Technical information

IBM United States Software Announcement
209-272
IBM is a registered trademark of International Business Machines Corporation
3
Planned availability date
September 25, 2009 (electronic software delivery)
October 30, 2009 (media and documentation)
Description
VoIP telephony using Session Initiation Protocol
With WebSphere Voice Response for AIX V6.1, you can connect to a VoIP network
without a hardware adapter card.
VoIP features include:
• Session Initiation Protocol (SIP) support for VoIP signaling:
– TCP or User Datagram Protocol (UDP) compliant to industry standard Request
For Comment (RFC) 3261 and other relevant SIP RFCs
– Transmitted and received through the system Ethernet port (using the AIX TCP/
IP stack)
– Connections to soft phones, hard phones, and proxies that conform to
supported SIP standards
• Real Time Protocol support for VoIP media:
– Support for Real Time Protocol/Real Time Control Protocol (RTP/RTCP), using
UDP compliant to industry standard RFC 1889
– RTP/RTCP media transmitted and received through the system Ethernet port
(using the AIX TCP/IP stack)
– Codec for uncompressed G.711 only (A-law and mu-law)
– Dual Tone Multi-Frequency (DTMF) send/receive keys using audio tones or RTP
payload packets that are RFC 2833 (Telephone Event) compliant
• Application support:
– Existing and new state table, Java, VoiceXML, and CCXML applications can be
used with SIP.
– Many applications require no change. Others can be extended to exploit SIP
capabilities.
– The tagged string interface between SIP and applications allows access to
SIP headers (including diversion, from, to, request, alang, final response, and
subject header (on bye)).
• Inbound and outbound calls:
– Blind and supervised attended call transfer
– Tromboning between SIP channels on same adapter type
– Invite again from remote party, allowing mid-call changes to session
characteristics
– Blind notify for Message Waiting Indication (MWI) control
Note:WebSphere VR V6.1 retains a numeric numbering plan for subscriber profiles
and called/calling numbers. Therefore, some solutions such as Unified Messaging
may require an SIP proxy or gateway with a numeric numbering plan to provide
called/calling number information.
Logical partitioning: WebSphere VR V6.1 supports the dynamic logical partitioning
(DLPAR) environment on IBM AIX V6.1 with IBM Power Systems servers. WebSphere
VR V6.1 may be installed in a maximum of two LPARs running in the same server.
Micro-Partitioning
TM
is not supported. It is recommended that each WebSphere VR
V6.1 production system instance be assigned a minimum of two processors for
each LPAR. Virtualization is not supported. The IBM Digital Trunk Telephony Adapter