Cisco Cisco Unified Customer Voice Portal 11.0(1)

For example, to use the hookflash feature to transfer the call to the number “4441234” with a
500- millisecond pause after the hookflash, configure the Unified ICME label as

.

Using Takeback and Transfer in VoiceXML Scripts

Unified CVP provides the following takeback and transfer methods that you can invoke from
a VoiceXML script:

•

Two B-Channel Transfer (TBCT) - A call transfer standard for ISDN interfaces. This feature
enables a Cisco voice gateway to request an NI-2 switch to directly connect two independent
calls. The two calls can be served by the same PRI or by two different PRIs on the gateway.

•

Hookflash Relay - A brief interruption in the loop current that the originating call entity (PBX
or Public Switch Telephone Network switch) does not interpret as a call disconnect. Instead,
once the PBX or Public Switch Telephone Network switch senses the hookflash, it puts the
current call on hold and provides a secondary dial tone, which allows Unified CVP to transfer
the caller to another destination.

Configuring Two B-Channel Transfer (TBCT)

To configure Two B-Channel Transfer (TBCT) for use with Unified CVP from a VoiceXML
script, follow this procedure:

Configure the originating gateway for TBCT call transfer, by following the instructions in
"

."

Locate the following files on the VXML Server and copy them to flash memory on the gateway,
using the tftp command:

en_error.wav

en_holdmusic.wav

en_pleasewait.wav

survivability.tcl

CVPSelfService.tcl

CVPSelfServiceBootstrap.vxml

Add the following lines to the gateway:

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