SP201 I&M: Configuration of SS7 Protocols

Chapter 4

Configuration ofSS7 Protocols

his chapter provides instructions for configuring the SS7 protocols (ANSI SS7 and ITU C7) in the SP201. Use the sections that apply to your SP201’s setup. Before configuring the protocols for your SP201,

be sure you have completed all the configuration procedures in Chapter 2, Configuration Overview.

This chapter contains the following information:

• Section 4.1, Signaling System 7 in the SP201, provides a brief summary of SS7 as implemented in the SP201.

• Section 4.2, Commands for Configuring Signaling System 7 Protocols, lists the commands for configuring the protocols discussed in this chapter.

• Section 4.3, Configuring Signaling System 7 Protocols, provides procedures for configuring the SS7 protocols in the SP201.

You may also wish to review Section 6.2, Configuring Non-System-Level Commands Used by More Than One Protocol, for additional SS7 parameters to configure.

T

SignalPath™ 201 Customization and Maintenance Guide

4-2 Chapter 4: Configuration of SS7 Protocols

4.1 Signaling System 7 in the SP201

Signaling System 7 (SS7), an out-of-band signaling protocol, includes ANSI SS7 (used in North America), and ITU C7 and its variants (used in most of the rest of the world).1 (The SP201 software sometimes uses the term “ANSI” to refer to ANSI SS7 and sometimes uses the term “ITU” to refer to ITU C7 and its variants.)

The SS7 protocols implemented in the SP201 conform to the following standards:

• ANSI SS7 conforms to Bellcore TR-NWT-00246 and to ANSI T1.111a, T1.112, T1.113a, T1.114, T1.116, and T1.234–T1.236.

• ITU C7 conforms to ITU-T Recommendations Q.763, Q.767, Q.701–Q.704, Q.705, Q.708, Q.709, Q.780–Q.782, Q.784, and Q.788. (Variants of ITU C7 also conform to applicable national and local recommendations.)

The SP201 supports ANSI SS7, ITU C7, ETSI ISUP, Spanish ISUP, and Brazilian ISUP.

Note: The ports for ANSI SS7 or ITU C7 trunks depend on the software in the SP201:

• In CAS to SS7 protocol-conversion software, the SS7 protocol is on trunks 5–8.

• In ANSI SS7 to ITU C7 protocol-conversion software, the ANSI SS7 protocol is on trunks 1–4, and the ITU C7 protocol (or an ISUP variant) is on trunks 5–8.

• In SS7 to ISDN protocol-conversion software, the SS7 protocol is on trunks 1–4.

To verify the ports for SS7 trunks, use the show trunks command, described in Section 9.2.11.23, The show trunks Command.

1. In this document, “SS7” stands for all versions of the Signaling System 7 protocol. “ANSI SS7” represents the version used in North America, and “C7” or “ITU C7” represents the ITU version and its variants, used in most of the rest of the world.


Commands for Configuring Signaling System 7 Protocols 4-3

4.2 Commands for Configuring Signaling System 7 Protocols

Table 4-1 lists the commands used to configure the SS7 protocols.

Note: For commands to configure the common parameters in the SP201 or commands to configure other protocols, see the following:

• Section 2.3, System Configuration

• Section 3.2, Commands for Configuring Channel-Associated Signaling Protocols

• Section 5.2, Commands for Configuring ISDN Protocols

• Section 6.1, Non-System-Level Commands Used by More Than One Protocol

• Section 7.1, Commands for Mapping Timeslots and CICs

Table 4-1. SS7 Protocol Configuration Commands (1 of 2)

Command Name Protocol Description

config link ITU C7, ANSI SS7

(Used only in CAS to SS7 software) Configures the SS7 signaling link. See Section 4.3.1, The config link Command.

config network

ANSI SS7, ITU C7

(Not used in CAS to SS7 software) Configures the SP201 with network parameters. See Section 4.3.2, The SP201’s config network Command.

config sp200 all CAS; ANSI SS7 to ITU C7

Configures parameters that apply to all DS0s on the SP201. On systems using CAS protocols, sets the conditions for sending circuit reset (RESCIR) messages. For ANSI SS7 to ITU C7 conversion, sets use of ANI. See Section 6.2.1.4, The config sp200 Command for ANSI SS7 to ITU C7 Signaling.

Note: On systems performing ANSI SS7 to ITU C7 conversion, this command is available only if the optional ANI feature has been installed.

linkdown ANSI SS7, ITU C7

Disables an SS7 signaling link (ANSI or ITU). See Section 4.3.3, The linkdown Command.



4.3 Configuring Signaling System 7 Protocols

You can configure the SS7 protocols as indicated in the following sections. These sections include commands that are used in each SS7 protocol that the SP201 supports: ANSI SS7 and ITU C7 (including variants).

• You can use the config link command to designate the originating and destination point codes for SS7 protocols. See Section 4.3.1, The config link Command.

• You use the config network command to configure adjacent and non-adjacent links. See Section 4.3.2, The SP201’s config network Command.

• You can use the linkdown command to disable a link. See Section 4.3.3, The linkdown Command.

• You can use the linkup command to enable a link. See Section 4.3.4, The linkup Command.

• In ANSI SS7 to ITU C7 signaling (including variants), you can use the config sp200 command to indicate use of alternate number insertion (ANI). See Section 6.2.1.4, The config sp200 Command for ANSI SS7 to ITU C7 Signaling.

