If the Called Party Number of the incoming call on the specified ISDN stack matches this value, the call is dispatched to the defined item. For outgoing calls from this item, the local number is sent as the Calling Party Number. Note: The matching of isdnDspLocalNumber value is done from right to left based on the number of digits in isdnDspLocalNumber. For example: if isdnDspLocalNumber is set to 124 then an incoming Called Party Number of 6501124 would match while one with 650024 would not.