DNS
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... client sending a request to a SIP server typically performs
a DNS lookup for the domain name of the server. When NAPTR [4 ...
... SIP
server that supports, for instance, three different transport
protocols, will have three different DNS entries.
Since it is foreseen that the number of transport protocols ...
... by a particular application layer protocol is not going to grow
dramatically, having a DNS entry per transport seems like a scalable
enough solution.
...
... these layers are transport layer security and compression. If DNS
was used to discover the availability of these layers for a
particular server, the number of DNS ...
... DNS
was used to discover the availability of these layers for a
particular server, the number of DNS entries needed for that server
would grow dramatically.
...
... SigComp
It is clear that this way of using DNS is not scalable. Therefore,
an application layer mechanism to express support of signalling
...
... Dynamic Delegation Discovery System (DDDS) Part Three: The Domain Name System (DNS) Database", RFC 3403prop, October 2002. ...
... Gulbrandsen, A., Vixie, P. and L. Esibov, "A DNS RR for specifying the location of services (DNS SRV ...