Note: The commands are the same for configuring ANSI SS7 and ITU C7, including ISUP variants. The parameters will show values for the type of SS7 protocol you are configuring. Some parameters in some commands may not appear for certain types of SS7 protocols.

4.3.1 The config link Command

You use the config link command on software that converts between a System Signaling 7 protocol (ANSI SS7 or ITU C7) and another protocol. The

linkup ANSI SS7, ITU C7

Restores a disabled SS7 link to operation. See Section 4.3.4, The linkup Command.

Table 4-1. SS7 Protocol Configuration Commands (2 of 2)

Command Name Protocol Description


Configuring Signaling System 7 Protocols 4-5

config link command lets you designate which SS7 trunk will carry point code information.

Figure 4-1 illustrates the task flow for the config link command. The procedure below explains the details.

Figure 4-1. Task Flow for the config link Command

How to Use the config link Command

1 At the user> prompt, type config link x and press Enter, where x is the trunk that supports the SS7 link.



Note: In CAS to SS7 standalone software, the default link SS7 link is on trunk 5. The value for x is 5.

Note: If you type just config link and press Enter, the system asks for the number of the trunk that will carry the point code. Type 5 and press Enter.

If the SS7 link has already been assigned to this trunk, the following prompt appears. Go to Step 3.

If the SS7 link has not been assigned to this trunk, the following prompt appears.

2 Type y and press Enter.

The SS7 link is removed from any previously assigned trunk, and is assigned to this trunk. The following prompt appears.

3 Type the timeslot for signaling (24 for T1 lines, 16 for E1 lines) and press Enter.

Protocol for trunk 5 is Q767This trunk is currently assigned to the Q767 SS7 protocolWhich timeslot (1-31; current=16)? :

Protocol for trunk 5 is Q767Assign the Q767 SS7 to this trunk? (y or n; current="n") :

Which timeslot (1-31; current=16)? :



The system accepts the timeslot, and displays a prompt similar to the following. (The other protocol for the CIC depends on the protocol-conversion software on the SP201.)

4 Enter the CIC (for the other protocol) to which you wish to map unmapped SS7 CICs, and press Enter.

The system accepts the CIC, and displays the following prompt:

5 Type the appropriate originating point code, in the format n-n-n, and press Enter.

Note: Get all point codes from your network administrator.

If the code is valid, the system accepts it. Then it displays the following prompt:

6 Type the appropriate destination point code, in the format n-n-n, and press Enter.

If the code is valid, the system accepts it. Then the console displays the following prompt:

Enter an R2 CIC to map UNMAPPED CICs to (0-16383; current=65535) :

Originating Point Code (current = 0-0-2) :

Destination Point Code (current = 0-0-3) :



7 Enter the speed at which you wish this channel to carry traffic, and press Enter.

The system accepts the speed and displays one of the following prompts:

• Signaling-conversion software (go to Step 9):

• ITU C7 ISUP Call Generator (continue to Step 8):

8 Enter the first CIC of the range to use, and press Enter.

The following prompt is displayed.

9 If you have already configured trunks 1–4 for the protocol they will use, type y and press Enter.

Note: If you do not type y, you will need to warmstart the SP201 for the changes to take effect. See Section 2.4.1, Warmstarting the SP201.

Link speed (56 or 64; current=64) :

The system must be reset for changes to take effect. Do you want to reset now? (y/n)

Enter first Cic number of range to use; (current=1) :

The system must be reset for changes to take effect. Do you want to reset now? (y/n)



The SP201 does a warmstart. It now uses the new configuration. The user> prompt is displayed.

4.3.2 The SP201’s config network Command

You use the config network command to configure network parameters. This command allows you to set up address point codes for the SP201 and the adjacent and non-adjacent nodes on both sides of the network.

An adjacent node is a device that has a direct ANSI SS7 or ITU C7 link to the SP201. A non-adjacent node is a device with an indirect ANSI SS7 or ITU C7 link to the SP201—that is, there is at least one device between the non-adjacent device and the SP201.

The config network command is used in software for ANSI SS7 to ITU C7 or for any SS7 to ISDN conversion. It is not used in CAS to SS7 conversion.

The procedure below explains how to use the command. You need to have the Network Provisioning Plan worksheet (Appendix A, Site Planning Worksheet) completed and handy before using the config network command.

How to Use the SP201’s config network Command

Note: If the card set performs ANSI SS7 to ITU C7 protocol conversion, both sides of the network will be active. When you use the config network command in ANSI SS7 to ITU C7 protocol-conversion software, you must configure both sides of the network.

However, in software that converts between SS7 and ISDN, there is only one active network side to configure. In the procedure, we have configured ITU C7 as the active side of the network. If the cardset in your SP201 uses the ANSI SS7 protocol instead of ITU C7, be sure to configure the ANSI SS7 side as active.

Note: If you enter an invalid value while using the config network command, the system displays an error message and prompts you for a valid entry. The system continues to prompt for a valid entry until you enter the correct data or type exit or quit.



Note: In the steps of this procedure, ns represents the side of the network you are configuring (ANSI or ITU), and os represents the other side of the network. (You configure os parameters only for ANSI SS7 to ITU C7 protocol conversion.)

1 At the user> prompt, type config network and press Enter.

If you are configuring SS7 to ISDN software, a prompt similar to the following is displayed. Go to Step 5.

Note: In standalone ANSI SS7 to ITU C7 software, you configure both sides of the network (ANSI and ITU). You configure only one side at a time.

