Technical information

IBM United States Software Announcement
209-272
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• The WebSphere VR signaling process can pass extra protocol data, such as ISDN
and SS7 information elements and SIP header information (in tags using ECMA
script) on incoming calls, to CCXML applications.
• The WebSphere VR signaling process can present calls in alerting to CCXML
applications where the protocol permits, enabling playing of announcement
messages to the caller without the caller being connected and the caller being
charged (including early media support).
• CCXML enables specification of a channel group on an outbound call to select
which protocol to make the outbound call.
• CCXML is responsible for call handling within an application and can connect to
CTI products.
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• Basic HTTP server (see Appendix K, W3C CCXML working draft, January 2007) is
included to facilitate external interaction and control.
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Support is available for CTI products for use with contact centers, call center applications,
and telecommunication solutions.
Limitations
Some tags, for example, "conference", which have no functional support in
WebSphere VR V6.1, return no-ops. For more information, refer to WebSphere Voice
Response for AIX: Using the CCXML Browser (SC34-7092).
Echo cancellation
Echo cancellation on the DTTA adapter delivers capability and reduces cost, without
the need for external echo canceller boxes. Features include:
• Removes the mandatory requirement for an initial force play convergence prompt,
although this is still recommended for optimum performance
• Delivers improved echo cancellation during the call on account of the continuous
convergence up to 32 millisecond echo delays
• Removes the possibility of failure of initial calibration due to excessive echo
(previously, echo cancellation within the call was unusable if the initial calibration
failed)
• Delivers improved overall echo cancellation (smaller echo residual signal means
improved voice recognition and more reliable barge-in)
Scalability of VoiceXML to 480 channels with DTTA adapters
• Simple VoiceXML V2.0/2.1 applications with no speech recognition or text to
speech can be supported on a single server with a minimum of two 3 GHz
processors, or the equivalent.
• More complex applications with speech recognition or text to speech can be
supported with 480 channels of telephony on a single server but with VoiceXML
V2.0/2.1 browsers distributed across other servers.
Migration
If you are migrating systems that are available 24 x 7 from earlier releases of
WebSphere VR to WebSphere VR V6.1, they must first be upgraded to AIX V6.1
(TL03/SP1) to minimize downtime. All WebSphere VR V4.2.3 function that can be
migrated to WebSphere VR 6.1 is supported under AIX V6.1 TL03/SP1, provided that
WebSphere VR 4.2.3 is at current PTF levels before any AIX upgrade. Refer to
http://www.ibm.com/support/docview.wss?uid=swg21372074
The next steps are then to save the IVR environment, uninstall WebSphere V4.2,
install WebSphere VR V6.1, and restore the IVR environment.
PCI fax card
The Brooktrout fax card (TR114), withdrawn from marketing by Brooktrout, is not
hardware-compatible with current Power System servers. It is replaced with a new
Brooktrout card (TR1034) with similar function. WebSphere VR V6.1 supports one