US Robotics 56K USB Modem User Manual page 69

Table 139. HSC Codes(Continued)
HSC Code
20
21
22
23
24
25
26
27
28
40—4F
40
41
42
43
44
45
46
47
50—6F
Values
50
51
52
53
54
55
56
57
58
70—8F
70
71
72
73
74
90—9F
90
91
92
93
A0—BF
A0
A1
A2
A3
C0—DF
E0-FF
Hangup Cause Description
Unspecified transmit Phase B error
Remote cannot receive or send
COMREC error in transmit Phase B
COMREC invalid command received
RSPREC error
DCS sent three times without response
DIS/DTC received 3 times; DCS not recognized
Failure to train at 2400 bit/s or +FMS value
RSPREC invalid response received
Transmit Phase C hangup codes
Unspecified transmit Phase C error
Unspecified image format error
Image conversion error
DTE to DCE data underflow
Unrecognized transparent data command
Image error, line length wrong
Image error, page length wrong
Image error, wrong compression code
Transmit Phase D hangup codes
Hangup cause description
Unspecified transmit Phase D error
RSPREC error
No response to MPS repeated 3 times
Invalid response to MPS
No response to EOP repeated 3 times
Invalid response to EOP
No response to EOM repeated 3 times
Invalid response to EOM
Unable to continue after PIN or PIP
Receive Phase B hangup codes
Unspecified receive Phase B error
RSPREC error
COMREC error
T.30 T2 time-out, expected page not received
T.30 T1 time-out after EOM received
Receive Phase C hangup codes
Unspecified receive Phase C error
Missing EOL after 5 seconds (3.2/T.4)
Bad CRC or frame (ECM mode)
DCE to DTE buffer overflow
Receive Phase D hangup codes
Unspecified receive Phase D errors
RSPREC invalid response received
COMREC invalid response received
Unable to continue after PIN or PIP
Reserved for future standardization
Reserved for manufacturer-specific use
56K USB Modem
User Guide
Command Reference - 63