Dialogic 6.2 - Manual (Page 267)

General Information
November 2009 267
the B-channel number on that trunk (also 0-based). Some of the data
structures associated with the message will have a specific field for
specifying the B-channel, which must also be set.
Enabling a channel and selecting the protocol to run is done through
message L4L3mENABLE_CAS, while message L4L3mDISABLE_
CAS is used to disable a channel. It is possible to have different
channels on the same T1 trunk running different protocols. Once a
DS0 channel is configured to run a LEC protocol most processing
specific to that protocol, is handled by the module. Channels are
numbered 0-(N-1) for all line types (T1, E1 and analog) and
protocols.
Dialogic supports the most common protocols. Contact Dialogic to
make requests for ones not known to be officially supported. See
Getting Technical Support on page 21 for contact information.