3.2. DTMF Transfer Mode Configuration

In System Release 5.x, the DTMF transfer mode was configurable by setting the value of the PrmDTMFXferMode parameter in the .config file. In System Release 6.0, the DTMF transfer mode is configurable at run time using the Global Call API. The DTMF mode can be specified for all line devices (using the gc_SetConfigData( ) function) or on a per line device basis (using gc_SetUserInfo( ) with the duration parameter set to GC_ALLCALLS).

The GC_PARM_BLK associated with the gc_SetConfigData( ) or gc_SetUserInfo( ) function is used to specify the DTMF modes that are supported. The GC_PARM_BLK must include the following parameter set ID and parameter ID:

• IPSET_DTMF
  • IPPARM_SUPPORT_DTMF_BITMASK which can be one of the following values:
    • IP_DTMF_TYPE_ALPHANUMERIC_DTMF (H.323 only)
    • IP_DTMF_TYPE_INBAND_RTP
    • IP_DTMF_TYPE_RFC_2833

See the Global Call IP Technology User's Guide for more detail.

Click here to contact Telecom Support Resources