Technical information

Nonvolatile Parameter Database
2-110 AT+i Commands Reference Manual May 31, 2008
+iMTYP - Set Type of Modem Connected to W24
Note 1:Configuring the W24 to work with Silicon Laboratories Si2400:
1 AT+iMTYP=1
2 AT+iMIS= "
3 AT+iBDRF=3
4 AT+iBDRM=3
Note 2:Configuring the W24 to work with GPRS modems:
1 AT+iMTYP=2 - GSM/GPRS modem type
2 AT+iXRC=0 - blind dialing
Syntax: AT+iMTYP=n
Sets the modem type.
Parameters: n=0..9
Command Options:
n=0 Standard, Hayes compatible, dialup modem.
n=1 Silicon Laboratories Si2400 modem. See note below.
n=2 Standard GSM modem.
n=3 AMPS CM900 modem.
n=4 Falcom GSM modem.
n=5 Silicon Laboratories high-speed modems Si2414/33/56.
n=6 Standard 2400 baud modem (increased timeout).
n=7 GSM 536 modem (packets limited to 536 bytes).
n=8 CDPD cellular modem.
n=9 Wavecom Fastrack cellular modem.
n=10 SiLABs World modem.
n=11 Telit GE862-PY cellular modem.
+100 Add 100 to any modem type to prohibit W24 from issuing an
ATZ to the modem before dialing the ISP when an Internet
session is activated. This is useful if the modem needs to be
initialized manually before an Internet session. Note that an ATZ
will be issued when the session is terminated.
Default: n=0 Standard, Hayes compatible, dialup modem
Result Code:
I/OK If n is within limits.
I/ERROR Otherwise.
AT+iMTYP? Returns current modem type designator followed by I/OK.
AT+iMTYP=? Returns the message "0-11" followed by I/OK.