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Chapter 5 – AT Commands, S-Registers, and Result Codes
Multi-Tech Systems, Inc. SocketModem MT5600SMI Developer’s Guide 67
55 0-FFFF Received characters lost (data overrun errors to DTE)
56 0-FFFFFFFF Transmit I- Frame count, if error control protocol running
57 0-FFFFFFFF Received I-Frame count, if error control protocol running
58 0-FFFF Transmit I-Frame error count, if error control protocol running
59 0-FFFF Received I- Frame error count, if error control protocol running
60 Table 5-12 Termination Cause
61 0-FF Call Waiting event count
Table 5-5. Call Setup Result Codes
Code Definition
0 No previous call (modem log has been cleared since any previous calls)
1 No dial tone detected
2 Reorder signal detected, network busy
3 Busy signal detected
4 No recognized signal detected (e.g., no signal, or nothing recognizable)
5 Voice detected * if this is a voice modem (e.g., V.253) operating in voice mode (e.g.,
+FCLASS=8.0)
7 Data Answering signal detected (e.g., V.25 ANS, V.8 ANSam)
8 Data Calling signal detected (e.g., V.25 CT, V.8 CI)
9 Fax Answering signal detected (e.g., T.30 CED, DIS)
A Fax Calling signal detected (e.g., T.30 CNG)
B V.8bis signal detected
Table 5-6. Multimedia Modes
Code Definition
0 Data Only
1 Fax Only
2 Voice
9 Video-telephony, H.324
A Other V.80 call
Table 5-7. DTE-DCE modes
Code Definition
0 Async data
1 V.80 transparent synchronous mode
2 V.80 framed synchronous mode
Table 5-8. V.34 INFO bit report
Bits Source bits Definition
31-30 INFO0 bit 20; 0
20-29 INFOc bits 79-88
16-19 INFOc bits 26-29 or 35-38 or 44- 47 or 53-56- or 62-65 or 71-74
Pre-emphasis field, selected by the symbol rate chosen
12-15 INFOa bits 26-29
10-11 MP bit 50; 0
0-9 INFOa bits 40-49
Table 5-9. gstnModulationSchemeActive from 3.7.2/V.58
Value Description
0 V.17 (G3 Fax call)
1 V.21
2 V.22
3 V.22bis
4 V.23 Constant Carrier (1200/75)
8 V.27ter (G3 Fax call)
9 V.29 HD (G3 Fax call)
A V.32
B V.32bis
C V.34
E V.90 and V.92
81 56K
84 Bell 212A
85 Bell 103