user manual

Chapter 3 – Fax Class 2 Commands
Multi-Tech Systems, Inc. SocketModem MT5634SMIxx Reference Guide (S000263C) 74
T.30 Session Subparameters
Several commands and responses reference T.30 session negotiated parameters. These are described
by a set of common subparameters, which are described in Table 3.5. Optional parameter values are
marked with an asterisk (*).Unspecified parameter values are reserved for future use.
The +FCC [+FDCC], +FIS [+FDIS], and +FCS [+FDCS] compound parameters, described in Parameter
Commands sections, use these session subparameters. On writes, unspecified subparameters are
unchanged.
The +FIS: [+FDIS:], +FCS: [+FDCS:], and +FTC: [+FDTC:] session report responses, described in
T.30 Phase B Negotiation Responses section, also use these subparameters.
For test response, ranges of values are reported for each subparameter, enclosed in parentheses
characters. For example, a modem response to +FCC=? [+FDCC=?] could report:
<CRLF>(0-1),(0-3),(0-4),(0-2),(0),(0),(0),(0-7),(0)<CRLF>
Example: +FIS=0,3,0,2,0,0,0,1,0 is interpreted as follows:
Value Label Description
0 VR 98 dpi vertical resolution
3 BR 9600 bit/s
0 WD 1728 pixels
2 LN unlimited length
0 DF 1-D modified Huffman coding
0 EC no ECM
0 BF no BFT
1 ST 5 ms scan time
0 JP no JPEG