User`s guide

Dialogic

System Release 6.0 PCI for Windows

Release Update, Rev 62 — January 30, 2008 94

Dialogic Corporation

For features specific to E1 (R2) technology, see the following documents:

• Dialogic

Global Call E1/T1 CAS/R2 Technology Guide

• Dialogic

Global Call Country Dependent Parameters (CDP) for PDK Protocols

Configuration Guide

1.28 Runtime Control of Double Answer for R2MF

With this Service Update, a connection method called double answer is now supported for

rejecting collect calls on a call-by-call basis.

1.28.1 Feature Description

Currently, double answer signaling is statically enabled or disabled by setting the

CDP_DOUBLE_ANSWER_FLAG parameter in the CDP file. However, this setting applies

to all the calls on the channels and cannot be controlled on a call-by-call basis.

With this new feature, double answer can be triggered on a call-by-call basis by issuing

gc_AnswerCall( ) with the number of rings ORed with a new define, GC_DBL_ANSWER

(0x100).

Notes:1. The double answer feature must be disabled (disabled by default) in the CDP file. If the

double answer feature is enabled by setting the CDP_DOUBLE_ANSWER_FLAG

parameter in the CDP file, then there will be no application control of this feature on a

call-by-call basis (this feature will always be triggered).

2. If gc_AnswerCall( ) is issued with the number of rings ORed with GC_DBL_ANSWER

on a protocol that does not support double answer functionality, there will be no error

reported as there is no range checking being done in the PDK protocols for the number

of rings. The expected behavior is that while the inbound side is busy generating the

ring back tone (>= 256 rings), the remote side will time out and the call will eventually

get dropped.

1.28.2 Supported Boards

DM3

The following Dialogic

DM3 Boards support this feature:

• Dialogic

DM/V-A Media Boards

• Dialogic

DM/V-B Media Boards

Springware

The following Dialogic

Springware Boards support this feature:

• Dialogic

D/300JCT-E1 Media Boards

• Dialogic

D/600JCT-1E1 Media Boards