Release Notes Page 1 of 13 Dialogic Proprietary

Release Notes

Dialogic® IMG 2020 Integrated Media

Gateway Release 2.3.0 SP1

IMG 2020 2.3.0.57

Issue 1

.4

July 2017

Copyright 2011-2017 Dialogic Corporation

All Rights Reserved

Printed in U.S.A.

Release Notes Page 2 of 13 Dialogic Proprietary

Copyright and Legal Notice

Copyright © 2011-2017 Dialogic Corporation. All Rights Reserved. You may not reproduce this document in whole or in part without permission in writing from Dialogic Corporation at the address provided below.

All contents of this document are furnished for informational use only and are subject to change without notice and do not represent a commitment on the part of Dialogic Corporation and its affiliates or subsidiaries ("Dialogic"). Reasonable effort is made to ensure the accuracy of the information contained in the document. However, Dialogic does not warrant the accuracy of this information and cannot accept responsibility for errors, inaccuracies or omissions that may be contained in this document.

INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH DIALOGIC® PRODUCTS. NO LICENSE, EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED BY THIS DOCUMENT. EXCEPT AS PROVIDED IN A SIGNED AGREEMENT BETWEEN YOU AND DIALOGIC, DIALOGIC ASSUMES NO LIABILITY WHATSOEVER, AND DIALOGIC DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY, RELATING TO SALE AND/OR USE OF DIALOGIC PRODUCTS INCLUDING LIABILITY OR WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, OR INFRINGEMENT OF ANY INTELLECTUAL PROPERTY RIGHT OF A THIRD PARTY.

Dialogic products are not intended for use in certain safety-affecting situations. Please see http://www.dialogic.com/company/terms-of-use.aspx for more details.

Due to differing national regulations and approval requirements, certain Dialogic products may be suitable for use only in specific countries, and thus may not function properly in other countries. You are responsible for ensuring that your use of such products occurs only in the countries where such use is suitable. For information on specific products, contact Dialogic Corporation at the address indicated below or on the web at www.dialogic.com.

It is possible that the use or implementation of any one of the concepts, applications, or ideas described in this document, in marketing collateral produced by or on web pages maintained by Dialogic may infringe one or more patents or other intellectual property rights owned by third parties. Dialogic does not provide any intellectual property licenses with the sale of Dialogic products other than a license to use such product in accordance with intellectual property owned or validly licensed by Dialogic and no such licenses are provided except pursuant to a signed agreement with Dialogic. More detailed information about such intellectual property is available from Dialogic's legal department at 6700 Cote-de-Liesse Road, Suite 100, Borough of Saint-Laurent, Montreal, Quebec, Canada H4T 2B5. Dialogic encourages all users of its products to procure all necessary intellectual property licenses required to implement any concepts or applications and does not condone or encourage any intellectual property infringement and disclaims any responsibility related thereto. These intellectual property licenses may differ from country to country and it is the responsibility of those who develop the concepts or applications to be aware of and comply with different national license requirements.

Dialogic, Dialogic Pro, Dialogic Blue, Veraz, Brooktrout, Diva, BorderNet, PowerMedia, PowerVille, PowerNova, MSaaS, ControlSwitch, I-Gate, Mobile Experience Matters, Network Fuel, Video is the New Voice, Making Innovation Thrive, Diastar, Cantata, TruFax, SwitchKit, Eiconcard, NMS Communications, SIPcontrol, Exnet, EXS, Vision, inCloud9, NaturalAccess and Shiva, among others as well as related logos, are either registered trademarks or trademarks of Dialogic Corporation and its affiliates or subsidiaries. Dialogic's trademarks may be used publicly only with permission from Dialogic. Such permission may only be granted by Dialogic's legal department at 6700 Cote-de-Liesse Road, Suite 100, Borough of Saint-Laurent, Montreal, Quebec, Canada H4T 2B5. Any authorized use of Dialogic's trademarks will be subject to full respect of the trademark guidelines published by Dialogic from time to time and any use of Dialogic's trademarks requires proper acknowledgement.

The names of actual companies and products mentioned herein are the trademarks of their respective owners.

This document discusses one or more open source products, systems and/or releases. Dialogic is not responsible for your

decision to use open source in connection with Dialogic products (including without limitation those referred to herein), nor is Dialogic responsible for any present or future effects such usage might have, including without limitation effects on your products, your business, or your intellectual property rights.

