Cisco Cisco Customer Voice Portal 8.0(1)

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Two B-Channel Transfer (TBCT)

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Ability to differentiate call recovery behavior by incoming DNIS.

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Ability to differentiate call recovery behavior by incoming DNIS and how long the call had
been in Unified CVP prior to failure.

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Ability to differentiate call recovery behavior based on time of day and date.

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Ability to hand off to an auto-attendant type application in the event of some downstream
failure (for example, WAN failure, Unified ICME failure, Unified CVP failure). This
auto-attendant functionality could be CME's BACD, a Unified CVP Standalone call flow
model, a VXML Server application, or a custom-written VXML application.

Installing the Call Survivability Script

To install the Call Survivability script, perform the following steps:

Using the Operations Console, copy all script/prompt files to the gateway.

On the gateway, do the following:

For a Unified CVP Comprehensive call flow model:

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Define two services:

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Add the following parameters:

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Note:  This will cause survivability to be invoked between 8 and 16 seconds for an active
call after a WAN failure. If IOS detects the absence of both RTP and RTCP packets after

Configuration and Administration Guide for Cisco Unified Customer Voice Portal Release 4.1(1)