Ws6318 - at+wipping

I have the same problem with WS6318 (L30.1_00gg.WS6318 140312), AT+WIPPING command do not work.

AT+WIPCFG=1
OK
AT+WIPBR=1,6
OK
AT+WIPBR=2,6,11,"xxx.net"
OK
AT+WIPBR=2,6,0,""
OK
AT+WIPBR=2,6,1,""
OK
AT+WIPBR=4,6,0
OK
AT+WIPBR=3,6,15
+WIPBR: 6,15,"10.1.54.160"
OK
AT+CLCC
OK
AT+WIPPING="193.193.193.100",1
OK
+WIPPING: 1,0,0
AT+CSQ
+CSQ: 17,99
.GSM_CSQ 17
OK
AT+CLCC
OK
AT+WIPPING="4.2.2.1",1
OK
+WIPPING: 1,0,0
AT+CLCC
OK
AT+WIPPING="8.8.8.8",1
OK
+WIPPING: 1,0,0
AT+CLCC
OK
AT+WIPCREATE=2,1,"xxx.xxx.xxx.xxx",xxx
OK
+WIPREADY: 2,1
AT+WIPDATA=2,1,1
CONNECT
<data>
+WIPPEERCLOSE: 2,1
+CME ERROR: 1643
AT+WIPCLOSE=2,1
OK

As you can see WIPPING command to respond ping-fail while TCP connection (WIPCREATE) work fine at the same time. Possible we need to ask for WS6318 price discount…