ADTRAN Express 3010 Manual page 101

Appendix C. Status Buffer Messages
TXINIT expired
Bonding timer TXINIT expired; called non-BONDING equipment.
UNASSIGNED_NUMBER
The phone number dialed does not exist.
Unknown AT cmd
User issued an unknown AT command.
USER_ALERT_NO_ANS
Ringing call is not answered.
USER_BUSY
The dialed number is busy.
V120 connected
The V.120 rate adaption successfully connected to the far-end unit.
V120 Timeout
V.120 negotiation failed.
WRONG_MESSAGE
Call control error.
WRONG_MSG_FOR_STATE
Call control error.
61200239L1-20 Express 3010/3110 User Manual C-13