

Express Card




FP/BL - Euro - 17in Black Flat Panel Dell Black 2 Button USB Scroll Optical Mouse



C1 Cabled MST No Raid with On-board SATA Controller, Min. 1 Max. 4 SATA

Only

1Yr Basic Warranty



Datatest server HW with 4 port network card (IP Addresses)

Including:


(310002-01)


42/47


43/47

43

APPENDIX 2

NEMO SERVER NETWORKING

Static Public Address

Dynamic public address

Private addresses (RFC 1918)

Private address spaces (reserved addresses):

10.0.0.0 – 10.255.255.255 172.16.0.0 -172.31.255.255 192.168.0.0 - 192.168.255.255

No route from the Internet!Internal use only!


44/47

44

Static NAT (destination NAT)

Basic NAT. No port mapping Virtual Public IP is translated to private IP addresses What is my public IP?

With virtual interfaces we can map multiple public address to one private. (Nemorver)

Static NAT and PAT

PAT = Port address translation

With portmapping we can map one pubic address to many private servers


45/47

45

Dynamic NATMultible private addresses

Portmapping

Common ISP setup for homes

Access from internet need still static configuration

Debugging What is my ip? http://whatismyip.com iptstate - A top-like display of IP Tables state table entries

tcpdump - dump traffic on a network

route –n display routing table and default Gateway

Ifconfig (-all) display interface configuration

netstat - Print network connections, routing tables, etc.

http://whatismyip.com/http://whatismyip.com/http://whatismyip.com/http://whatismyip.com/


46/47

46

Static NAT (port forwarding) example withBuffalo access point


47/47

47

INDEX

4

4xEthernet card, 36

A

audio testing, 5

C

calibration, 13

call-back script, 31

Change ping IP Address, 19

Channel Parameters, 24

company LAN, 9console commands, 8

D

data-testing, 5

Debian Isolinux, 36

F

Fedora core, 7, 9

N

Nemo Server Manager, 12, 21

Nemo Server Manager menu, 19

O

OpenPCI card, 37

P

PSTN lines, 13

PSTN-card, 12

R

RJ-11 connectors, 6

RJ-45 connector, 9

root, 7

S

Samba file sharing, 26

samba service, 11

Server image, 36

Server update, 36

SW and HW gains, 13

T

TCP/IP monitor, 17, 19

terminal/command line icon, 8

V

voiceqd service settings, 21

VQ monitor, 16

W

Windows file sharing, 26

Nemo_Server_Manual_v1.pdf

Documents

Transcript of Nemo_Server_Manual_v1.pdf