MTCMR-G-F4 Multi-Tech Systems, MTCMR-G-F4 Datasheet - Page 98

• 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

V42bis Data Compression Report +DR
Select Data Error Correcting Mode \N
Multi-Tech Systems, Inc. GPRS AT Commands Reference Guide (Document Number S000293J)
Description:
Values:
Syntax:
Description:
Values:
Syntax:
This command determines whether or not the use of V42bis is allowed for an incoming or outgoing data
call, if this feature is provided by the product. The intermediate result code represents current DCE-DCE
data compression type. The format of this result code is as follows:
The +DR intermediate result code, if enabled, is issued before the final result code, before the +ILRR
intermediate report and after the service report control +CR.
Command syntax: AT+DR=<status>
If this feature is provided by the product, this command controls the preferred error correcting mode for
a data connection. It can only be used for transparent data transmission.
If the MNP2 feature is provided, the product authorizes MNP error correction mode.
Command syntax: AT\N<n>
<status>
<n>
Command
AT\N0
Note: no error correction
AT\N?
Note: Current value
AT\N4
Command
AT+DR=?
Note: Test command
AT+DR=1
Note: Reporting enabled
AT+DR?
Note: Current value
Note:
+DR: NONE
+DR: V42B
+DR: V42B RD
+DR: V42B TD
0
1
0
5
+E prefixed commands of V.25 ter are not used.
Default. Disables error correction mode
Selects MNP error correction mode
State of the V42bis
Disable. Default value.
Enable
Data compression is not in use
Rec. V.42 bis is in use in both directions
Rec. V.42 bis is in use in receive direction only
Rec. V.42 bis is in use in transmit direction only
Possible responses
OK
0
OK
Note: Command valid
+CME ERROR: 3
Possible responses
+DR: (0-1)
OK
OK
Note: Command valid
+DR: 1
OK
Note: Command valid
Chapter 11 – Data Commands
98