User manual

AT COMMAND SET
Section 4
4-14
Copyright (C) Dataplex Pty Ltd
ATX Call Progress Control
Parameters : 0 to 3
Default : 3
The ATX command controls the level of call progress detection when originating or
answering a telephone call. The table on the following page shows the result codes
returned.
ATX0 - Enables response codes 0-4, 8, 12-14 modem will blind dial.
ATX1 - Enables response codes 0-4, 6-8, 12-14 modem needs dial tone.
ATX2 - Enables response codes 0-5, 8-10, 12-21 modem needs dial tone.
ATX3 - Enables response codes 0-10, 12-21 modem will blind dial.
The term 'blind dialling' refers dialing without trying to detect a dial tone. This is useful
when the dial tone is a low level or non-standard dial tone as found with some PABX's.
The auto tone or pulse dial detection feature of the DPX-213 is only enabled when the
modem is not blind dialling and when it is configured to detect dial tone.
The available response codes that are selected by the ATXn command are shown below.
Table 4.2 Response Codes
Digit Code Description
0 OK Command executed without error.
1 CONNECT Modem connected at any speed if ATX0 enabled.
2 RING Incoming call detected.
3 NO CARRIER Carrier not detected after S7 timeout or carrier lost.
4 ERROR Illegal command or buffer overflow.
5 CONNECT 1200 Modem connected at 1200 bps.
6 NO DIAL TONE Dial tone not detected.
7 BUSY Busy signal detected, call aborted.
8 NO ANSWER Remote did not answer.
10 CONNECT 2400 Modem connected at 2400 bps.
11 Reserved
12 LOOP GRANTED Local or remote modem in loop.
13 RDL DENIED Remote modem has refused RDL request.
14 RDL ACCEPTED Local modem has accepted RDL request.
16 CONNECT 1200/REL Modem connected at 1200 MNP 2-5.
17 CONNECT 2400/REL Modem connected at 2400 MNP 2-5.
18 LOOP GRANTED/REL Local or remote modem in loop with MNP.
19 CONNECT 1200/REL Modem connected at 1200 MNP 2-4.
20 CONNECT 2400/REL Modem connected at 2400 MNP 2-4.
21 ABORTED Connection attempt aborted by operator.