Olivier wrote:
>
>
> 2008/1/10, Robert Moskowitz <[EMAIL PROTECTED] 
> <mailto:[EMAIL PROTECTED]>>:
>
>     Jeronimo Romero wrote:
>     >
>     > Does anyone know if sip phones from any of the major IP phone
>     vendors
>     > support 802.1x authentication? Any feedback would be greatly
>     appreciated.
>     >
>     This is so unlikely.  I worked on 802.1X and 802.11i.  There is
>     just too
>     much overhead there.  No way to meet the ITU 50ms disruption
>     requirement.
>
>
> Do you mean ITU is asking phone to authenticate within a 50ms time frame ?
> Or do you mean, RTP flow encryption shouldn't exceed 50ms ?
The later.  So an authenticate while a flow is in process can kill the 
call.  This is what can happen during a roam (or a re-key).

Cellular phone authentication can take a REAL long time!  You see this 
when the phone is 'discoverying' your network.



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