[IP] BT says no VOIP Blocking
Begin forwarded message:
From: Dave Burstein <dave3@xxxxxxxxxxxx>
Date: October 30, 2004 2:45:01 PM EDT
To: dave@xxxxxxxxxx
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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