Siemens AC75 User Manual

s

AC75_ATC_V01.002

Page 170 of 569

10/30/06

Confidential / Released

000

(&F)

Automatic answer mode is disabled.

001-255

Enable automatic answering after specified number of rings. 

• This command works for MT data and fax calls.
• Autoanswering of CSD data and fax calls is supported on ASC0/Mux1 only.
• If 

 is set to higher values, the calling party may hang up before the call is automatically answered.

• The correlation between 

 and 

 is important.

Example: Call setup may fail if ATS7=30 and ATS0=20.

• Setting is local to the interface. It is allowed to have different settings on different interfaces. In such cases

the interface 'wins', which is idle and uses the smallest 

 value. 

• The ATS0 write command is PIN protected.
• According to 

 is also used

as GPRS compatibility command to answer automatically to a network request for PDP context activation

(see Section 

). Therefore, when the 

 write command is issued with 

 greater than 0, the ME will

attempt to perform a GPRS attach if not yet attached and if configured to do so (due to the setting

="GPRS/ATS0/withAttach","on"). 

If the automatic GPRS attach fails the ME keeps trying to attach for approx. 5 minutes, before 

 ends up

with "ERROR" or "+CME ERROR: unknown", though the new 

 value takes effect. To avoid the risk of long

response times to 

 in such case take care that the parameter 

 is off, if autoanswer

mode is not needed for GPRS or if the mobile works in non-GPRS networks. 

The GPRS attach will not be performed on recalling a stored user profile with 

 or on powerup, even though

a value 

 greater than 0 was stored in the user profile with 

Read Command

ATS0?

Response(s)

OK

ERROR

Write Command

ATS0=

Response(s)

OK

ERROR

Reference(s)

PIN

ASC0 ASC1 USB MUX1 MUX2 MUX3 Charge

4

Last

V.250

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