Appendix C. Status Buffer Messages
SERVICE_NOT_AVAIL
The requested service is not available.
SOURCE NOT ISDN
The incoming calling party is not ISDN (warning only).
TANULL expired
Bonding timer TANULL expired. Received call from
TEMPORARY_FAILURE
The network has temporarily failed, try the call again.
TIMER_EXPIRY
Call control error.
TXADD01 expired
Bonding timer TXADD01 expired.
TXDEQ expired
TXFA1 expired
Bonding timer TXFA1 expired.
TXFA2expired
Bonding timer TXFA2 expired.
TXINIT expired
Bonding timer TXINIT expired; called
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
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