Obile – Siemens MC55 User Manual
Page 154
MC55 AT Command Set
7.11 ATS0
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MC55_ATC_V01.05
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• The correlation between
and
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
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
for GPRS). So using ATS0=
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
parameter
). If the GPRS attach fails (e.g. the network rejects the attach request), the write command
returns with error, but the value of
is changed anyway.
The GPRS attach will not be performed on recalling a stored user profile with
or on powerup, if a n > 0
setting was stored in the user profile with