ADTRAN Express L128T S User Manual page 145

Appendix A. Loop Status Messages
TDX10 Ready
The ISDN link layers 1 through 3 are up against a TDX10 switch and
ready for calls.
NEC Ready
The ISDN link layers 1 through 3 are up against an NEC switch and
ready for calls.
RINGING
An incoming call is ringing.
B1 AND B2 BEARER CHANNEL STATUS
MESSAGES
64K
Connected at 64K call type.
Audio
Connected at audio call type.
Dialing
Dialing out.
Holding
Connection is on hold.
Idle
No call up.
Speech
Connected at speech call type.
61202070L3-20 Express L128T S/T User Manual A-3