In standalone SS7 to ISDN software, the system automatically indicates the side of the network that you configure.

If you are configuring ANSI SS7 to ITU C7, a prompt similar to the following is displayed:

2 Do one of the following:

a Type n if you want to leave the links up on one side of the network (Side B in this scenario) even if all the links on the other side (Side A) of the network fail.

The following prompt is displayed. Go to Step 4.

Enter the number of adjacent nodes on the ns network side (0-4; current=0) :

Enable link takedown on side B on failure of all links on side A (y/n; current=n) :



b Type y if you want a failure of all links on one side of the network (Side A in this scenario) to take down the other side of the network (Side B).


3 Enter the amount of time after Side A fails, in tenths of a second, before links on Side B are disabled. The default is one second.

The following prompt is displayed:


a If you are configuring the ANSI SS7 side of the network, type ANSI (or ansi) and press Enter.

b If you are configuring the ITU C7 side of the network, type ITU (or itu) and press Enter.

The following prompt appears.

Network side to configure. Enter "q" to quit. ANSI or ITU :

Time to disable links on side B (in 100ms units, 1-500; current=10) :

Network side to configure. Enter "q" to quit. ANSI or ITU :

Enter the number of adjacent nodes on the ns network side (0-4; current=0) :



5 Type the number of adjacent nodes for the ns side of the network, and press Enter. (An adjacent node is a node that has a direct ANSI SS7 or ITU C7 link to the SP201.)

a If this side of the network is inactive, type 0 to disable it. (This renders the card an os stack card for the card set.)

The following prompt is displayed. Go to Step 14.

b If this side of the network is active, enter the number of adjacent nodes connected to this side of the SP201, and press Enter.

Note: Standalone software has the following number of signaling links:

• There are up to four signaling links on a standalone card that performs ANSI SS7 to ITU C7 protocol conversion.

• There are up to four signaling links on a standalone card that performs SS7 to ISDN protocol conversion.

A prompt similar to the following is displayed:

6 Enter the SP201’s point code, in the format n-n-n, and press Enter.



The system must be reset for changes to take effectDo you want to reset now? (y/n)

Enter the ns point code of the SP200 (current=0-0-2) :



7 Enter a subservice field, and press Enter.

If you are configuring ANSI, the following prompt is displayed. Go to Step 9.

If you are configuring ITU, a prompt similar to one of the following is displayed. (The prompt’s options depend on the software on the SP201.)

• For ITU C7:

• For an ETSI ISUP variant of ITU C7:

• For the Spanish ISUP variant of ITU C7:

Enter the ns sub service field 0 = International 0 1 = International 1 2 = National 0 3 = National 1Enter 0-3; (current=0) :

Enter the point code of ns adjacent Node p (current=0-0-3) :

Configure C7 ISUP version (Enter 1 for Q767 2 for Q763 ;current= 2):

Configure ETSI Version 1 or Version 2 (1/2;current= 2):

Enter the country variant to be configured 1 = TASA 2 = TESA 3 = CTC 4 = TDPEnter 1-4; (current=1) :



Note: ETSI ISUP uses ETSI version 1 or ETSI version 2. In ANSI SS7–ITU C7 software, the default ISUP version for ITU C7 and for ISUP variants is Q763. Check with your network administrator for the ISUP version to use.

8 Type the code for the ISUP version (or the code for the country variant in Spanish ISUP), and press Enter.

A prompt similar to the following is displayed.

9 You need to configure the adjacent nodes for this side of the network. In the subsequent steps, p indicates the adjacent node you are configuring. (The value for p ranges from 0 to one less than the number of adjacent nodes you specified in Step 5.) Perform all of the following substeps.

a Enter the point code of the current adjacent node p, in the format n-n-n, and press Enter.


One of the following occurs:

• In SS7 to ISDN software, a prompt similar to the following is displayed. Go to Step 9c.

• In ANSI SS7–ITU C7 software, a prompt similar to the following is displayed:

Enter the point code of ns adjacent Node p (current=0-0-3) :

Is ns adjacent Node p an STP (y/n; current=n) :



Note: If the card performs ANSI SS7 to ITU C7 protocol conversion, each node in a network has a point code for this side of the network and an alias point code for the other side of the network. The point code identifies the signaling link on the SP201.

Get all point codes from your network administrator.

b Enter the os alias point code of the ns adjacent node p, in the format n-n-n, and press Enter.


c If the adjacent node p is a signal transfer point (STP), type y; otherwise, type n. Then press Enter.


d Enter the number of links in the link set, and press Enter.

If you designated only one link in the link set, the following prompt is displayed. Go to Step 9f.

Enter the os alias point code of ns adjacent Node p (current=1-1-3) :

Is ns adjacent Node p an STP (y/n; current=n) :

Enter the number of links in linkset to ns adjacent node p. (1-5; current=1) :

Enter an ns CIC to map UNMAPPED CICs to (0-4095; current=0) :



If you designated more than one link in the link set, a prompt similar to the following is displayed:

e If you designated more than one link in the link set, do one of the following, and press Enter.

• Type y for load sharing.

• Type n for no load sharing.

In either case, the following prompt is displayed.

f Enter the appropriate CIC number for unmapped CICs, and press Enter.

