Hi,
The draft is basically ready for publication but I would like to see some
clarifications in it.
1. The draft explains describes two mechanisms the session independent and the
session dependent policies. I did not see what the relationship between them if
any is. I think that at least the draft should say that they can be implemented
independently if there are no other recommendations.
2. Section 3.2 describes how a UA discovers the policy servers for session
independent policies based on the configuration framework ua-profile.
"ua-profile" event package [4] provides a mechanism to discover
policy servers in the local network and the home domain. The "local-
network" profile-type enables a UA to discover a policy server in the
local domain. The "user" profile type enables the discovery of a
policy server in the home domain. A UA compliant to this
specification SHOULD attempt to discover and subscribe to the policy
servers in these two domains"
The configuration framework does not specify the profile data which is out of
scope.
So what is the meaning of this section - is this one way to find the policy
server or do you suggest that if you want to have session independent policies
you should have the policy servers defined in the profile data but then how
does a UA identify it in the profile data, is it by name?
I think this needs more clarification.
3. In section 4.2
" Endpoints set up a separate policy channel to each policy
server and can specifically decide which information they want to
disclose to which policy server"
How does this work with the trust model between the UA and the proxy. The UA
claimed that it got the policy from the proxy but from this sentence you can
assume that the UA got the policy only to what it asked. I think that the UA
need to include in document sent to the proxy all the information it can map
from SDP.
4. In section 4.4.2 what will be the proxy behavior if it sends the Invite with
the policy server URI to an endpoint who do not support session policy. The EP
can ignore the request and respond 200 that will not include the support for
the session policy. What will the proxy do or is it left to local
implementation.
5. In section 4.4.6 in the note
" If, however, a policy server cannot respond with
a policy right away, it may return a policy that temporarily
denies the session and update this policy as the actual policy
decision becomes available"
I am not sure how does that work, what will the UA do in this case. Will it
continue with the call without any media sessions?
Typo
In section 4.4.3 third line should be field and not filed
Roni Even
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