It seems like there are a bunch of codes that would typically indicate a problem with a gateway, as opposed to a valid return - like no answer or busy. My current list that I'm working with that I'm treating as "upstream failed to handle it for some reason" is: CALL_REJECTED,GATEWAY_DOWN,RECOVERY_ON_TIMER_EXPIRE,NORMAL_TEMPORARY_FAILURE,DESTINATION_OUT_OF_ORDER, NORMAL_UNSPECIFIED,UNALLOCATED_NUMBER,NO_ROUTE_DESTINATION It would be nice to be able to both use negation type syntax, as well as 'collection's. I was thinking something like this: ALL,!USER_BUSY,!NO_ANSWER Example from OpenSSL: SSLCipherSuite ALL:!ADH:!EXPORT56:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv2:+EXP:NULL-MD5:NULL-SHA For now, I'm just using a variable for it defined centrally. -- Nathan ------------------------------------------------------------ Nathan Neulinger nneul@mst.edu Missouri S&T Information Technology (573) 612-1412 System Administrator - Architect