Note: The SP201 treats unmapped CICs as if they are not assigned to a physical T1 or E1 channel in one of the networks, nor assigned to a peer CIC. These unmapped CICs are referred to as “unequipped.” The SP201 does not autonomously send unequipped messages. For example, in R2–ITU C7 signaling, when the SP201 receives a message from the R2 network using an unequipped CIC, it requires an unequipped C7 CIC for the translated C7 message. The SP201 always uses the same C7 CIC in this translation.

Your signaling provider should provide you with an unequipped CIC that is safe to use for this purpose. Refer to the network provisioning plan.

To map CICs of one protocol to CICs of the peer protocol, follow the procedure in Chapter 7, Timeslot and CIC Configuration.

Load Sharing of links in linkset p? (y/n; current=y) :




A prompt similar to the following is displayed, where q is the link number in the linkset for p. (The value for q ranges from 0 to one less than the number of links you specified in Step 9d.)

g Enter the appropriate Signaling Link Code (SLC), and press Enter. (Assign the first link in each link set an SLC of 0. Assign the next link an SLC of 1, and continue incrementing the SLC for each subsequent link in the link set.)


h Enter the correct trunk number, and press Enter.


i Enter the correct timeslot number for signaling, and press Enter.

Note: Indicate signaling timeslot 16 for E1 lines, which ITU C7 uses. Indicate signaling timeslot 24 for T1 lines, which ANSI SS7 uses.


Enter SLC for link q of linkset p (0-15; current=0) :

Enter trunk number for link q of linkset p (1-8; current=5)? :

Enter timeslot number for link q of linkset p (1-24; current=24)? :

Link speed for link q of linkset p (56 or 64; current=64) : 56



j Type either 56 [kbps] or 64 [kbps], and press Enter.


k Do one of the following:

• Type y and press Enter to enable preventive cyclic retransmission (PCR) error checking.

• Type n and press Enter to continue using basic error checking.


l Enter the appropriate priority number (0–3, where 3 indicates the highest priority) for link management messages, and press Enter.


m Enter the appropriate priority (0–3, where 3 indicates the highest priority) for this link, and press Enter.

Then, if this is the last link in the linkset, the following prompt is displayed. Continue to Step 9n.

Enable PCR error checking for link q of linkset p (y/n; current=n) :

Link management message priority ([0-3]; current=3) :

Enter priority for link q (0-3; current=0) :



If the above prompt does not appear, this is not the last link in the linkset. Go to Step 9p.

n Do one of the following:

• If you are configuring ITU C7, enter the appropriate priority number (0–3, where 3 indicates the highest priority), and press Enter.

• If you are configuring ANSI SS7, select priority 4. (The priorities will be assigned according to the BellCore ANSI specifications.)

If you said yes to loadsharing of links in Step 9e, one of the following responses occurs:

• If there are more links to configure, the following prompt is shown, where q has incremented by 1. Go to Step 9g. (You must perform Step 9g through Step 9l until all links in the link set have been configured.)

• If you have finished configuring links, and you are not configuring ANSI SS7–ITU C7 software, go to Step 9p.

• If you have finished configuring all links, and you are configuring ANSI SS7–ITU C7 software, the following prompt is displayed. Continue to Step 9o.

o Do one of the following:

ISUP message congestion priority [0-3, 4=ANSI priorities] (current=4) :

Enter SLC for link q of linkset p (0-15; current=0) :

Do you want to change ISUP parameters?



• If you wish to change ISUP parameters, type y and press Enter. Go to Section 4.3.2.1, Changing ISUP Parameters in the config network Command. (After you have finished configuring ISUP parameters, that procedure will return to the appropriate point in this procedure.)

Note: Changes in the ISUP parameters affect only ANSI SS7 to ITU C7 signaling.

You can change ISUP parameters for one side of the network, for both sides, or for neither side.

• If you do not need to change ISUP parameters, type n and press Enter.

p Consider the following results:

If there are additional adjacent nodes to configure, a prompt similar to the following is displayed (where p has incremented by 1, to advance to the next node). Go to Step 9a and proceed through Step 9l to configure the next adjacent node.

When you have finished configuring all adjacent nodes, a prompt similar to the following is displayed. Continue to Step 10.

10 Enter the number of non-adjacent nodes, and press Enter.

Caution: The SP201 can support a maximum of four adjacent nodes. The SP201 can support a total of 30 adjacent and non-adjacent nodes.

Enter the point code of ns adjacent Node p (current=UNDEFINED) :

Enter the number of non-adjacent nodes on the ns network side (0-26; current=0) :

!


If you enter 0 as the number of non-adjacent nodes, the system indicates the linksets you have configured, similar to the following. (Warning messages, if any, are also displayed.)

Then one of the following occurs:

• If there is not more than one linkset, a prompt similar to the following prompt is displayed, asking for the point code to use when forwarding messages for this side. Go to Step 13.

• If there is more than one linkset, another set of prompts appears. Go to Step 12.

If you enter 1 or more as the number of non-adjacent nodes, a prompt similar to the following is displayed. (The value for r ranges from 0 to one less than the number of non-adjacent nodes you indicated.) Continue to Step 11.

11 Do all of the following:

a Enter the correct point code of the non-adjacent node r, in the format n-n-n, and press Enter.

Note: Get point codes from your network administrator.

The ns network has the following linksets0 Linkset from SP200 to adjacent node with point code 0-0-3

Which ns side point code to forward messages with DPC = SP200 pc (current=0-0-3) :

Enter the point code of ns non-adjacent Node r (current=1-2-3) :




b Enter the correct os alias point code of the ns non-adjacent node r, in the format n-n-n, and press Enter.


c Do one of the following:

• Type y and press Enter if the non-adjacent node is a signal transfer point (STP).

