Interface names assigned by the CTCM device driver
When a CTCM group device is set online, the CTCM device driver automatically assigns an interface name to it. The interface name depends on the protocol.
If the protocol is set to 4, you get an MPC connection
and the interface names are of the form mpc<n>.
If the protocol is set to 0, 1,
or 3, you get a CTC connection and the interface
name is of the form ctc<n>.
<n> is an integer that identifies the device. When the first device is set online it is assigned 0, the second is assigned 1, the third 2, and so on. The devices are counted separately for CTC and MPC.