The Q2698 in firmware 7.50 A2 respond every time error with +WDGT and +WDGR commands.
The value are changed, but does not have any effects on volumes.
at+WDGR?
+WDGR: 1,0
OK
AT+WDGR=?
+WDGR: 1,(0-63)
OK
AT+WDGR=1,0
ERROR
AT+WDGR=1,63
ERROR
AT+WDGR?
+WDGR: 1,63