2 ; Voice over Frame Relay (Adtran style)
12 ; Lines for which we are the user termination. They accept incoming
13 ; and outgoing calls. We use the default context on the first 8 lines
14 ; used by internal phones.
25 ; Calls on 16 and 17 come from the outside world, so they get
26 ; a little bit special treatment
31 ; Next we have lines which we only accept calls on, and typically
32 ; do not send outgoing calls on (i.e. these are where we are the
33 ; network termination)