MESSAGE requires only a SIP proxy to span this. MSRP could easily
have a parallel set of relays. This was actually a fairly typical
enterprise network (at least through the mid 1990s), where there is
no IP connectivity between the corp net and the Internet. All cross-
net connectivity is provided by per-protocol proxies. I built up 50
or more enterprise networks with exactly this property.
SIP is useful without media. You ever use Micosoft's IM client?
--
dean
On Dec 5, 2007, at 4:23 PM, Jonathan Rosenberg wrote:
Dean, according to the picture, there is NO IP CONNECTIVITY between
endpoints. Only a SIP proxy connects them. Nothing will work.
Dean Willis wrote:
On Dec 2, 2007, at 10:25 PM, Jonathan Rosenberg wrote:
Section 3.1: this is an unrealistic use case. If this were the
actual network, no media would be able to flow in the resulting
session.
well, MESSAGE methods and presence and probably MSRP would flow.
Do you mean to say SIP isn't useful for that sort of application?
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