Hi, The issue You are facing is related to the sip routing loop detection. Any SIP request must contain a mandatory Max-Forwards header which sets the maximum number of intermediary nodes which can be traversed by this particular SIP request. Whenever sip node (proxy or gateway) receives SIP request it checks Max-Forwards value. If it is greater then 0 then SIP element decreases the value and forwards request further downstream. If the value is equal to zero then such intermediary node generates 483 Too Many Hops response.
Kind regards, - Tomasz Zieleniewski 2009/6/17 chandan kumar <[email protected]> > Hi all, > > Could any clarify what does HOP do in SIP? > > whether HOP is related to a register request or Call request? > > Issue faced : Phone comes up & tries to regsiter to the server.Lets say the > server is not available.So registration fails .Now I will try to make an IP > call to other SIP phone.Call is not going . > Both the phones are in same Network. > When i checked ethereal shows 483 error response too many hops. > > > > Best Regards, > chandan. > > > Love Cricket? Check out live scores, photos, video highlights and > more. Click here http://cricket.yahoo.com > _______________________________________________ > Sip-implementors mailing list > [email protected] > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
