AT Command Reference Guide for EDGE Wireless ... - wless.ru
AT Command Reference Guide for EDGE Wireless ... - wless.ru
AT Command Reference Guide for EDGE Wireless ... - wless.ru
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Chapter 7 – Call-Related <strong>Command</strong>s<br />
7.12 <strong>AT</strong>S0 Set Number of Rings be<strong>for</strong>e<br />
Automatically Answering a Call<br />
Description:<br />
This command determines the number of rings be<strong>for</strong>e automatic answering a call.<br />
Read <strong>Command</strong> Syntax: <strong>AT</strong>S0<br />
Response(s):<br />
<br />
OK<br />
ERROR<br />
Write <strong>Command</strong> Syntax: <strong>AT</strong>S0=<br />
Response(s):<br />
OK<br />
ERROR<br />
Parameter Description:<br />
<br />
000 Automatic answer mode is disabled. Default.<br />
001-255 Enable automatic answering after specified number of rings.<br />
Notes:<br />
• This command works <strong>for</strong> MT data and fax calls.<br />
• Autoanswering of CSD data and fax calls is supported on ASC0/Mux1 only.<br />
• If is set to higher values, the calling party may hang up be<strong>for</strong>e the call is automatically answered.<br />
• The correlation between <strong>AT</strong>S7 and <strong>AT</strong>S0 is important. Example: Call setup may fail if <strong>AT</strong>S7=30 and <strong>AT</strong>S0=20.<br />
• Setting is local to the interface. It is allowed to have different settings on different interfaces. In such cases the<br />
interface ‘wins’, which is idle and uses the smallest value.<br />
• The <strong>AT</strong>S0 write command is PIN protected.<br />
• The command <strong>AT</strong>S0 is also used as GPRS compatibility command to answer automatically to a network request<br />
<strong>for</strong> PDP context activation (<strong>for</strong> details see <strong>AT</strong>S0 <strong>for</strong> GPRS). So using <strong>AT</strong>S0= with n > 0, will per<strong>for</strong>m a GPRS<br />
attach, if the ME is not already GPRS attached and if ME is configured to do so (see <strong>AT</strong>^SCFG, parameter<br />
). If the GPRS attach fails (e.g., the network rejects the attach request), the write command returns an<br />
error, though the new value takes effect.<br />
The GPRS attach will not be per<strong>for</strong>med on recalling a stored user profile with <strong>AT</strong>Z or on powe<strong>ru</strong>p, if a n > 0<br />
setting was stored in the user profile with <strong>AT</strong>&W.<br />
Multi-Tech Systems, Inc. <strong>AT</strong> <strong>Command</strong>s <strong>for</strong> <strong>EDGE</strong> Modems (S000371B) 81