Specifications

3GPP
3GPP TS 27.007 V6.3.0 (2003-
06)
3
9
Release 6
Description
Set command sets the values of the V.120 protocol parameters (defined in CCITT V.120) that are carried in the GSM
BC and/or LLC information elements.
Read command returns current settings for the V.120 parameters.
Test command returns values supported as a compound value.
Defined values
<rah>
0 rate adaption header not included
1 rate adaption header included (mandatory for protocol sensitive modes).
<mfm>
0 multiple frame establishment not supported, only UI frames allowed
1 multiple frame establishment supported, both I and UI frames allowed.
<mode>
0 bit transparent mode of operation
1 protocol sensitive mode of operation.
<llineg>
0 no negotiation, LLI = 256 only
1 negotiation allowed. Note - <negtype> indicates the connection over which the negotiation is performed.
<assign>
0 message originator is "default assignee"
1 message originator is "assignor only".
<negtype>
0 negotiation is done using logical link zero
1 negotiation is done with USER INFORMATION messages on a temporary signalling connection.
GSM/UMTS does not support all the possible modes of V.120 operation. However, in order to accommodate possible
future additions, the complete set of parameters is included in the command.
The permitted values are: 1, 1 or 0, 1, 0, 0, 0.
A recommended set of default values is: 1, 1, 1, 0, 0, 0.
Implementation
Mandatory, if the MT supports V.120 interworking.
6.22 Settings date format +CSDF
Table 29: +CSDF parameter command syntax
Command
Possible response(s)
+CSDF=[[<mode>]
[,<auxmode>]]
+CME ERROR: <err>
+CSDF?
+CSDF:<mode>[,<auxmode>]
+CME ERROR: <err>