At+Dr V.42Bis Data Compression Reporting Control - Quectel M35 Command Manual

Reference
V.25ter
Parameter
<p0> 0
<n> 0
1
<p1> 512-4096
<p2> 6-250
NOTES
1. This command is only for data call.
2. GSM transmits the data transparently. The remote TA may support this compression.
3. This command must be used in conjunction with command AT+CRLP to enable compression
(AT+CRLP=X,X,X,X,1,X).

15.7. AT+DR V.42bis Data Compression Reporting Control

AT+DR V.42bis Data Compression Reporting Control
Test Command
AT+DR=?
Read Command
AT+DR?
Write Command
AT+DR=[<value>]
Reference
V.25ter
M35_AT_Commands_Manual
compression mode by TA at the compression negotiation with
the remote TA after a call set up.
OK
NONE
Allow negotiation of <p0> down
Do not allow negotiation of <p0> - disconnect on difference
Dictionary size
Maximum string size (Default value is 6)
Response
+DR: (list of supported <value>s)
OK
Response
+DR: <value>
OK
Response
This
intermediate result code of the current data compressing is
reported by TA to TE after a connection is established.
OK
Confidential / Released
parameter setting determines
GSM/GPRS Module
M35 AT Commands Manual
whether
183 / 186
or not