Specifications

3GPP
3GPP TS 27.007 V6.3.0 (2003-
06)
1
4
Release 6
4.2 Information responses and result codes
The TA response for the example command line of figure 2 could be as shown in figure 3. Here, verbose response
format is enabled with command V1. If numeric format V0 would have been used, <CR><LF> headers of information
responses would have been left out and final result code changed to 0<CR>.
<CR><LF>+CMD2: 3,0,15,"GSM"<CR><LF>
<CR><LF>+CMD2: (0-3),(0,1),(0-12,15),("GSM","IRA")<CR><LF>
<CR><LF>OK<CR><LF>
information response to +CMD2?
information response to +CMD2=?
final result code
also string type subparameters possible
shows acceptable ranges of each subparameter
Figure 3: Response to a command line
So called intermediate result codes inform about progress of TA operation (e.g. connection establishment CONNECT),
and so called unsolicited result codes indicate occurrence of an event not directly associated with issuance of a
command from TE (e.g. ring indication RING).
4.3 ITU-T V.250 [14] TE-TA interface commands
Table 1 summarizes V.250 [14] commands relating to command line and response formatting, and TA-TE interface
operation. All are applicable to GSM/UMTS terminals.
Table 1: V.250 commands relating to TE-TA interface
Command
Subclause
Impl.
Use in GSM/UMTS
S3=[<value>]
6.2.1
mand.
command line termination character (mandatory default setting IRA 13)
S4=[<value>]
6.2.2
mand.
response formatting character (recommended default IRA 10)
S5=[<value>]
6.2.3
mand.
command line editing character (recommended default IRA 8)
E[<value>]
6.2.4
mand.
command echo (recommended default 1 i.e. TA echoes commands
back)
Q[<value>]
6.2.5
mand.
result code suppression (recommended default 0 i.e. TA transmits result
codes)
V[<value>]
6.2.6
mand.
TA response format (recommended default 1 i.e. verbose format)
X[<value>]
6.2.7
mand.
defines CONNECT result code format; values manufacturer specific
&C[<value>]
6.2.8
mand.
determines how ITU-T V.24 circuit 109 (or equivalent) relates to the
detection of received line signal from remote end (recommended default
1 i.e. 109 operation relates to detection of received signal)
&D[<value>]
6.2.9
mand.
determines how TA responds when ITU-T V.24 circuit 108/2 (or
equivalent) is changed from ON to OFF condition during online data
state
+IPR=[<value>]
6.2.10
opt.
fixed TE data rate (recommended default 0 i.e. automatic detection)
+ICF=[<format>[
,<parity>]]
6.2.11
opt.
TE-TA character framing (recommended default 3,3 i.e. eight data bits,
no parity, 1 stop bit)
+IFC=[<by_te> [
,<by_ta>]]
6.2.12
opt.
TE-TA local flow control (recommended default 2,2 i.e. TE uses ITU-T
V.24 circuit 133 (or equivalent), and TA circuit 106 (or equivalent))
+ILRR=[<value>]
6.2.13
opt.
determines whether the used local TE-TA data rate is informed using
intermediate result code +ILRR: <rate> before going online data
state after call answering or originating