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HSDPA Standard At Commands Page 12 of 60 Version 1.2
The following diagram shows the naming convention of messages between MT2 and TE2.
Figure 1. Naming convention diagram
1.8. DTE-TA/DCE interface commands
Table 3. ITU-T V.250 commands relating to TE-TA interface
Command Req Description Support
E<value> Mand. Command echo
supported
Q<value> Mand. Result code suppression
supported
S3 Mand. Command line termination character supported
S4 Mand. Response formatting character
supported
S5 Mand. Command line editing character
supported
V<value> Mand. DCE response format
supported
X<value> Mand. Result code selection and call progress monitoring control
supported
&C<value> Mand. Circuit 109 DCE RLSD (DCD) behavior
supported
&D<value> Mand. Circuit 108 DTE DTR behavior
supported
+IPR=<rate> Opt.
Fixed Rm Rate. This numeric extended-format parameter
specifies the data rate at which the MT2 will accept
command set, in addition to 1200 bit/s or 9600 bit/s (as
required in EIA/TIA-602). It may be used to select operation
at rates at which the MT2 is not capable of automatically
detecting the data rate being used by the TE2.
115200bps. (Default)
+IPR? Displays current set value.
+IPR=? Displays range of (supported auto detectable rates),
(list of supported fixed-only rates). e.g. +IPR: (1200, 2400,
supported
<TE2 sends command to MT2>
Response (excluding AT)
TE2 MT2
Command (including AT)
<MT2 sends notification message to TE2>
TE2 MT2
Notification (excluding AT)
Indication (message)
TE2
MT2
Signal (H/W)
<MT2 sends H/W signalling to TE2>