BT says no VOIP Blocking

[David Farber <dave () farber net>]

Begin forwarded message:

From: Dave Burstein <dave3 () dslprime com>
Date: October 30, 2004 2:45:01 PM EDT
To: dave () farber net
Subject: BT says no VOIP Blocking

 Dave

 I've got a firm denial from BT they are blocking VOIP. Jeff Pulver 
sent it to his Free World Dial-up list, and no one there had a similar 
problem. A telecom CEO in the U.K. couldn't track anything down either. 
So I give strong credibility to this comment from Francis King of BT.

" BT would not do what is suggested. I've had it checked out and happy 
to confirm BT is not deliberately applying network blocks to port 5060 
as suggested.   Indeed, both the BT Communicator and BT Broadband Voice 
Voip  products use SIP.
 
If  anyone is aware of specific instances of problems with this type of 
traffic BT would be interested in the details so we could check for any 
unintentional outcome from network protection measures - for example 
those put in place to protect from denial of service attacks on 
specific ports.  This would not be because of any deliberate BT action 
to block SIP traffic."
----------------

     VOIP and especially video are going to face major problems at many 
carriers soon, I believe, based on orders to companies like 
P-Cube/Cisco for equipment that that has that capability. I believe 
even more troublesome is network design that degrades VOIP/competitive 
video under the rubric of QOS, such as Microsoft IPTV. I hear from a 
vendor involved that QOS as applied in one prominent test has the 
effect of blocking Vonage when movies are on the network, even to other 
users. This is the current network design likely at BellSouth and Bell 
Canada, which will be far more devastating to video (which needs a 
clean meg or so for qualtiy) than VOIP (which only needs 32K).

     So big issues coming here - freedom of speech, end to end internet 
- but no evidence I can find BT is being inappropriate.
 db
 

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