RealTimeUpdate( ) Updates a value via the RealTime configuration handler
RealTimeUpdate(family,colmatch,value,newcol,newval)
Uses the RealTime configuration handler system to update a value. The column newcol in family matching column colmatch=value will be updated to newval.
; this will update the port column in the sipfriends table to a new
; value of 5061, where the name column matches "John"
exten => 123,1,RealTimeUpdate(sipfriends,name,John,port,5061)