Technical Support

Phone: +1 973 993-1443

E-mail: americas.support@dialogic.commailto:

Release Notes Page 3 of 13 Dialogic Proprietary

Introduction This document describes the Corrected Software Issues for this software product release. The software corrections are documented in the following format:

Customer Issue ID: An alphanumeric ID used in Dialogic CIR tracking system.

Defect ID: An alphanumeric ID used in Dialogic Defect tracking system.

Description: A description of the issue which was resolved.

The following abbreviations may be used within this document:

BDN or BDN 2020 = Dialogic® BorderNet™ 2020 Session Border Controller

BDN EMS = Dialogic® Element Management System for the BDN 2020

IMG 1010 = Dialogic® IMG 1010 Integrated Media Gateway

IMG 2020 = Dialogic® IMG 2020 Integrated Media Gateway

Note that as of the date of publication of this document, the “Dialogic® BorderNet™ 2020 Session Border

Controller” (BDN 2020) product is now being sold by Dialogic under the “Dialogic® IMG 2020 Integrated Media

Gateway” (IMG 2020) name.

A direct system migration path exists for an IMG 2020 from release 2.2 to this release 2.3. The same

configuration files can be used. Refer to the “Software Upgrade/Rollback” section in the IMG 2020 Release 2.3

WebHelp page for a complete procedure on how to perform the upgrade.

Please also note that when upgrading your IMG 2020 from release 2.2 to this release 2.3, new licenses are

required. Contact your sales representative to upgrade your actual 2.2 licenses, at no charge, for units with

current service contracts.

Feature Limitations

This section identifies limitations with features that are wholly or in part not included in this release of the associated product(s):

None.

Release Notes Page 4 of 13 Dialogic Proprietary

Known Issues This section identifies known issues that are wholly or in part not included in this release of the associated product(s):

It is necessary to remove all 2.2.0 licenses from your boot folder before loading a newly acquired 2.3.0 license. Retaining the older license version will prevent the IMG 2020 from loading the 2.3.0 license properly since the 2.2.0 license would still be loaded. Renaming the 2.2 license file is not sufficient. It must be removed completely from the FTP boot folder or the SD card.

New Features

This section identifies new features that are included in this release of the associated product(s). Please check the documentation for what each feature does and how to enable and configure it.

Feature Title

FR-19541 Overriding remote gateway DTMF settings to force the local configuration whatever the

remote SIP/SDP offer is providing.

A new parameter has been added to the SIP profile section of the WebUI to enable this

feature.

FR-19432 New IMG 2020 interworking function to convert SIP REFER into ISDN FACILITY

message.

Refer to the ISDN group configuration and look for the “Transfer connect” option.

FR-19597 SIP call re-attempt based on the next DNS entry upon various SIP response code.

Previous IMG 2020 behavior was to reattempt only on Timeout.

FR-19592 Enhanced SIP registration to allow for multiple REGISTER engines.

Each engine can support single SIP registration mode or Bulk SIP Registration per RFC

6140 for IP PBX IMS enablement.

FR-16277 SIP/AMR Mode-set as per RFC 4867.

FR-19578 Configurable SIP Congestion Response Code to ease IMS network integration.

Some IMS Networks initiate a call retry when the standard 503 is returned upon

congestion scenarios.

FR-19577 Configurable 200ms delay between SIP responses to ease IMS network integration.

Prevention of race condition between 200 (OK) of initial INVITE and 200 (OK) of

subsequent PRACK/UPDATE due to IMS network latency.

FR-19624 Additional CNAM features.

The IMG 2020 now allows for CNAM routing based on “Translation Type” and the use of

Release Notes Page 5 of 13 Dialogic Proprietary

Feature Title

“Global Title” parameters.

FR-19654 Route Incoming Call by IP Address and Port.

The IMG 2020 can now not only route incoming calls by IP address, but also by IP Port.

FR-16397 Multiple Offline Configuration tool improvements.

Various additional new functionalities to help users to manage the IMG 2020

configuration databases. Among them are additional editable configuration items, the

possibility to port a direct connect type of configuration to a multi-nodes EMS type, new

UI look using menu option, reset of the history table, SQL command execution, some

configuration audit capabilities, and more.

FR-19707 Multiple WebUI/EMS/OAM enhancements.

Various WebUI/EMS and OAM enhancements which will help users to better manage the

IMG 2020(s). Among them are better management of the Config_Event and

Config_History tables to avoid system stability issues, additional WebUI features like

displaying the nodes’ Synch status and the number of configuration changes since the

last save, and more.

FR-19501 Faster refreshment of IMG 2020 channel states and System monitoring enhancement.