• Type n and press Enter if the non-adjacent node is not an STP.

The following prompt appears:

d Enter the appropriate CIC number, and press Enter.

Enter the os alias point code of ns non-adjacent Node r (current=2-3-0) :

Is ns non-adjacent Node r an STP (y/n; current=n) :




Note: The SP201 treats unmapped CICs as if they are not assigned to a physical T1 or E1 channel in one of the networks, nor assigned to a peer CIC. These unmapped CICs are referred to as “unequipped.” The SP201 does not autonomously send unequipped messages. For example, in R2–ITU C7 signaling, when the SP201 receives a message from the R2 network using an unequipped CIC, it requires an unequipped C7 CIC to use in the translated C7 message. The SP201 always uses the same C7 CIC in this translation.

Your signaling provider should provide you with an unequipped CIC that is safe to use for this purpose. Refer to the network provisioning plan.

To map CICs of one protocol to CICs of the peer protocol, follow the procedure in Chapter 7, Timeslot and CIC Configuration.


e Do one of the following:

• If you are configuring ITU C7, enter the appropriate priority number (0–3, where 3 indicates the highest priority), and press Enter.

• If you are configuring ANSI SS7, select priority 4. (The priorities will be assigned according to the BellCore ANSI specifications.)

If you are not configuring ANSI SS7–ITU C7 software, the prompt depends on the remaining number of links to configure. Go to Step 11g.

If you are configuring ANSI SS7–ITU C7 software, the following prompt is displayed:

ISUP message congestion priority [0-3, 4=ANSI priorities] (current=4) :




f Do one of the following:

• If you wish to change ISUP parameters, type y and press Enter. Go to Section 4.3.2.1, Changing ISUP Parameters in the config network Command. (When you have finished configuring ISUP parameters, that procedure will return to the appropriate point in this procedure.)

Note: Changes in the ISUP parameters affect only ANSI SS7 to ITU C7 signaling.

You can change ISUP parameters for one side of the network, for both sides, or for neither side.

• If you do not need to change ISUP parameters, type n and press Enter.

g Consider the following results:

If there is another non-adjacent node to configure, a prompt similar to the following prompt appears (where r has incremented by 1). Go to Step 11a to configure this node.

If you have configured all the non-adjacent nodes, the following occurs:

• The system indicates the linksets you have configured, similar to the following. (Warning messages, if any, are also displayed.)

Enter the point code of ns non-adjacent Node r (current=UNDEFINED) :

The ns network has the following linksets0 Linkset from SP200 to adjacent node with point code 0-0-31 Linkset from SP200 to adjacent node with point code UNDEFINED2 Linkset from SP200 to adjacent node with point code 2-0-23 Linkset from SP200 to adjacent node with point code 0-2-1



• Then one of the following appears:

- If there is not more than one linkset, the following prompt is displayed, asking for the point code to use when forwarding messages for this side (the ITU side, in this example). Go to Step 13.

- If there is more than one linkset, another set of prompts appears. Continue to Step 12.

12 If there is more than one linkset, do all of the following for each set of questions that appears. (The number of question sets equals the total number of adjacent and non-adjacent nodes. The nodes are identified by their point codes, shown as “pc.” You will configure all of the adjacent nodes first. Then you will configure the non-adjacent nodes.)

First, the following prompt appears, indicating that you are configuring adjacent nodes.

Then, for each node, a prompt similar to the following prompt appears.

a Enter the number of linksets that can reach the indicated node.


Configuring adjacent nodes

Enter the number of linksets that can reach pc 0-0-3 on the ns network side. (1-2; current=1) :



If you indicated that more than one linkset can reach the node, you will see the following message.

Then you will see the following prompt.

b Identify one linkset that can reach this node.

If you indicated that more than one linkset can reach the node, you will see the following message, followed by a prompt to identify another linkset that can reach this node. (Repeat Step 12b until you have identified all linksets that can reach the node.)

Next, you will see one of the following responses:

• If there is another node for which you need to indicate the number of reachable linksets on this side of the network, you see a prompt similar to the second prompt shown below. (If you have finished configuring adjacent nodes, and if there are non-adjacent nodes to configure, you will see both of the following prompts.) Go to Step 12a.

Current value is Undefined :

Through which linksets (0-1) can a message from the SP200 reach node with point code 0-0-3?Current Value is 0 :

Current value is Undefined :

Through which linksets (0-1) can a message from the SP200 reach node with point code 0-0-3?Current Value is 0 :

Configuring non-adjacent nodes



• If you have finished indicating linksets that can reach nodes, the following prompt appears.

13 Enter the appropriate point code for this side to forward the indicated messages to, and press Enter.

The following prompt is displayed:


a If you have configured both sides of the network, type y to reset now.

The card resets. When the card has reset, the user> prompt re-appears.

b If you have configured only one side of the network, type n to wait until later, and press Enter.

The user> prompt re-appears. (You will need to warmstart the card later to make the changes take effect. See Section 2.4.1, Warmstarting the SP201.) Continue to Step 15.

Enter the number of linksets that can reach pc 3-4-1 on the ns network side. (1-2; current=1) :


The system must be reset for changes to take effectDo you want to reset now? (y/n)



15 To configure the other side of the network, execute the config network command again (starting with Step 1).

4.3.2.1 Changing ISUP Parameters in the config network Command

As part of the config network command, you have the option of changing ISUP parameters. To do so, follow the procedure below. When you are finished, return to the step that brought you from the config network procedure to this section.

