MTCMR-G-F4 Multi-Tech Systems, MTCMR-G-F4 Datasheet - Page 61

• 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

Select Message Service +CSMS
New Message Acknowledgement +CNMA
Multi-Tech Systems, Inc. GPRS AT Commands Reference Guide (Document Number S000293J)
Description:
Values:
Syntax:
Description:
Values:
Syntax:
The Supported Services include originated (SMS-MO) and terminated short messages (SMS-MT) as
well as Cell Broadcast Message (SMS-CB) services.
<service>
Command Syntax: AT+CSMS=<service>
This command allows reception of a new message routed directly to the DTE to be acknowledged.
Acknowledgement with +CNMA is possible only if the +CSMS parameter is set to 1 (+CSMS=1) when a
+CMT or +CDS indication is shown (see +CNMI command).
If no acknowledgement occurs within the network timeout, an RP-ERROR is sent to the network. The
<mt> and <ds> parameters of the +CNMI command are then reset to zero (do not show new message
indication).
<n>: Type of acknowledgement in PDU mode
<length>: Length of the PDU message
Command syntax in text mode:
Command syntax in PDU mode: AT+CNMA [ = <n> [ , <length> [ <CR>
Note:
Example of New Message Acknowledgement in TEXT Mode
Command
AT+CSMS=0
Note: SMS AT command Phase 2
AT+CSMS=1
Note: SMS AT command Phase 2 +
AT+CSMS?
Note: Current values ?
AT+CSMS=?
Note: Possible services
Command
AT+CSMS=1
Note: SMS AT Commands compatible with
GSM 07.05 Phase 2 + version
AT+CMGF=1
Note: Set TEXT mode
AT+CNMI=2,2,0,0,0
Note: <mt>=2
AT+CNMA
Note: acknowledge the message received
AT+CNMA
Note: try to acknowledge again
0
1
•
•
0
1
2
In TEXT mode, only positive acknowledgement to the network (RP-ACK) is possible.
In PDU mode, either positive (RP-ACK) or negative (RP-ERROR) acknowledgement to the
PDU is entered using <ackpdu> format instead of <pdu> format (e.g., SMSC address field is not
present). PDU is entered <ctrl-Z / ESC> ] ] ]
version 4.7.0
SMS AT commands are compatible with GSM 07.05 Phase 2 version 4.7.0.
SMS AT commands are compatible with GSM 07.05 Phase 2 + version .
network is possible.
send RP-ACK without PDU (same as TEXT mode)
send RP-ACK with optional PDU message
send RP-ERROR with optional PDU message
AT+CNMA
Possible responses
+CSMS: 1,1,1
OK
Note: SMS-MO, SMS-MT and SMS-CB supported
+CSMS: 1,1,1
Note: SMS-MO, SMS-MT and SMS-CB supported
+CSMS: 0,1,1,1
OK
Note: GSM 03.40 and 03.41 (SMS AT command Phase 2
+CSMS: (0,1)
OK
Possible responses
OK
OK
Note: TEXT mode valid
OK
+CMT: “123456”,”98/10/01,12:30 00+00”,129,4
,32,240, “15379”,129,5<CR><LF>
Received message
Note: message received
OK
Note: send positive acknowledgement to the network
+CMS ERROR: 340
Note: no +CNMA acknowledgment expected
version 4.7.0
Chapter 9 – Short Messages Commands
61