User`s guide

Dialogic
®
System Release 6.0 PCI for Windows
®
Release Update, Rev 62 — January 30, 2008 38
Dialogic Corporation
1.3 Analog Call Transfer Support on Dialogic
®
Springware Boards
With the Service Update, blind and supervised analog call transfers using the Dialogic
®
Global Call API are now supported on Dialogic
®
Springware Boards.
Support for analog call transfer is applicable only to standard POTS (“plain old telephone
service”) line products. Proprietary private branch exchanges (PBXs) or key telephone
systems (KTSs) and their related boards, such as the Dialogic
®
D/42JCT-U and D/82JCT-
U PBX Integration Boards, are excluded from this feature since PBXs and KTSs may
provide proprietary protocols for call transfers.
Aside from the Dialogic
®
PBX Integration Boards, this feature can be used with all other
analog Springware boards that are supported in System Release 6.0 PCI Windows.
The following sections discuss:
• Call Transfer Overview
• Using Global Call with Analog Springware Boards
• Configuring the CDP File
• Documentation
1.3.1 Call Transfer Overview
There are two types of call transfers:
Supervised transfers
The person transferring the call stays on the line, announces the call, and consults
with the party to whom the call is being transferred before the transfer is completed.
Blind transfers
The call is sent without any consultation or announcement by the person transferring
the call. Blind transfers are also known as one-step or unsupervised transfers.
Supervised transfers use the following Global Call API functions:
gc_SetupTransfer( )
Initiates a supervised transfer.
gc_CompleteTransfer( )
Completes a supervised transfer.
gc_SwapHold( )
Switches between the consultation call and the call pending transfer.
Blind transfers use the following Global Call API function:
gc_BlindTransfer( )
Initiates and completes an unsupervised (one-step) transfer.