This product improvement will provide better WebUI performance when updating all

monitoring objects, like the SS7 Channel status, ISDN channel status, Span Status, and

IP facility status.

Note that this feature is under “Controlled Introduction” program and users must

communicate with the Dialogic Technical Support team before usage.

FR-19706 A new feature that will send the fault files to the local SD card when IMG 2020 is

booted from SD card.

FR-19653 Additional SIP-ISUP interworking as per 29.163 specification.

This release introduces the first phase of this interoperability project by implementing

the SIP precondition and p-early_media interworking described in section 7.2.3 of the

specification document.

FR-19408 Redundant EMS support.

Provides support of an Active/Standby mode as redundancy feature for the IMG 2020

multi-nodes EMS component.

Note that this feature is under “Controlled Introduction” program and users must

communicate with the Dialogic Technical Support team before usage.

FR-19495 New ISUP “Redirecting Reason” interwork which will map the reason “0110” (Mobile

Subscriber not reachable) to a valid SIP Diversion header information.

Previously, it was mapped to Reason = Unknown since it is not covered by RFC 5806.

Release Notes Page 6 of 13 Dialogic Proprietary

Feature Title

FR-19362 New hypervisor support for the EMS VEC.

KVM is now supported with this release, and a specific VEC will be available for

download.

FR-19595 IMG 2020 EMS now supports CentOS 7. This Linux OS version will be used for the new

KVM VEC, providing an EMS server environment completely cost-free of license.

FR-19656 Red Hat RHEL6.7 VEC will now include the Linux Graphical environment to support the

newly added management tools. (Offline configurator; Call trace server).

FR-19533 The WebUI user can now configure password rules for other users.

Release Notes Page 7 of 13 Dialogic Proprietary

Software Changes This section identifies corrected issues related to this release. Current workarounds are provided where applicable.

Defect # Customer

Issue #

Title/Description

IMG-463 IPY00118509 (C170033)

Title:. EMS log files can sometimes not being properly saved.

Description: Errors in the script logic that had caused processes to be stopped or restarted multiple times that could have led to log files not being properly saved.

IMG-458 (C168647)

Title: DSP exception requiring manual reset.

Description: DSP exception due to a DTMF memory leak caused by fax call scenario.

IMG-444 IPY00118476 (C169599)

Title: Incorrect timeslot recorded in call trace on incoming SS7 calls.

Description: Call Tracing issue where actual call information might not have been accurate due to a Span/Channel conversion issue.

IMG-464 IPY00118513

(C169954)

Title: IMG not using correct IP address for outbound call.

Description: When external gateways were defined with the same IP address but different ports, the IMG failed to determine which SIP-IP to use since only the IP address is used to search in the remote entity DB.

IMG-456 IPY00118496 (C169830)

Title: Incorrect IMG 2020 behavior when cancelling a SIP session.

Description: The IMG 2020 was not clearing some calls properly because of a race condition between 200 OK from SIP CANCEL and SIP

INVITE.

IMG-439 IPY00118471 (C169342)

Title: Screening Indicator is always set to Network-provided with

Privacy enabled even though no privacy screening headers are received.

Description: When configuring an Advanced Originating Number translation to set the Screening Indicator to User-provided (0x1), the IMG 2020 kept setting the outgoing SETUP message with the SI set to Network-provided (0x3).

IMG-437 IPY00118469 (C169553)

Title: Duplicate DTMF digits on outgoing legs.

Description: The IMG 2020 could have duplicated DTMF digits on the

outgoing leg when the DTMF 16K sampling rate was set in SDP.

IMG-435 Internal

Title: The WebUI help link on version 2.3 does not work.

Description: On IMG 2020 version 2.3, the WebUI didn’t link to the

correct WebHelp URL address.

IMG-424 IPY00118453 (C169104)

Title: Wrong cause code sent to Radius CDR.

Description: IMG 2020 was sending cause code 10 in Accounting Record while cause code 63 was sent to network.

Release Notes Page 8 of 13 Dialogic Proprietary

Defect # Customer

Issue #

Title/Description

IMG-421 IPY00118452 (C168971)

Title: Remote gateway unreachable alarm not getting cleared after the

IMG 2020 receives a response to the OPTIONS keep alive message.

Description: The IMG 2020 wasn’t clearing the alarm if a 100 TRYING was received before the 200 OK from the keep alive SIP OPTION feature.

IMG-394 IPY00118412 (C168492)

Title: SS7 CICs states not available in WebUI grid after all IMGs were restarted.