Note: Changes in the ISUP parameters are in effect only in ANSI SS7 to ITU C7 signaling.

How to Change ISUP Parameters in the config network Command

Note: The only way to get to this procedure is from the config network procedure. When you are configuring adjacent nodes (Step 9o of the config network procedure) or non-adjacent nodes (Step 11f of the config network procedure), the console displays the following prompt.

1 Type y and press Enter.


NOT resetting...user>




Note: In this procedure, ns represents the side of the network you are configuring, and os represents the other side of the network.


a If you do not wish to configure this parameter, type n and press Enter.

The following prompt appears. Go to Step 3.

b If you wish to configure the ISDN Preference field in the IAM Forward-Call Indicator, do all of the following:

• Type y and press Enter.

Note: You can force a call to a specific setting and route it over ISDN User Part (ISUP) facilities for its entire end-to-end path (from the end office where the call originated to the end office where the call terminates), or you can pass the call as it is. The value for this parameter is customer-specific.

The following options appear.

Configure IAM Forward Call Indicator ISDN pref going toward ns side? :

Configure IAM Forward Call Indicator conversion going toward ns side? :



• Type your ISDN Preference and press Enter.





b If you wish to configure this parameter, do all of the following:



1- copy incoming value, do not force 2- ISUP preferred all the way 3- ISUP not required all the way 4- ISUP required all the way

Enter choice (current=copy incoming) :

Configure IAM Forward Call Indicator conversion going toward ns side? :

Configure Called Party Number Nature of Address Ind. going toward ns side? :

1- Pass-Through 2- National 3- International

Enter choice (current=Pass-through) :



• Type your choice and press Enter.

Note: See Table 4-2 for descriptions of values for the Forward Call Indicator field.



a If you do not wish to configure this parameter, type n and press Enter. The following prompt is displayed. Go to Step 5.

Table 4-2. Values for Forward Call, Called Party, and Calling Party Fields

Value Description

1 (This is

the default value.)

Passes the value of the Indicator field through (for the parameter under configuration), with no modification except when the SP201 strips the incoming country code from the Called Party Number incoming IAM message. (For information on configuring the SP201 so that it strips the incoming country code from the incoming IAM message, see Step 7b.)

2 Sets the outgoing value of the Indicator field for the parameter under configuration to National.

3 Sets the outgoing value of the Indicator field for the parameter under configuration to International.

Configure Called Party Number Nature of Address Ind. going toward ns side? :

Configure Calling Party Number Nature of Address Ind. going toward ns side? :





Options similar to the following options appear.


Note: See Table 4-2 for descriptions of values for the Called Party Nature of Address Indicator field.



a If you do not wish to configure this parameter, type n and press Enter. The following prompt appears. Go to Step 6.






Configure Calling Party Number Nature of Address Ind. going toward ns side? :

Configure REL Cause Indicator Location value going toward ns side? :




Note: See Table 4-2 for descriptions of values for the Calling Party Nature of Address Indicator field.










Configure REL Cause Indicator Location value going toward ns side? :

Configure special processing for digits going toward ns side? :








b If you wish to configure this parameter, type y and press Enter.

The following option appears.

1- Pass-Through 2- User 3- Local private network 4- Local local network 5- Transit network 6- Remote local network 7- Remote private network 8- International 9- Network beyond interworking point

Enter choice (current = Pass-through) :

Configure special processing for digits going toward ns side? :

Group message response timer (in 100ms units, 1-500; current=100) :

remove language digit (y/n; current=n) :




a If you wish to remove the language digit, type y and press Enter.

b If you do not wish to remove the language digit, type n and press Enter.

The following option appears.


a If you do not wish to remove a country code, type n and press Enter.


b If you wish to remove a country code, type y and press Enter.


remove specific country code? (y/n; current=<none>) :


enter country code (up to 3 digits; current=<none>) :



Note: If you configure the system to strip the country code, the system strips it when it is present and does nothing when the country code is not present.

If you configure the system to strip the country code and configure either the Forward Call Indicator Conversion or the Called Part Nature of Address or both for Passthrough, the system sets them to National when the country code is present and stripped, and to International when the country code is not present.

If you enter an invalid country code, the SP201 gives you a warning message and the option to re-enter the country code.

10 Type the country code to remove, and press Enter.


11 Enter the timer’s value (in tenths of a second) and press Enter. (Or, to accept the default, just press Enter.



a Answer n and press Enter. Go to Step 17.

b Answer y and press Enter.



Configure the Feature codes towards ns side? (y/n;current= n) :



13 Select the type of message whose feature codes you wish to modify.

A menu similar to the following is displayed.


a If you have finished modifying feature codes, enter q.

Modification of feature codes has finished. Go to Step 17.

b Select the feature code you wish to modify.


15 Type the value to map in the incoming ns side, and press Enter.

Feature codes associated with which of the following messages you want to modify towards ITU?Enter 1 for ACM; 2 for ANM; 3 for CPG; 4 for IAM; 5 for FAC; q to quit:

Configure the feature code towards outgoing ITU side.The Existing mapping is as followsSerial Number Incoming ITU Feature code Outgoing ANSI featurecode---------------------------------------------------------------------- 1 Featurecode1 0 ----> 0 2 Featurecode2 0 ----> 0 3 Featurecode3 0 ----> 0Select the feature code serial number you want to modify(1/2/3 or 'q'): 1

Enter the value to be mapped in the incoming ns side(0-255; current = 0): 3

Enter the value you want to map towards outgoing os side(0-255): 7



16 Type the value to map to the outgoing os side, and press Enter.

The feature code menu is redisplayed. Go to Step 14.

