Mitel SUPERSET 420 User's Guide download pdf (Page 49)

4. PBX Systems

Completing the Transfer

To complete a call (supervised or blind), press the transfer key again with

dx_dial(&), where & acts as a key press of the transfer key. The application

must handle the on-hook state after completing the transfer.

Aborting the Transfer

A transferred call can be aborted at any time (prior to completing the transfer)

by pressing the appropriate appearance key where the original call resides.

The application can perform this only in a supervised transfer mode. For

example, if the original call resided on the first appearance (Feature Key 00),

dialing

dx_dial(<ESC>KA) will bring the original caller back to an active

state.

Example

An application answers a call and plays a greeting message prompting the

caller to enter the extension they wish to reach (the caller enters 221). Using

the

dx_dial( ) function with the dial string (&,221), the application attempts to

transfer (supervised) the call to extension 221. Call progress analysis is used

to determine if extension 221 is answered, busy, or there is no answer.

extension 221 answers, the application needs to use

dx_dial( ) to press &

again to complete the transfer and hang up after the transfer is complete.

If the

extension is busy or not answered, the application reconnects to the incoming

call and plays a message asking the caller to choose between accessing voice

mail or transferring to the operator.

4.2. Siemens ROLM PBX

The ROLM product family actually includes three generations of ROLM and

related PBXs:

1. The original ROLM

2. IBM ROLM 9751 series

3. Siemens Hicom* 300 with the appropriate interface cards

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Mitel SUPERSET 420 User's Guide Page 49