Description: Certain SS7 CIC states would not be shown correctly

when a reboot occurs. This has been seen on systems where the primary node ID is not 0.

IMG-393 IPY00118409 (C168462)

Title: SIP-T Entity couldn’t be added to a SS7 signaling standby node.

Description: There were no WebUI choices for a SS7 stack when trying to create SIP-T entity under the secondary node settings.

IMG-391 IPY00118393 (C168163)

Title: Not able to connect to the IMG 2020 Trace Server.

Description: The IMG 2020 was not able to connect to the Trace Server when the control port was not on the same subnet.

IMG-387 Internal

Title: IMG 2020 custom cause code mapping was not working properly.

Description: The custom cause codes configured in WebUI didn’t work as expected for SS7 to SIP calls.

IMG-389 Internal

Title: Potential memory corruption when calling SQL commands in CLI.

Description: Memory stack was getting corrupted when users called SQL commands in CLI and when the SQL return string was larger than 30 characters.

IMG-536 IPY00118605 (C171051)

Title: “SI/PI Priority” not working on IMG 2020.

Description: From “Translation Profiles/Advance Originating Number”

when SI, PI, and Numbering Plan are left empty (No translation), the IMG 2020 could not interwork these parameters.

IMG-527 IPY00118596 (C170705)

Title: Outgoing call legs rejected due to missing transcoding resources

in Gateway license type.

Description: The media transcoding feature check should only apply to SBC license type.

IMG-526 IPY00118595 (C171136)

Title: BN2020 configure in SGW mode cannot pass SCCP-CO traffic.

Description: SCRC did not pass SCCP-CO messages except CR. The condition is now fixed, but the configuration must have the “SSN wildcard to remote AS” enabled under the M3UA_SCCP_AS_Designates object.

Release Notes Page 9 of 13 Dialogic Proprietary

Defect # Customer

Issue #

Title/Description

IMG-502 IPY00118543 (C170438)

Title: Secondary standby node remains offline following both

primary/secondary power off/on tests.

Description: Under specific conditions, the standby node might receive an unknown cold boot status which would be used by the SS7 redundancy process. Then, the state machine that manages the

standby node status cannot process further that which remained in Discovery state and never came back online.

IMG-524 IPY00118591 (C171042)

Title: Wrong trunk group name in Radius CDR.

Description: Long channel group names were not sent correctly in Radius Accounting messages. The name was cut off after 25 characters,

then repeated from the start for the remaining number of characters.

IMG-503 IPY00118550 (C170440)

Title: Preferred active network port at start up does not work as

documented.

Description: The feature was enabling the preferred port when detecting its transition from state Down to UP. Now, it also enables it when the configuration is changed from port 0 to port 1 or vice versa. This situation could happen during the startup process when the IMG

2020 is applying the configuration.

IMG-487 Internal

Title: Reference to call ID 00000 in SIP call trace logs.

Description: Call tracing issue where inbound SIP call-legs displayed the correct call ID, but the same lines on outbound were set to 0.

IMG-488 IPY00118522 (C170194)

Title: tch_updateAMROctetAlignMode printing in call tracing.

Description: Leftover debugging prints.

IMG-521 IPY00118585 (C170588)

Title: SNMP Temperature statistics location.

Description: The statistic string sent by the IMG 2020 missed the

sensor location.

IMG-509 IPY00118571 (C170729)

Title: Remaining dialed number digits not included in SAM, only F termination digit.

Description: For ISUP ETSI v2 calls, SAM messages didn’t include the remaining digits over the first 16 ones used in the IAM.

IMG-494 Internal

Title: IMG 2020 Fault with memory allocation failure.

Description: One of the communication queues had been corrupted

which eventually led the system out of memory.

IMG-370 IPY00118381 (C168084)

Title: SS7 ISUP T7 Timer is nacked because the SS7 has not been

configured before the Raw API is sent.

Description: Configuration issue when Raw API is placed before the actual configuration object is created. This could also happen when the Raw API is intended to 1 specific node where the WebUI is sending the command to all nodes. A new “Node Name” object has been added to

the “File” object to cover for this last situation.

Release Notes Page 10 of 13 Dialogic Proprietary

Defect # Customer

Issue #

Title/Description

IMG-361 IPY00118635 (C167704)

Title: IMG 2020 unknown Major alarm.

Description: The IMG 2020 could send alarms to SNMP client that aren’t decoded by the proprietary MIB. 0x00000608 Media DSP Chip Reset needs to be decoded.