17 Consider one the following prompts, resulting from the step that directed you to this point in the procedure:

If you are configuring the ANSI SS7 side of the network, the following prompt appears. Go to Step 20.

If you are configuring the ITU C7 side of the network, and the ITU C7 type is not Spanish ISUP, the following prompt appears. Go to Step 20.

If you are configuring the Spanish ISUP type of ITU C7, the following prompt appears.

18 Type y or n and press Enter.


Configure translation of incoming Q767 transmission medium requirement?:

Configure ANSI information transfer capability field? :

Configure IAM FCI ISDN access indicator going toward SISUP side as Orginating Access ISDN (y/n;current=y):

Configure Calling Party number Screening indicator going toward SISUP side as Network Provided (y/n;current=y):







For ITU C7, the following prompt appears. Go to Step 23.

For ANSI SS7, the following prompt appears. Go to Step 24.

b If you wish to configure this parameter, type y and press Enter.

A translation menu similar to the following appears. (The menu shown here appears when you are configuring the ITU side of the network.)

Configure ANSI information transfer capability field? :

Add ST to called party digits (y/n; current=n) : y

Enable Event presentation restriction towards ANSI side? (y/n; current=n) : y




a To exit the translation menu, type the number for Quit and press Enter.

For ITU C7, the following prompt appears. Go to Step 23.

For ANSI SS7, the following prompt appears. Go to Step 24.

b To change a translation, type the line number corresponding to the Incoming item (in column 2) whose Outgoing counterpart you wish to change, and press Enter.

Options similar to the following options appear, where x is the Incoming item whose line number you typed.

Incoming ANSI Outgoing ITUNumber Information transfer capability Transmission Medium Requirement----------------------------------------------------------------------------- 1 Speech --> Speech 2 Unrestricted Digital Information --> 64 kbit/s Unrestricted 3 Restricted Digital Information --> 64 kbit/s Unrestricted 4 3.1kHz Audio --> 3.1 kHz audio 5 7kHz Audio --> Speech

6 QUITEnter the number of the parameter you wish to change :

Add ST to called party digits (y/n; current=n) : y

Enable Event presentation restriction towards ANSI side? (y/n; current=n) : y



22 Select the Outgoing format into which to translate the Incoming messages, and press Enter.

The selected translation is set. The system changes the Outgoing format as specified, and displays the translation menu again, showing the change (if any). Repeat Step 21.


a To add an ST at the end of the Called Party digit string, type y and press Enter.

b To bypass this option, type n and press Enter.



If you are configuring the ITU side of the network, the following prompt is displayed. Go to Step 28.

Translate incoming ns "x" to outgoing os 1 Speech 2 64 kbit/s Unrestricted 3 3.1 kHz audio 4 2X64 kbit/s Unrestricted 5 384 kbit/s Unrestricted 6 1536 kbit/s Unrestricted 7 1920 kbit/s UnrestrictedSelection (current=Speech) :

Remove User Service Info field from outgoing Q767 IAM (y/n; current=n) :

Remove status bits for GRA range value less than 10 (y/n; current=n) :



If you are configuring the ANSI side of the network, the following prompt is displayed.






Configuration of ISUP parameters is finished. Go to Step 34.

28 On the ITU side of the network, to indicate whether to remove status bits for GRA range value less than 10, type y or n and press Enter.


Pass ACM backward call indicator charge value of charge (y/n: current=n) :

Pass CON backward call indicator charge value of charge (y/n: current=n) :

Pass ANM backward call indicator charge value of charge (y/n: current=n) :

Remove status bits for CGBA range value less than 10 (y/n; current=n) :








a To enable this option, type y and press Enter.

The system strips the prefix digit from the outgoing ITU C7 IAM called party number.

Note: You can enable this option only if you have specialized equipment to support it. This option applies only to IAM messages in the ANSI SS7 to ITU C7 direction.

If you enable this option, the system uses the first digit from the incoming SS7 IAM called party number to determine the value of the TMR field of the outgoing C7 IAM message. The incoming prefix digit determines the outgoing C7 IAM message as follows:

• Speech calls: If the incoming ANSI SS7 side prefix digit is 0, 1, 2, 3, 4, 5, 8, or 9, the outgoing ITU C7 IAM message has a TMR value of Speech and has no user service information (USI) parameter. The system strips the prefix digit from the outgoing ITU C7 IAM called party number.

Remove status bits for CGUA range value less than 10 (y/n; current=n) :

Enable called party number prefix to Q767 TMR translation (y/n; current=n) :



• 64 kbit/sec digital calls: If the incoming ANSI SS7 side prefix digit is 6, the outgoing ITU C7 IAM message has a TMR value of 64 kbps unrestricted and has no USI parameter. The system strips the prefix digit from the outgoing ITU C7 IAM called party number.

• 56 kbit/sec digital calls: if the incoming ANSI SS7 side prefix digit is 7, the outgoing ITU C7 IAM message has a TMR value of 64 kbps unrestricted and has the access transport and USI parameters shown in Table 4-3.

b To disable this option, type n and press Enter.

