Enfora MLG0208PB001 ユーザーズマニュアル

Enfora Enabler II-G Assisted GPS 
Modem Integration Guide 

of bytes downloaded per connection will be less as compared to the LTO file used in the Enhanced 
Autonomous mode. 

 

The following parameters will need to be programmed in order to provide data connection parameters 
to the network and location assistance server: 
 
AT+CGDCONT=1,"IP","APN" 

- Set GPRS connection with Network. APN is provided 
by the network operator 

AT%CGPCO=1,"username,password",0 - 

Set GPRS username and password, if any 

AT$AREG=2    - 

Automatic 

GPRS 

registration 

AT$GPSDST=”1.2.3.4”,”5.6.7.8”,1265 

- Set the IP addresses and port number of the SUPL 

interface 
AT$GPSSRC=1270 

   - 

Sets 

the 

Source 

Port number for the SUPL interface 

AT$LTOFREQ=4 

- Defines how often the LTO files are downloaded from 
the SUPL interface (4 hours with this setting) 

 
 
Set one of the following depending on desired operation: 

 

AT$GOPMD=2,1,0 

- Sets the GPS operating mode to mobile-based, the fix mode to one-
time fix, and the periodic report interval to 0 (not used in one-time fix 
mode) 

 
AT$GOPMD=2,2,0 

- Sets the GPS operating mode to mobile-based, the fix mode to 
native, and the periodic report interval to 0 (not used in native fix 
mode) 

 
AT$GOPMD=2,3,x 

- Sets the GPS operating mode to mobile-based, the fix mode to 
timed interval, and the periodic report interval x to a value between 2 
and 7200. 

 
Set one of the following depending on desired operation: 
 
AT$GPSLCL=0,<msgType> 

- Turns all local serial port reporting off, <msgType> is 
not used 

AT$GPSLCL=1,<msgType>  

- Directs the GPS data of <msgType> over the main 
serial port 

AT$GPSLCL=2,<msgType>  

- Directs the GPS data of <msgType> over a serial DUN 
connection (PPP) as UDP/IP packets, with UDP-API 
header 

AT$GPSLCL=5,<msgType>  

- Directs the GPS data of <msgType> over the second 
serial port 

 
AT&W 

 

 

 

 

- Writes the settings to non-volatile memory 

 
Upon setting the configuration above, the modem will operate in mobile-based mode and will stream 
the selected data over the desired serial interface. 

 
 

 

The enhanced autonomous mode provides assisted GPS data that is processed on the module to 
provide more robust GPS operation.  The enhanced autonomous mode will utilize a Long-Term Orbit 
(LTO) file.  In order for the enhanced autonomous mode to function correctly, the LTO file must be 
downloaded to the module.  In Enhanced Autonomous mode, the module will download ephemeris 

MLG0208PB001 

43 

Version1.01 – 10/3/2006