IMG-360 IPY00118360 (C167795)

Title: IMG 2020 node becomes unreachable and faulting multiple.

Description: IMG 2020 node becomes unreachable and faulting multiple times due to a RAW API configuration sent to the wrong node.

IMG-357 IPY00118357 (C166535)

Title: Possible one way audio condition on ingress SIP leg of a call.

Description: Potential one way audio condition could have occured due to VoIP packets not getting received at the DSP layer. “RxPacket=0”

seen in IMG 2020 logs.

IMG-33 IPY00116884 (C150489)

Title: Enabling/Disabling Translation Entry in the WebUI has no effect

on the call flow.

Description: Disabling a digit Translation rule from the WebUI has no effect on the system configuration.

IMG-12 IPY00117905 (C162244)

Title: T.38 /T.30 fax call HDLC errors.

Description: Under certain conditions, the HDLC Frame could have been altered by the IMG 2020 where the wrong T.30 address and control values are transferred.

IMG-11 IPY00117766 (C160753)

Title: Connection issue between EMS server and IMG 2020 nodes.

Description: The IMG 2020 became unresponsive after a user had changed the node configuration using direct node connection instead of via the EMS. An EMS configuration type must prevent direct WebUI

access.

IMG-344 IPY00118336 (C167411)

Title: Using a PTC331 SS7 variant, a backward REL message does not

pass the point code information transparently.

Description: The SS7 Signaling Point Code Information Element (IE) in REL message was not propagated to the GCL component when a backward REL message was received before the call had been answered.

IMG-335 IPY00118284

(C166877)

Title: SS7 outbound call failed due to remote HW block.

Description: IMG 2020 could select a blocked channel for outbound

call leg when the same channel would have been blocked by the far end using “CIC Group Block” message (CGB).

IMG-326 IPY00118310 (C167098)

Title: System fault due to memory corruption.

Description: Memory corruption could have occurred due to a wrong byte count in the messaging buffer when the ISUP CPC received a PAM

message for a SIP-T call.

Release Notes Page 11 of 13 Dialogic Proprietary

Defect # Customer

Issue #

Title/Description

IMG-312 Internal

Title: H.323 Brazil Homologation failure for test cases BCC-TE-S-U07-

06 and BCC-TE-S-U10-06 of the conformance test plan.

Description: Missing mandatory UUIE from ReleaseComplete procedure due to a difference in the test scripts between the Brazil test procedure and the local conformance test script.

IMG-333 IPY00118320 (C167131)

Title: SS7 Signaling Network Congestion alarm not decoded.

Description: The IMG 2020 sents alarm 0x0000010e to a SNMP client as an unknown alarm instead of decoding it as SS7 Signaling Network

Congestion Alarm.

IMG-309 IPY00118278 (C166836)

Title: EMS DB_Sync logs are not being generated after a rollover.

Description: It was possible to have two threads competing at the same time to generate the midnight files rotation. This could have led to unexpected results where a log file would not have been properly created after it was copied/deleted over to the backup directory.

IMG-299 IPY00118245 (C166329)

Title: IMG 2020 Sigtran link Network Appearance does not allow the max 32-bit unsigned integer defined for this parameter.

Description: The maximum number of characters for field NetworkAppearance in WebUI was set to 5 instead of 10.

IMG-346 Internal

Title: Issue with P-Asserted-Identity header handling. The Display name is not propagated to the outgoing leg.

Description: The issue occurred when 2 P-Asserted-Identity lines were

provided and only one of them had the Display name provided. The IMG 2020 wasn’t providing the Display name for both PAID.

IMG-339 IPY00118330

(C167353)

Title: Invalid NodeID reported after loading a configuration.

Description: The problem happened when the Config_History table contained configuration commands that would significantly change the Node system information, like a control Port IP address change. When applying this command after a node restart, the EMS would lose communication with the node and couldn’t assign a valid NodeID. To avoid this situation, the Node’s local configuration must be in sync with

the EMS one. A Push configuration & Reset will fix the situation. Other configuration management features added with this release will also help to avoid the problem.

IMG-318 IPY00118295 (C166840)

Title: IMG 2020 M3UA route not coming into service due to the

“Presume_Available” parameter.

Description: The IMG 2020 WebUI for M3UA routes configuration allows for the Presume_Available parameter to be editable. This parameter cannot be changed once the route is created. The WebUI must prevent this parameter from being edited once the route is

created.

