RE: Media Security Requirements Draft: New Requirement

["Dan Wing" <dwing@xxxxxxxxx>]

...
>>>I don't think the cases above would necessarily fail, because the 
>>>backward media direction is often opened before 200 OK, in order to 
>>>allow announcements and other type of early media.
>> 
>>And DTMF tones, which are transmitted to interact with IVRs, 
>>is carried via INFO or NOTIFY or RFC2833?
>
>I don't think that is specified.

If it's via RFC2833, a bi-directional media path needs to be
open (as you know).

>>>I am not familiar with that draft (neither am I aware of any other 
>>>requirements than the ones currently being worked on in the reqs 
>>>draft).
>
>>draft-wing-rtpsec-keying-eval-02.txt was the basis for my 
>>presentation at the first RAI open area meeting a couple of 
>>years back, and the basis for my presentation at the first 
>>RTPSEC BoF.
> 
> Ok. So, does that draft take the issues currently discussed into
> consideration?

No, we haven't revised that document since you brought up these
requirements.  But the requirements you have mentioned break how 
SIP functions pre-200 (irrespective of SRTP).

-d