Transfer Capabilities

A call can be transferred in several ways. The sections that follow include definitions from the VXML 2.0 and VXML 2.1 specifications related to the types of transfers supported on the Converged Services Platform (CSP).

Transfer Element (as defined in VXML 2.0)

The <transfer> element directs the interpreter to connect the caller to another entity (for example, telephone line or another voice application). During the transfer operation, the current interpreter session is suspended.

An implementation platform can initiate a transfer in several ways, including: bridge, blind, network-based redirect (sometimes referred to as take back and transfer) and switchhook transfer.

The <transfer> element is optional, though platforms should support it. Platforms that support <transfer> may support bridge or blind transfer types, or both. Platforms that support either type of transfer may optionally support barge-in input modes of DTMF, speech recognition, or both, during the call transfer to drop the far-end. Blind transfer attempts can only be cancelled up to the point the outgoing call begins.