Table 4-3. Access Transport and User Service Information Parameters

Parameter Length Octet Parameter Elements or Values

Access Transport

14 n/a n/a 6d 08 80 31 32 33 34 35 36 37 7c 02 88 90

User Service Information

4 2 InfoXfrCapability Unrestricted Digital Information

3 Coding Standard CCITT

3 Extension bit 1

4 InfoXfr-rate 64 kbps

4 Transfer mode Circuit mode

4 Extension bit 1

5 Userinfo-layer1Prtc

CCITT Standardized Rate Adaption V.110/X.30

5 Layer 1 ident User Information Layer 1 Protocol

5 Extension bit 0

5a User Rate 56.0 kbps Rec. V.6

5a Negotiation In-Band Negotiation Not Possible

5a Sync/Async Synchronous

5a Extension bit 1



Whether you answer y or n, the following prompt appears.

Note: You can program the SP201 to process the subsequent address message—that is, to strip the called party numbers from the subsequent address message and reinsert them into the IAM before sending the IAM to the ANSI SS7 side.

In a homogeneous environment, these messages carry additional digits that the receiving switch uses to route the call. Since the ANSI SS7 switch does not process subsequent address messages, the SP201 must accumulate all digits in the original IAM plus all digits in subsequent address messages, then forward a single IAM to the ANSI SS7 side.

The IAM forwarding timer sets the length of time the SP201 will accumulate the ITU C7 digits before sending the IAM to the ANSI SS7 side.


a To disable the timer, type 0 and press Enter.

Caution: Setting the IAM forwarding timer to 0 will disable the feature. Do this only if the ITU C7 equipment connected to your system will never send subsequent address messages.

b Type the value for the timer (in tenths of a second), and press Enter. (Or just press Enter to accept the default.)


IAM forwarding timer (in 100ms units, 1-50, 0 to disable; current=0) :

Use OLI to override Calling Party Category (y/n; current=n) :

!



33 Answer y or n, and press Enter.

Note: The prompt that appears depends on where you are in the procedure for the config network command. In Step 34, the list of results indicates your action for the prompt you see.

34 Consider the following and respond accordingly:

If you entered this procedure from Step 9o of the procedure How to Use the SP201’s config network Command (while configuring adjacent nodes), one of the following prompts appears.

• If there are additional adjacent nodes to configure, a prompt similar to the following is displayed (where p has incremented by 1, to advance to the next node). Go to Step 9a of the config network procedure, and proceed through the steps to configure the next adjacent node.

• If there are no more adjacent nodes, the following prompt appears. Go to Step 10 of the config network procedure.

If you entered this procedure from Step 11f of the procedure How to Use the SP201’s config network Command (while configuring non-adjacent nodes), do one of the following:

• If there is another non-adjacent node to configure, a prompt similar to the following prompt appears (where r has incremented by 1). Go to Step 11a of the config network procedure to configure this node.

Enter the point code of ns adjacent Node p (current=UNDEFINED) :

Enter the number of non-adjacent nodes on the ns network side (0-28; current=2) :



• If there are no more non-adjacent nodes to configure, the following prompt appears. Go to Step 12 of the config network procedure.

4.3.3 The linkdown Command

In ANSI SS7 to ITU C7 signaling, you can use the linkdown command to disable a link.

Note: You use the config network command to set links up. See Section 4.3.2, The SP201’s config network Command.

How to Use the linkdown Command

1 At the user> prompt, type linkdown x and press Enter, where x is a valid link.

The link is disabled, and the user> prompt is redisplayed.

Enter the point code of ns non-adjacent Node r (current=UNDEFINED :

The ns network has the following linksets0 Linkset from SP200 to adjacent node with point code 0-0-31 Linkset from SP200 to adjacent node with point code 1-0-5

user> linkdown 0

user>



Note: You can use the show links command to see whether a link is up. See Section 9.2.11.16, The show links Command. (If a link is down, the value for the Link Enabled field will be No.)

4.3.4 The linkup Command

In ANSI SS7 to ITU C7 signaling, you can use the linkup command to enable a link.

Note: You use the config network command to set links up. See Section 4.3.2, The SP201’s config network Command.

How to Use the linkup Command

1 At the user> prompt, type linkup x and press Enter, where x is a valid link.

The link is enabled, and the user> prompt is redisplayed.

user> show links ************************************************************************************************************ SS7 LINK STATUS ************************************************************************************************************* Link Link Destination Link Link Mgmt Msg Link LinkLink Location Type Point Code SLC Speed PCR Prior Prior Enabled Status****************************************************************************** 00 1:24 ANSI 1-0-1 0 64K No 0 3 Yes Down 01 5:16 ITU 0-0-3 0 64k No 0 1 No Down******************************************************************************user>

user> linkup 0

user>



Note: You can use the show links command to see whether a link is up. See Section 9.2.11.16, The show links Command. (If a link is up, the value for the Link Enabled field will be Yes.)

user> show links ************************************************************************************************************ SS7 LINK STATUS ************************************************************************************************************* Link Link Destination Link Link Mgmt Msg Link LinkLink Location Type Point Code SLC Speed PCR Prior Prior Enabled Status****************************************************************************** 00 1:24 ANSI 1-0-1 0 64K No 0 3 Yes Down 01 5:16 ITU 0-0-3 0 64k No 0 1 No Down******************************************************************************user>


SP201 I&M: Configuration of SS7 Protocols

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Transcript of SP201 I&M: Configuration of SS7 Protocols