(Answer) (Category) SIP FAQ : (Category) SIP Protocol Operation :
How does a caller find its local registrar?
The local registrar is either manually configured or, more likely, the SIP client issues a multicast registration request to the sip.mcast.net standard multicast address, which all registrars listen to.

Another possibility is to use SLP through an extensions defined in http://www.cs.columbia.edu/~hgs/sip/drafts/draft-kempf-sip-findsrv-00.txt.

[Append to This Answer]
islepchin@dynamicsoft.com
2000-Jul-03 9:34pm
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