Making two-channel call transfers (tromboning) – Dialogic 6.2 User Manual

Page 190

Making Two-Channel Call Transfers (Tromboning)

November 2009

190

Making Two-Channel Call Transfers (Tromboning)

This section provides information about creating a two-channel call

transfer (trombone call transfer).

A two-channel call transfer occurs when an application connects a

calling party to a called party with a full duplex connection, while

maintaining control of both calls. For some applications, this method

of transfer provides redundancy with no added benefits. However,

for applications that require monitoring or functionality not provided

by the caller and called resources, this method supports the

additional functionality. The Bfv API manages two-channel transfer

by transferring an existing call to another channel and becoming a

link in the network rather than an end-point for either channel.

An application might use this method of call transfer to monitor or

record the calls or to perform an activity such as speech recognition

during the call.

When configuring your module for two channel call transfer activities,
establish a maximum of 5 channels per DSP configuration.

The section contains the following: