Specifications
Index 
Multi-Tech Systems, Inc. SocketModem MT5600SMI/MT5656SMI Reference Guide (S000306B)  114 
+FTH – Transmit Data with HDLC Framing ...............68 
+FTM – Transmit Facsimile.........................................67 
+FTS – Receive Silence ...............................................67 
+FTS – Transmit Silence..............................................66 
fax control reception .........................................................64 
fax control transmission....................................................63 
fax data reception..............................................................65 
fax data transmission ........................................................65 
Fax double escape character replacement 
+FDD ...........................................................................71 
Fax DTE inactivity timeout parameter +FIT ....................71 
Fax fixed DTE rate parameter +FPR ................................72 
Fax flow control parameter +FLO ....................................73 
fax I/O processing.............................................................62 
fax origination...................................................................63 
Fax receive data with HDLC framing command +FRH ...69 
Fax Receive Facsimile +FRM ..........................................68 
Fax Receive Silence +FRS ...............................................67 
fax request manufacturer identification parameter +FMI?72 
Fax request model identification parameter +FMM?........72 
Fax request revision identification parameter +FMR?......72 
Fax Transmit Data with HDLC Framing +FTH................68 
Fax Transmit Facsimile +FTM .........................................67 
Fax transmit silence command +FTS................................66 
fixed DTE rate command +IPR ........................................14 
Flash Dial Modifier Timer - S29.......................................54 
flow control - S39 .............................................................55 
flow control command &K ...............................................13 
force full startup procedure on next connection command 
+QCPC.........................................................................50 
G 
General 
Bit Mapped Option Status - S14...................................52 
H 
Hangup delay S10.............................................................52 
I 
identification command I....................................................6 
initial cellular power level setting command @M ............45 
Initialization strings ............................................................4 
initiate modem-on-hold command +PMHR......................48 
L 
LAPM failure control - S36 ..............................................55 
last call status report command #UD ................................40 
leased line operation command &L ..................................45 
Line feed character S4 ......................................................51 
load flash memory command **.........................................9 
local analog loopback test command &T............................8 
M 
MNP extended services command -K...............................34 
modem-on-hold enable command +PMH.........................47 
modem-on-hold timer command +PMHTR......................48 
modulation reporting control command +MR ..................28 
modulation selection command +MS ...............................26 
O 
Online command mode ...................................................... 4 
operating mode command \N ............................................. 6 
P 
PCM upstream ignore command +PIG ............................ 49 
Phase 1 and Phase 2 control command +PQC.................. 49 
plug and plag vendor ID and product number command %8
....................................................................................... 9 
plug and play serial number command %7......................... 8 
PSTN transmit attenuation level - S91 ............................. 57 
Q 
quiet result code control command Q............................... 11 
R 
report line signal level command %L............................... 22 
report line signal quality command %Q ........................... 22 
report retrieved with Caller ID command +VRID.............. 6 
Report Syntax command +MCR ...................................... 28 
Report Syntax command +MRR ...................................... 28 
report the current error control command +ER ................ 32 
request complete capabilities command +GCAP ............... 7 
request model identification command +GMM ................. 7 
request modem manufacturer command +GMI.................. 7 
request revision identification command +GMR................ 7 
restore factory default configuration (profile) command &F
....................................................................................... 7 
result code form command V ........................................... 11 
Result codes ................................................................. 4, 59 
return to on-line data mode command O .......................... 18 
Ringback Goes Away Timer +VRA............................... 107 
Ringback Never Appeared Timer +VRN ....................... 107 
Rings S0, setting number of ............................................. 51 
RLSD (DCD) option command &C................................. 13 
RTS to CTS Delay - S26.................................................. 53 
RTS/CTS option command &R........................................ 14 
S 
Select Bell or CCITT communication standard B............ 29 
Select DTE/Modem Interface Rate +VPR...................... 111 
select Fax Class 1 command +FCLASS=1....................... 66 
select Fax Class 1.0 command +FCLASS=1.0................. 66 
select guard tone command &G ....................................... 19 
select pulse dial make/break ratio command &P.............. 19 
select the active service class command +FCLASS ........... 5 
Select Voice Mode +FCLASS=8 .................................. 100 
selective reject command +ESR....................................... 31 
selects µ-Law or A-Law codec type command %U ......... 29 
Send Voice Tone(s) +VTS ............................................. 101 
Service Class 2 parameters............................................... 91 
Set pulse dial default command P .................................... 17 
set telephony extension command -STE .......................... 23 
Set tone dial default command T...................................... 17 
Shielded Codes Sent to the DTE Table ............................ 98 
Shielded Codes Sent to the Modem Table........................ 99 
Silence Detection +VSD ................................................ 108 
single line connect message enable command \V............. 22 
Sleep Inactivity Timer...................................................... 53 
Soft reset and restore profile command Z........................... 5 










