Extended AT Commands Manual
Page 60 of 70
2009-06-25
12.2.4.
Basic result codes
The following table specifies the Basic Result Codes to be supported for the data services.
Exceptions to EIA/TIA-602 are indicated by square brackets. Default settings are shown in bold.
The ERROR result code shall be returned for all command sets which do not comply with the
syntax rules of 5.1 of EIA/TIA-615, or Section 5 of EIA/TIA-602.
Table 12.81Basic result codes
Numeric Verbal
Description
Packet
Data
STUIII
0
OK Command
executed.
R
R
1
CONNECT Entering
online
state.
R R
2
RING
Alerting signal received from network.
N/A
N/A
3
NO CARRIER
Unable to activate the service or call
terminated.
R N/A
4
ERROR
Command not recognized or could not be
executed.
R R
6
NO DIALTONE
No dial tone detected within time-out
period.
N/A N/A
7
BUSY
Reorder (Busy signal) received.
R
N/A
8
NO ANSWER
Five seconds of silence not detected after
ring back when @ dial modifier is used.
N/A N/A
12.3.
Extended AT Command Sets
12.3.1.
Extended AT configuration command set
Table 12.82 Extended AT configuration command set
Command
Value
per
Description
Packet
Data
+DR
IS-131
Data Compression Reporting. This extended-format numeric
parameter controls whether or not the extended-format “+DR:”
intermediate result code is transmitted from the IWF over the Um
interface.
0: Off (Default)
1: On
O
+DS
IS-131
Data Compression. This extended-format compound parameter
controls the V.42bis data compression function on the PSTN link
(if provided in the IWF).
0,0,2048,6 (Default)
O
+ES
ITU-T
V.80 Ter
Enables the Synchronous Mode Values per spec <orig_rqst> – 6 <orig_fbk> –
Undefined <ans_fbk> –1
N/A