Specifications
Index 
Multi-Tech Systems, Inc. SocketModem MT5600SMI/MT5656SMI Reference Guide (S000306B)  115 
speaker control command M.............................................19 
speaker volume command L .............................................19 
S-registers .........................................................................51 
S0 – Sets Number of Rings ..........................................51 
S1 – Ring Counter........................................................51 
S10 – Hang up Delay....................................................52 
S11 – DTMF Tine Duration .........................................52 
S11-20 - Reserved ........................................................52 
S12 – Escape Prompt Delay .........................................52 
S14 – Bit Map Option Status -......................................52 
S16 – Test ,Mode Bit Mapped Option Status ...............52 
S2 – Escape Character..................................................51 
S21 – V.24 General Option Status................................53 
S210 – V.34 Symbol Rate ............................................58 
S22 – Speaker/Results Option Status ...........................53 
S23 – General Bit Mapped Option Status.....................53 
S24 – Sleep Inactivity Timer........................................53 
S25 – Delay to DTR OFF.............................................53 
S26 – RTS to CTS Delay..............................................53 
S27 – General Bit Mapped Option Status.....................54 
S28 – General Bit Mapped Option Status.....................54 
S29 – Flash Dial Modifier Timer .................................54 
S3 Carriage Return .......................................................51 
S30 – Disconnect Inactivity Timer...............................54 
S31 – General Bit Mapped Options Status...................54 
S36 – LAPM Failure Control .......................................55 
S38 – Forced Hang up ..................................................55 
S39 – Flow Control ......................................................55 
S4 – Line Feed Character .............................................51 
S40 – Command Options..............................................55 
S41 – Command Options..............................................56 
S46 – Data Compression Control .................................56 
S48 – V.42 Negotiation Control...................................56 
S5 - Backspace .............................................................51 
S6 – Wait Time Before Dialing....................................51 
S7 – Wait Time Before Carrier, Silence or Dial Tone..51 
S8 – Pause Time for Dial Delay ...................................51 
S86 – Call Failure Indication........................................57 
S9 – Carrier Detect Response Time..............................52 
S91 – PSTN Transmit Attenuation Level.....................57 
S95 – Extended Result Codes Control..........................57 
Start Modem Receive (Record) +VRX...........................101 
Start Modem Transmit (Playback) +VTX.......................102 
status of command options - S27 ......................................54 
store current configuration command &W..........................8 
store telephone number command &Z................................8 
T 
Test Mode 
Bit Map Status - S16.................................................... 52 
transmit break to remote command \B ............................. 33 
U 
use short sequence command +PSS ................................. 50 
V 
V.24 general option status................................................ 53 
V.34 symbol rates - S210 ................................................. 58 
V.42 Negotiation Control - S48........................................ 56 
V.44 data compression select command +DS44 .............. 35 
V.8 and V.8bis operation control command +A8E .......... 38 
V.92 modem-on-hold hook flash command +PMHF ....... 49 
Voice commands 
+FCLASS=8 – Select Voice Mode............................ 100 
+VDR – Distinctive Ring........................................... 110 
+VDT – Control Tone Cadence Reporting ................ 111 
+VGR – Voice Gain Receive..................................... 102 
+VGT – Voice Gain Transmit ................................... 103 
+VIP – Voice Initialize all Parameters....................... 101 
+VIT – Voice Inactivity Timer .................................. 103 
+VLS – Analog Source/Destination Selection........... 104 
+VNH – Automatic Hang up Control ........................ 100 
+VPR – Select DTE/Modem Interface Rate .............. 111 
+VRA – Ringback Goes Away Timer ....................... 107 
+VRN – Ringback Never Appeared Timer................ 107 
+VRX – Start Modem Receive (Record) ................... 101 
+VSD – Silence Detection......................................... 108 
+VSM – Compression Method Selection................... 109 
+VTD – Beep Tone Duration Timer.......................... 109 
+VTS – Send Voice Tone(s)...................................... 101 
+VTX – Start Modem Transmit (Playback)............... 102 
Voice commands summary table...................................... 97 
Voice Gain Receive +VGR............................................ 102 
Voice Gain Transmit +VGT........................................... 103 
Voice Inactivity Timer +VIT ......................................... 103 
Voice Initialize All Parameters +VIP............................. 101 










