Avaya Aura Communication Manager

Latest Release: 10.2 (December 2023)

Release 6.3

Avaya Aura Communication Manager Release 6.3 was made generally available in May 2013; Service Pack 2 was issued October 2013 as part of Avaya Aura 6.2 Feature Pack 3; Service Pack 6 was issued June 2014 as part of Avaya Aura 6.2 Feature Pack 4; Service Packs and were issued in March 2017. This is NOT the latest release of Communication Manager; it is recommended that the latest release be used for new development.

Important Effective July 9, 2018, Avaya is no longer providing support for Avaya Aura Communication Manager 6.3 -- including all previous releases in the 6.x series. Additional information can be found here here. For all new development, Avaya recommends that developers use the latest Communication Manager release.

New in this Release

Release 6.3.111

Communication Manager 6.3.111 introduces updated SNMP functionality. Existing applications that process SNMP information from earlier releases will not work with this or higher releases, and will require updating to use the new MIB structure. Learn more

Avaya Aura 6.2 Feature Pack 4 (Release 6.3.6)

With the introduction of 21-digit dial plan support and other enhanced features in Avaya Aura 6.2 Feature Pack 4, DevConnect members are encouraged to enhance and update their applications for Communication Manager 6.3.6 and other related Avaya Aura product releases. DevConnect Technology Partners are strongly encouraged to resubmit current solutions for formal Compliance Testing.

The Communication Manager 6.3.6 Feature Pack release includes the following new features:

  • Support for increase in number of digits in call logs
    Communication Manager displays up to 21 digits (increased from 17) of the calling-party number on a DCP, H.323, or SIP endpoint. Endpoints store all 21 digits in the missed call log or the answered call log, as appropriate.
  • T.38 Fax during audio
    With the T.38 fax during audio feature, Communication Manager supports the transition of an existing SIP audio call to a fax call.
  • SIP undelivered call notification
    The SIP undelivered call notification feature provides a notification about an undelivered call to the endpoint.
  • Limit Number of Concurrent Calls for SIP endpoints
    The Limit Number of Concurrent Calls (LNCC) feature causes a multi-call appearance SIP endpoint to behave as a single line appearance endpoint.

For details of all new the features and enhancements in Communication Manager 6.3.6, see Chapter 3 of What's New in Avaya Aura Release 6.2 Feature Pack 4, available under the Downloads - Release Information tab.

Release Release 6.3

The initial Commuication Manager 6.3 release included the following new features:

  • IPC Multiple Call Forwarding
    With the IPC Multiple Call Forwarding feature, re-routed or forwarded-switched calls use the call coverage path of the diverted-to party.
  • Increase in Coverage Answer Group capacities
    Communication Manager supports 33,000 coverage answer group (CAG) entries, 12,000 concurrent CAG calls, and 1,500 CAGs.
  • Increase in Locations and Network Regions
    Communication Manager now supports a maximum of 2,000 locations and networks regions.
  • Increase in Maximum Simultaneous Calls Being Classified
    The system can make up to 1,200 switch classified calls simultaneously.
  • Increase Port Network media resources
    Communication Manager supports 32,767 media processing channels for port networks.
  • Multi-Device Access
    With the Multi-Device Access (MDA) feature, a SIP user can register more than one SIP device with a single extension.
  • SIP Direct Media enhancements
  • SIP Dual Mode
    With the SIP Dual Mode feature, the dual mode device can use the EC500 feature as well as the Wi-Fi and cellular networks to receive calls.
  • Fax over IP
    With the Fax over IP feature, enterprise networks interoperate with PSTN networks to transfer fax messages over IP.
  • Simultaneous Communication Manager administration session logins
  • V.150.1 Modem-over-IP
    With the Modem-over-IP feature, secure terminals establish a secured connection over SIP and H.323 trunks and the Avaya proprietary Inter-gateway Connections (IGCs).
  • Dial Plan Transparency
    Communication Manager-DPT is the traditional form of the dial plan transparency feature that provides call continuation services during a network outage.


Communication Manager 6.3.x can run on the following servers:

  • S8300D
  • S8510
  • S8800
  • HP ProLiant DL360 G7
  • Dell™ PowerEdge™ R610

Communication Manager 6.3.x provides native support for the following telephones:

  • 9400 series digital telephones: 9404 and 9408
  • 9600 series H.323 and SIP deskphones: 9608SIP, 9611SIP, 9621SIP, 9641SIP, 9608SIPCC, 9611SIPCC, 9621SIPCC, 9641SIPCC, 9608, 9611, 9621, and 9641

Release history

End of Support Earlier Releases (view notice)

Release Information

Product Overview

Additional documentation for Communication Manager Release 6.3 is available for download from the Avaya Support web site: