User guide

AT Commands 121
6
$QCTCP[=<tcpmod>|[=
<tcpmod>[,<lowertxmss>[,
<uppertxmss>[,<rxmss>[,
<minrto>[,<maxrt>[,<minato>[,
<maxato>[,<maxtcpbackoff>]]]]
]]]]]|?|=?]
TCP Stack Changes
(0-1)
7
(0-1500)
(0-1500)
(0-1500)
(0-120000)
(0-120000)
(0-1000)
(0-6000)
(0, 1-100)
0
536
536
536
500
6000
100
6000
0
6
$QCVJ[=<usevj>|?|=?]
Use Van Jacobsen
Header Compression
(0-1) 1 1
1
A/ command is a special function that does not require the AT command header or the S3 command
terminator character and causes the execution of the previously entered AT command.
2
When no parameter value is sent with the +IPR command, the default baud rate is
assumed.
3
The ~ character represents “guard-time” before and after the +++ escape sequence.
4
This parameter is a quoted string, saved in the phone, and downloaded to the Gateway
Interworking Function modem when establishing an Asynchronous Data call.
5
The phone will always Power-On in Auto mode, using the service based on the user’s preferences.
6
This is an advanced AT command. Do not use it if you do not understand what it does.
7
If <tcpmod> is equal to one, the values in the rest of the variables will be put into effect. If <tcpmod>
is set to zero, the rest of the values entered into the AT command will be ignored, and the default
values will be restored to the internal variables.
Table 2. Supported AT Commands (continued)
AT Command and Syntax AT Command
Description (brief)
Value Range No Value
Definition
Power ON
Definition