My company is using Sprint's Internet backbone for VoIP. We initially
started our VoIP project as VoFR several years back using their FR
network but migrated to IP when we were able to get a good deal on full
IP T1s to every office.
VoIP works pretty well across the backbone. Every office is no more than
2-5 hops away from each other. The problem with going across a backbone
is that you don't have end-to-end QoS and so we still experience some
voice dropouts at times. Something Sprint just started offering that
helped out a lot is their CoS option that for a $150 one-time setup fee
per site, they will apply a policy map to their gateway interface so
that as traffic crosses the slowest part of the link (the T1 between you
and Sprint), voice traffic will get priority. Of course, that's
something new they're offering and not all of their routers will support
that yet. We had to have a circuit moved from their Stockton to their
Anaheim POP because the router we were on in Stockton did not support
this yet.
We've played with a Sitara QosWorks box and got a lot better voice
quality than we ever did when we let the 3810s handle QoS, but again,
things still weren't perfect pin-drop quality. Anyway, Sprint is
pretty good about not letting their backbone get too congested before
building out, so the cause of problems is going to be traffic getting
jammed up on your T1 between yourself and Sprint and not the Sprint
backbone itself.
James
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of
Ryan Finnesey
Sent: Sunday, June 15, 2003 1:48 AM
To: [EMAIL PROTECTED]
Subject: Sprint Internet Backbone and VoIP? [7:70665]
Is anyone using the Sprint Internet backbone for VoIP? If so how is it
working and are you running the VoIP just in the states or outside of
the states?
Ryan
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7i=70729t=70665
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