Netopia 435 Reference Manual page 253

E-10 Netopia ISDN Router Reference Guide
Cause No. 102: recovery on timer expiry. This cause indicates
that a procedure has been initiated by the expiry of a timer in
association with Q.931 error handling procedures.
Cause No. 111: protocol error, unspecified. This cause is used to
report a protocol error event only when no other cause in the
protocol error class applies.
Cause No. 127: interworking, unspecified. This cause indicates
there has been interworking with a network that does not provide
causes for actions it takes; thus, the precise cause for a message
being sent cannot be ascertained.