[VOIPSEC] SIP complexity, was VPNs and VoIP

[Geoff Devine]

Michael Slavitch writes:

> "Given the incredible complexity of SIP"
>
> Buh?  SIP is simple. It's the bellheads who made it hard.

Nope.  It's the protocol designers who invented a protocol without first
looking at the functional requirements who made it hard.  Instead, we
end up with hundreds of IETF RFCs with hack workarounds to the
deficiencies in the original RFC 3261 spec.  Anyone who has architected
a telephone system can tell you that an architecture that can make a
simple line to line phone call is trivial.  An architecture that can do
all the features and meet all the requirements is difficult.  

Geoff