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Modem response codes
The following table lists the basic codes that the modem sends to your computer in
response to the commands you type. They are called response codes.
Table 5: Basic Response codes
Digit code
Word code
Meaning
0
OK
Command was carried out without error
1
Connect
Connected at 300 bits per second (bps)
2
Ring
Ringing signal detected
3
No carrier
Carrier is lost or not heard
4
Error
Error in the command line
Invalid command
Command line exceeds buffer
Invalid character format
6
No dial tone
No dial tone during the time-out period
7
Busy
The line being called is busy
8
No answer
The line being called did not answer within the time-out
period
11
Connect xxxx
Connected at 2400 bps
24
Delayed
Dialing delayed
32
Blacklisted
Number is blacklisted
33
Fax
Fax connection
35
Data
Data connection
+F4
+FC error
Fax error
B-12 IBM Personal Computer User Guide