Multi-Tech Systems GPRS (MTMMC-G) Benutzerhandbuch

Chapter 6 – Network Service Commands 

  

Multi-Tech Systems, Inc. Wireless GSM/GPRS AT Commands (Document Number S000293I) 

34 

Command Syntax:   AT+WOLM=<mode>,<loc>,[,<NumOper>,<short name>,<long name> 

Response Syntax for AT+WOLM=?     OK 

Response Syntax for AT+WOLM?       (lists all the available PLMN) 

AT+WOLM=1,1,20812,”WM”,”WM PLMN” 
Note: Add a new PLMN at location 1 

OK 
 

AT+WOLM=2,1 
Note: Read the PLMN at location 1 

+WOLM: 1,20812,”WM”,”WM PLMN” 
OK 

AT+WOLM=2,11 
Note: Read the PLMN at location 11 

+CME ERROR: 21 
Note: Invalid index 

AT+WOLM=1,1,20812,”WM1”,”WM1 PLMN” 
Note: Modify and existing PLMN 

OK 
Done 

AT+WOLM=? 
Note: Test command 

OK 

AT+WOLM? 
Note: Display current list 

+WOLM: 1,20812,”WM1”,”WM1 PLMN” 
OK 
Note: List the created PLMN in flash 

AT+WOLM=1,,20813,”PLMN2”,PLMN2 LONG”  
Note: Add a new PLMN at available location 

OK 
Or 
+CME ERROR: 20 
Note: Error returns if no more PLMN can be created 

AT+WOLM=0,1 
Note: Delete an entry at location 1 

OK 

AT+WOLM=0,11 
Note: Delete an entry at location 11 

+CME ERROR: 21 
Note: Invalid index 

 

 

 

Description: 

This command returns the operator name in alphanumeric format when given the numeric format being 
given. 

 

With the E-ONS (Enhanced Operator Name Service) feature, <lac> is an optional parameter to read 
names from OPL/PNN sim files. If it is not entered, name will be given with current <lac>. Note that in 
limited service, current <lac> is set to 0. 

It also allows the erasing of NITZ PLMN names stored in the flash memory by using AT+WOPN=3,0”. 

When the modem receives a NITZ (Network Information and Time Zone) message with Long Name or 
Short Name information, an entry with registered PLMN and names in the message is created in the 
flash memory. These names will then be used with +COPS, +COPN, +WOPN and +CPOL with the 
priority order defined in 3GPP TS 22.101. The modem supports only network names with the GSM 
default alphabet coding schemes. 

The user can choose which of the following methods will be used for getting PLMN names using the 
command: AT+WOPN=4,<PlmnOns>.  

The priority order is: 
1 E-ONS 

 

First entry if on Home PLMN or matching entry if existing in OPL/PNN SIM files. 

2 CPHS 

If on Home PLMN, use SIM file CPHS ONS (0x6F14) for Long Name if present and SIM 
file CPHS SONS (0x6F18) for Short Name if present; if not present, reuse SIM file 
CPHS ONS. 

If on Home PLMN, use SIM file SPN (0x6F46) if present. 

If there is a matching entry in the list of names received so far, use it. Note that in 
France, for example, all the operators use the NITZ message for the Date and Time 
feature, but not for PLMN names, so the list is always empty. In France, the NITZ 
message is sent on a GPRS attachment. 

If there is a matching entry in the flash PLMN list (created by +WOLM), use it. 

PLMN names in the ROM defined according to MoU SE.13 and NAPRD Operator 
Names documents. 

Once a long name is found following this priority order, it is given as a response to the 
AT command.