1.19. B Channel Status

When using DM3 boards, the initial B channel state (in service or out of service) is controlled by a CHP parameter (parameter 0x1311) in the CONFIG file. By default, all channels are out of service when a system is initialized. Thereafter, when the application issues gc_WaitCall( ) the channel (line device) is placed into service. If gc_ResetLineDev( ) is subsequently issued, the channel is placed out of service until the application issues gc_WaitCall( ) again.

Also, on channel devices, if gc_WaitCall( ) is not issued but gc_MakeCall( ) is issued, the channel is placed into service for the duration of the call. Once the call is released, the channel is once again out of service.

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