2009/2/26 Daniel-Constantin Mierla miconda@gmail.com:
Devices don't implement it, so service providers don't implement it, so devices don't implement it, so... XD
I think the sip server implementations are pretty good here. Besides that, for client interaction it is required only DNS server configuration, nothing in sip server.
True, what I mean is that SIP providers don't offer a NAPTR record for their service since most clients don't implement it.