Insofar
as the command ATQ1 is not active
(messages off), the ISDN terminal adapter will
acknowledge input commands and provide messages -
regarding incoming calls or the establishment of
a connection, for example. With the default setting ATV1,
the ISDN terminal adapter returns messages in
plain text (followed by M and a line feed
character). With the command ATV0, the
messages are returned in short form as a digit
(with a leading or concluding M).
V1 |
V0 |
Description |
OK |
0 |
Command line executed |
RING |
2 |
Incoming call |
NO CARRIER |
3 |
No connection established,
connection ended by exchange of remote
station, or inactivity timer elapsed (see
also register S154/S155) |
ERROR |
4 |
Error during command input |
NO DIALTONE |
6 |
No connection to ISDN
exchange or own connection is busy |
BUSY |
7 |
Requested subscriber or
communication paths busy |
CALL SENT |
252 |
Dial number complete, call
being processed |
ALERTING |
253 |
Remote station alerting to
call |
CONNECTING |
254 |
Call answered by remote
station, line protocol being negotiated |
|