Synopsis:

       SMfeedunlisten(chan_id,chan_type)

Arguments:

       chan_id                – The channel to stop listening to the feed

       chan_type                - The channel type (TYPE_VOX, TYPE_VMP, TYPE_TDM)

Description:    This function stops the channel specified by the arguments chan_id and chan_type from listening to a datafeeds previously connected through a SMfeedlisten() call.

The specified channels can be one of the following types as defined in aculab.inc:

const TYPE_VOX=0;

const TYPE_VMP=1;

const TYPE_TDM=2;

Returns: 0 upon success or a negative error code.