Multi-Tech Systems GPRS (MTSMC-G) ユーザーズマニュアル

Chapter 13 – Specific AT Commands  

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

132 

 

Description: 

This command allows you to set and to get the active line. The CPHS command can be used to know 
which line is active. 

0 

Set active line 

1 

Get active line 

<Lineld> Used only for <CmdType> 

1   Line 1 
2   Line 2 

  AT+WALS = <CmdType>[,<Lineld>] 

Response syntax to AT+CPHS=2,3:  +WALS = <Lineld>

   

AT+WALS? +WALS: 

1 

OK 
Note: Display current active line 

AT+WALS=? +WALS: 

(0-1),(1-2) 

OK 

AT+WALS = 0,1 
Note: Activate Line 1 

+WALS: 1 
OK 

AT+WALS = 0,2 
Note: Activate Line 2  

+CME ERROR: 3 
Note: When the ALS feature is not allowed 

AT+WALS = 1 
Note: Get the current Active Line 

+WALS: 1 
Note: Display  the current Active Line 

AT+WALS = 1,2 
 

+CME ERROR: 3 

Note: Syntax error 

AT+CPHS=0,3 
Note: Deactivation of ALS feature 

OK 
Note: No effect 

AT+CPHS=2,3 
Note: Interrogate ALS feature 

+WALS: 1 
Note: Display  the current Active Line 

+CME ERROR: 3 

Note: In the case where the ALS feature is not allowed