On Apr 7, 2008, at 3:45 AM, kokoska rokoska wrote: > >> We already kill the call if the Max-Forwards makes it to zero. >> > No, unfotunately, Max-Forwards is not for the same thing. > X-HopCounter we (I and lot of VoIP providers around me) use for > overall > "hops" (visited call-routers) counting - ISUP and SIP. > This variable comes from SS7 world (ISUP) and is mandatory for good > interconnection (helps against loops etc. - similary as MaxForwards > does) especialy if RNPDB comes into the game :-) > First router sets HopCounter to 31, every next router should decrement > the value on every single processing attempt (i.e. if call goes thru 5 > extensions in Freeswitch dialplan it should be decremented by 5) and > on > 0 or lower values router should stop routing and reject the call... >
I think we would probably convert this to a Max-Forwards when doing a sip interconnect, I need to see if we decrement it in a transfer within the switch, I believe we already do. But like all the other headers, we can get it with variables, and create the other header, but we only auto decrement the Max-Forwards. That being said, it is not required that we start Max-Forwards at 70. I have in the past passed this along from ss7 by either passing the value directly from ss7 or using a ratio calculation similar to how cisco does it. Mike _______________________________________________ Freeswitch-dev mailing list Freeswitch-dev@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-dev UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-dev http://www.freeswitch.org
