CHANNEL_INFO_ST
- vpack
- Number of the physical digital trunk.
- channel
- Number of the physical channel assigned to the channel process. This
field will be set to 0 for music channels.
- music_channel
- The number of a music channel on the pack specified in vpack.
This field is used only when channel is set to 0 indicating a music
channel. The value of this field must be in the range 1 to MAX_MUSIC_CHANNELS_PER_PACK.