MTCMR-G-F4 Multi-Tech Systems, MTCMR-G-F4 Datasheet - Page 104

• 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

Auto-Tests &T
Echo E
Restore Factory Settings &F
Multi-Tech Systems, Inc. GPRS AT Commands Reference Guide (Document Number S000293J)
Description:
Values:
Syntax:
Description:
Values:
Syntax:
Description:
Values:
Syntax:
This command runs various auto-tests.
<n>
Command syntax: AT&T<n>
This command is used to determine whether or not the modem echoes characters received by an
external application (DTE).
<n>
Command syntax: ATE<n>
This command is used to restore the factory settings from EEPROM.
It only restores the parameters that can be found in the Parameters Storage table with column AT&F
checked. Those parameters are restored in RAM and in E2P, overwriting the profile set with AT&W.
<n>
Command syntax: AT&F<n>
Command
AT&T0
Note: Perform software auto-tests
AT&T1
Note: Do the audio loop test (close)
AT&T2
Note: Stop the audio loop test (open)
Command
ATE0
Note: Characters are not echoed
ATE1
Note: Characters are echoed
Command
AT&F
Note: Ask for restoring the factory settings
AT&F0
Note: Ask for restoring the factory settings
0
Note: No other value is supported.
0
1
2
0
1
Restore factory settings
Perform software auto-tests
The response will be OK if no software problem is detected (EEPROM, RAM, and ROM
checksums); otherwise, a simple ERROR response is sent.
Perform the audio loop test (close)
This is used to validate the audio loop (microphone to speaker)
Stop the audio loop test (open)
This is used to validate the audio loop (microphone to speaker)
Characters are not echoed
Characters are echoed
Possible responses
OK
Note: Done
OK
Note: Done
Possible responses
OK
Note: No software problem detected, all checksums are
correct
OK
Note: Command valid
OK
Note: Command valid
Possible responses
OK
Note: Done
OK
Note: Done
Chapter 12 – V.24 and V.25 Commands
104