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Unified Dynamic Conferencing with DTMF Clamping

Unified Dynamic Conferencing with DTMF Clamping is a unified conference that prevents DTMF echo. DTMF echo causes false DTMF indications on conference legs. This feature enables users to provide DTMF digit receivers on each conference leg without one conference participant inadvertently controlling another participant’s conference parameters.

This conferencing type is like Unified Dynamic Conferencing except that on the DSP-ONE card, a DSP chip supports 24 channels of DTMF-clamped conferencing.

The following conference types behave the same way as Unified Dynamic with DTMF Clamping:

• Unified Dynamic, µ-law Broadcast with DTMF Clamping

• Unified Dynamic, A-law Broadcast with DTMF Clamping

Please refer to the following API messages to implement this feature:

• DSP SIMM Configure (0x00C0):
Additional DSP Function Type

• Conference Create (0x004B):
Additional DTMF-Clamped Conference

• Card Status Report (0x00A6):
Additional Function Type

Digital Signal Processor