MTCMR-G-F4 Multi-Tech Systems, MTCMR-G-F4 Datasheet - Page 92

• 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

Using AT Commands During a Data Connection
Multi-Tech Systems, Inc. GPRS AT Commands Reference Guide (Document Number S000293J)
To use AT Commands during a data connection (such as while the product is in online mode), it is necessary either to
switch to offline mode, or to use the +WMUX command to enable Commands / Data multiplexing.
Switch from Online to Offline Mode
Switch from Offline to Online Mode
Chapter 11 – Data Commands
To switch from online mode to offline mode, the “+++” sequence must be sent. Following this, the product gets back
to offline mode with an “OK” response, and an AT command can be sent.
Note:
See the ATO command description.
The “+++” sequence only works with the +ICF command using the following settings:
•
•
8 data bits, with no parity
7 data bits, with even parity
Chapter 11 – Data Commands
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