MTCMR-G-F4 Multi-Tech Systems, MTCMR-G-F4 Datasheet - Page 132

• Manufacturer Part Number: MTCMR-G-F4
• Description: MODEM GPRS QUAD BAND GSM GLOBAL
• Manufacturer: Multi-Tech Systems
• Series: MultiModem® iCellr

Specifications of MTCMR-G-F4

• Frequency: 850MHz, 900MHz, 1.8GHz, 1.9GHz
• Applications: General Purpose
• Interface: RS-232, USB
• Function: Transceiver, Modem
• Data Rate - Maximum: 115.2kbps
• Modulation Or Protocol: GSM, GPRS
• Voltage - Supply: 9 V ~ 32 V
• Package / Case: Module with Case
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Power - Output: -
• Sensitivity: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 881-1151; MTCMR-G-F4

Alternate Line Service +WALS
Multi-Tech Systems, Inc. GPRS AT Commands Reference Guide (Document Number S000293J)
Description:
Values:
Syntax:
This command allows you to set and to get the active line. The CPHS command can be used to know
which line is active.
<CmdType>
<Lineld> Used only for <CmdType>
Command syntax: AT+WALS = <CmdType>[,<Lineld>]
Response syntax to AT+CPHS=2,3: +WALS = <Lineld>
Command
AT+WALS?
AT+WALS=?
AT+WALS = 0,1
Note: Activate Line 1
AT+WALS = 0,2
Note: Activate Line 2
AT+WALS = 1
Note: Get the current Active Line
AT+WALS = 1,2
AT+CPHS=0,3
Note: Deactivation of ALS feature
AT+CPHS=2,3
Note: Interrogate ALS feature
0
1
1
2
Set active line
Get active line
Line 1
Line 2
Possible responses
OK
Note: Display current active line
+WALS: (0-1),(1-2)
OK
+WALS: 1
OK
+CME ERROR: 3
Note: When the ALS feature is not allowed
+WALS: 1
Note: Display the current Active Line
Note: Syntax error
OK
Note: No effect
+WALS: 1
Note: Display the current Active Line
Note: In the case where the ALS feature is not allowed
+WALS: 1
+CME ERROR: 3
+CME ERROR: 3
Chapter 13 – Specific AT Commands
132