Hi, Ringing time basically equals to Timer B with a value of 64*T1 seconds till the transaction times out. The default value of T1 is 500 msec so IP Phone can ring for 32 sec.
There are two way to control the ringing time: 1. Either you increase/decrease the T1 value provided that the value is configurable. 2. Have a new propriety 'ringing timer' on the box and keep it configurable. After receiving 180/183 response, the new 'ringing timer' will start and will allow IP Phone to ring till the configured value. The second method is more desirable because changing the T1 value has other repercussions as Timer A also uses T1 value. Thanks, Poojan. Hyoungjoon Park wrote: > > Hi, all > How much time should the proxy server have after getting 180 RINGING > method from an IP phone ? > > From the "draft-ietf-sipping-service-examples-07, 2.9 Call Forwarding - > No Answer", it's saying " /* B1 ring until a configuration timer expires in > the Proxy. The Proxy sends Cancel and proceeds down the list of routes. */". > > I could not find what would be the "configuration timer". Is that just > implementation specific ? > > Thanks, > Jun > _______________________________________________ > Sip-implementors mailing list > [email protected] > http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors -- ------------------------------------------------------------------------- Poojan Tanna E-Mail: [EMAIL PROTECTED] Phone Office : 510-747-5282 Home : 510-569-8820 ------------------------------------------------------------------------- _______________________________________________ Sip-implementors mailing list [email protected] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