Release Notes Page 12 of 13 Dialogic Proprietary

Defect # Customer

Issue #

Title/Description

IMG-307 Internal

Title: Wrong format presented within the IMG 2020 Events.txt file.

Description: The Events.txt file uses a delimiter that clashed with the alarm’s definition, which also uses the same delimiter. It results in a wrong file presentation format. The Events.txt file now uses the semi-colon delimiter instead.

IMG-287 IPY00118228 (C166087)

Title: IMG 2020 Faults with fault: #c01db007 @01a85320[29230].

Description: The IMG 2020 node can fall into an infinite fault loop when the config_Event table has been increased drastically and the

system takes too much time to load it at startup. The system boot sequence timeouts and invokes another restart. Different fixes have

been integrated to avoid this table to grow indefinitely.

IMG-337 IPY00118326 (C167313)

Title: M3UA Route ID Table got corrupted.

Description: The situation occurs when creating and deleting the route several times. Sometimes, the route deletion procedure could not be completed.

IMG-316 IPY00118294 (C166061)

Title: IMG 2020 not sending CPG for ISDN Progress.

Description: In some SS7 to ISDN calls, the announcement from the ISDN network was not heard on the SS7 side before a call is connected.

IMG-308 IPY00118272 (C166533)

Title: User cannot configure TGRP options in SIP Profile.

Description: WebUI issue where the combo box rule for the pull downs (other than Type) does not contain a root object rule and so it does not

present values for the TGRP object.

IMG-305 IPY00118264 (C166532)

Title: IMG 2020 IP Traffic management limit a maximum of 1024 ports.

Description: IMG 2020 IP Traffic management should be updated to reflect current port density of 2016 VoIP GW channels.

IMG-145 IPY00116760 (C149548)

Title: WebHelp link does not work in WebUI.

Description: The WebUI interface must update the WebHelp link.

IMG-92 Internal

Title: IMG 2020 “dialogic” user account expires after 90 days.

Description: The IMG 2020 WebUI user “dialogic” wasn’t going through the password rule process and had to be continuously

renewed.

IMG-81 Internal

Title: IMG 2020 sends incorrect value in outgoing invite.

Description: The IMG 2020 sends an incorrect value in an outgoing invite (e.g. np=16) if the Incoming IAM contains an ISUP Originating Line Information value greater than 9.

IMG-156 Internal

Title: WebUI display issue with SS7 Link status

Description: WebUI display issue where SS7 Link status shows a value of 6 instead of the associated string “Failed/Inhibit locally”.

Release Notes Page 13 of 13 Dialogic Proprietary

Defect # Customer

Issue #

Title/Description

IMG-123 Internal

Title: Presentation issue when the user is logged out to the WebUI

because of nonactivity.

Description: Upon no activity from the WebUI user for a certain amount of time, the user was logged, out but remained on the same page. Under this condition, the WebUI must bring the user to the login

page.

IMG-101 IPY00117736 (C160578)

Title: IMG 2020 fault (Exception:$DSIExc (line = data addr) line:0x54).

Description: An IMG 2020 fault caused by an uninitialized variable.

IMG-115 IPY00117520 (C158421)

Title: Wrong outbound leg logged by radius CDR.

Description: The IMG 2020 sent wrong, outbound leg information, which was logged by the radius CDR when the call was blocked by IP traffic management.

IMG-457 Internal

Title: SS7 switchover process failure.

Description: A SS7 redundancy issue where an EMS restart occurred after one of the signaling nodes has faulted and restarted. The redundant node remained in discovery mode from the EMS and was never set as Standby.

IMG-217 Internal

Title: “404 Unable to begin a transaction on the CfgDB” received at the WebUI.

Description: The potential issue could have occurred when a database

transaction has not been terminated appropriately.

IMG-311 IPY00118289 (C166939)

Title: SS7 outbound call failed due to remote HW block.

Description: The IMG 2020 processed the CIC unblock (CGU) message correctly from the far end, hence failing the outbound call leg.

IMG-636 Internal

Title: IMG 2020 is adding duplicate vocoder attribute to the CDR buffer

Description: During the call processing, each time a Re-INVITE is received, the IMG 2020 was comparing the vocoder parameters provided into the SDP against the original SDP instead of the last modified one.

IMG-635 301410

Title: The IMG 2020 SS7 Redundancy Manager remained in "discovery" mode after the EMS restarted.

Description: Redundant signaling node remains in Discovery mode when the EMS and signaling node(s) restarted at the same time.

The IMG 2020 SS7 redundancy scheme did not handle the double fault situation. (EMS restarting + Node restarting)