Siemens Brodersen MC55 AT - Manual (Page 55)

MC55_ATC_V04.00 Page 55 of 475 3/17/06
Confidential / Released
Power saving mode 9 timeout
This parameter can be used to query or configure the wake up time for power saving mode 9 (see
AT+CFUN
with
parameter
<fun>
=9).
Parameter is global for the ME, volatile and will not be reset by
AT&F
.
5...20 (P) ...36000 The granularity of the timeout value is 100ms (i.e. a value of 10 equal 1 sec-
ond). The minimum timeout value that can be applied is 5, but accuracy is only
guaranteed for timeout values greater than 20.
Call Handover Status
This parameter offers a workaround to prevent problems during call handover into the 1900 MHz (or 1800 MHz)
band, caused by non-conforming configurations of the 1900 MHz (or 1800 MHz) GSM network.
"0"
(P) Disable workaround.
"1" Enable workaround. This value should be selected when handover into a 1900
MHz (or 1800 MHz) GSM network fails. If required for permanent use the value
needs to be set each time the ME is restarted.
Initial Retransmission Timeout (IRT)
1...3
(&F)(D) ...60 This parameter determines the time (in seconds) the TCP/IP stack will wait
before starting the first retransmission of packets during the initial connection
establishment phase.
The TCP protocol ensures the retransmission of packets several times at
increasing intervals until some upper limit is reached.
This mechanism prevents packet loss and serious congestion problems. In
addition, the parameters
<tcpMr>
and
<tcpOt>
can be set to further optimize
this mechanism for special conditions depending on the mobile network.
Parameter is global for the ME and non-volatile. Use of default value is recom-
mended. If changed the new value takes effect the next time you start an Inter-
net service with
AT^SISO
.
Maximum Number of Retransmissions (MR)
1...10
(&F)(D) ...30 This parameter determines the maximum number of times to retransmit TCP
packets.
The value set with
<tcpMr>
will be assumed as default for the
<srv-
ParmTag>
"tcpMR" when a new service profile is created with
AT^SISS
. In
each service profile, you can set another "tcpMR" value which has precedence
over the global value set with
AT^SCFG
. Existing service profiles are not
affected when you change the global value via
AT^SCFG
.
Parameter is global for the ME and non-volatile. Use of default value is recom-
mended.
Overall TCP Timer for outstanding connections (tcpOT)
1...6000
(&F)(D) This parameter specifies the number of seconds to wait before closing a con-
nection if TCP/IP packets are not acknowledged.
Setting the maximum value is practically equivalent to deactivating the tcpOT
mechanism because the maximum time would never be reached by the TCP/
IP stack.
The value set with
<tcpOt>
will be assumed as default for the
<srv-
ParmTag>
"tcpOT" when a new service profile is created with
AT^SISS
. How-
<psm9to>
(str)(+CSCS)
<HandOverStatus>
(str)(+CSCS)
<tcpIrt>
(str)(+CSCS)
<tcpMr>
(str)(+CSCS)
<tcpOt>
(str)(+CSCS)