AT Commands Modem Terminated
184
3
No Loop Current
10-19
Transmit Phase A & miscellaneous errors
10
Unspecified Phase A error
11
No Answer (T.30 T1 Timeout)
20-39
Transmit Phase B Hang-up Codes
20
Unspecified Transmit Phase B error
21
Remote cannot receive or send
22
COMREC error in transmit Phase B
23
COMREC invalid command received
24
RSPEC error
25
DCS sent three times without response
26
DIS/DTC received 3 times, DCS not recognized
27
Failure to train at 2400 bits/s or +FMINSP
28
RSPREC invalid response received
40-49
Transmit Phase C Hang-up Codes
40
Unspecified Transmit Phase D error
43
TE to TAE data underflow
50-69
Transmit Phase D Hang-up Codes
50
Unspecified Transmit Phase D error
51
RSPREC error
52
No response to MPS repeated 3 times
53
Invalid response to MPS
54
No response to EOP repeated 3 times
55
Invalid response to EOP
56
No response to EOM repeated 3 times
57
Invalid response to EOM
58
Unable to continue after PIN or PIP
70-89
Receive Phase B Hang-up Codes
70
Unspecified Receive Phase B error
71
RSPREC error
72
COMREC error
73
T.30 T2 time out, expected page not received
74
T.30 T1 time out after EOM received
90-99
Receive Phase C Hang-up Codes
90
Unspecified Receive Phase C error
91
Missing EOL after 5 seconds
93
TAE to TE buffer overflow
94
Bas CRC or frame (ECM or BFT modes)
100-119
Receive Phase D Hang-up Codes
100
Unspecified receive Phase D error
101
RSPREC invalid response received
102
COMREC invalid response received
103
Unable to continue after PIN or PIP