at+wipbr=4,6,0 ERROR

Hi,
Why at+wipbr=4,6,0 ERROR ?
Hyper terminal AT commands :
+WIND: 13

+WIND: 12,0
at
OK

ati3
663_09gg.FSU002 1955080 080207 16:01

OK

at+wipcfg=1
OK

at+wipcfg?
+WIPCFG: 0,64

+WIPCFG: 1,0

+WIPCFG: 2,60

+WIPCFG: 3,0

+WIPCFG: 4,536

+WIPCFG: 5,0

+WIPCFG: 6,20

+WIPCFG: 7,32

+WIPCFG: 8,0

+WIPCFG: 9,0

+WIPCFG: 10,4

+WIPCFG: 11,4

+WIPCFG: 12,0

OK

at+wipbr=1,6
OK

at+wipbr?
+WIPBR: 6,0

OK
at+wipbr=2,6,11,“internet”
OK

at+wipbr=3,6,11
+WIPBR: 6,11,“internet”

OK
at+wipbr=2,6,0,""
OK

at+wipbr=3,6,0
+WIPBR: 6,0,""

OK
at+wipbr=2,6,1,""
OK

at+wipbr=3,6,1
+WIPBR: 6,1,""

OK
at+wipbr=4,6,0
ERROR

This should probably be in the TCP/IP forum…

For starters, use the command AT+CMEE=1 to enable better error reporting. Then you can look up the CME error number in the documentation.