Siemens MC55 Manuel d'utilisateur télécharger pdf (Page 154)

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101

MC55 AT Command Set

7.11 ATS0

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MC55_ATC_V01.05 Page 154 of 469 2/10/04

Confidential / Released

• The correlation between ATS7 and ATS0 is important.

Example: ATS7=30 and ATS0=20 may not allow call establishment.

• 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

<n> value.

• ATS0 write command is PIN protected.

• The command ATS0 is also used as GPRS compatibility command to answer automatically to a network

request for PDP context activation (for details see

ATS0 for GPRS). So using ATS0=<n> with n > 0, will per-

form a GPRS attach, if the ME is not already GPRS attached and if ME is configured to do this (see

AT^SCFG,

parameter

<gaa>). If the GPRS attach fails (e.g. the network rejects the attach request), the write command

returns with error, but the value of

<n> is changed anyway.

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

ATZ or on powerup, if a n > 0

setting was stored in the user profile with

AT&W.

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Siemens MC55 Manuel d'utilisateur Page 154

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