[c-nsp] Transporting TDM voice DS3s over Ethernet

[Ted Mittelstaedt]

Sorry I entered this discussion late but, I'll ask the obvious:

The OP wants to put a PBX in a colo cabinet, correct?

The co-lo cabinet provider won't run 2 length's of 75 ohm coax for the
DS3's from the basement of their building where the IX is, to the 3rd floor
where the colo is, correct?  But they will run lengths of Ethernet?

Has the OP considered telling the colo provider they are going
to leave and find a different colo provider?  We have found with
our own colo cabinet contracts that threatening the provider with
not renewing the contract will suddenly start allowing all sorts of
rules to br broken.

The solution seems pretty obvious to me.

Ted

----- Original Message ----- 
From: "Chad Whitten" <cwhitten at nexband.com>
To: <cisco-nsp at puck.nether.net>
Sent: Saturday, July 15, 2006 10:16 AM
Subject: Re: [c-nsp] Transporting TDM voice DS3s over Ethernet


> I have to agree.  I had tremendous problems transporting 4 DS1's over a 10
> megabit ethernet link.  Also, the ethernet connection must be a layer 2
> connection and not a routed layer 3 connection.  Trying to do this over a
> routed connection induces all kinds of problems with timing and such.
>
> No one has asked this yet, so I will:  would it be feasible to install
> some sort of VoIP gateway and move away from TDM or are you actually using
> that many voice channels?
>
> Tim Devries said:
> > I would say it's very unlikely.  The best bet is Gig IMO.
> >
> >
> > Thanks,
> >
> > Tim
> >
> > ________________________________
> >
> > From: Frank Bulk [mailto:frnkblk at iname.com]
> > Sent: Sat 7/15/2006 1:39 PM
> > To: Tim Devries; cisco-nsp at puck.nether.net
> > Subject: RE: [c-nsp] Transporting TDM voice DS3s over Ethernet
> >
> >
> >
> > So what you're saying is that two unframed DS-3's won't work over 100
> > Mbps Ethernet, correct?
> >
> > Frank
> >
> > -----Original Message-----
> > From: cisco-nsp-bounces at puck.nether.net
> > [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Tim Devries
> > Sent: Saturday, July 15, 2006 11:27 AM
> > To: cisco-nsp at puck.nether.net
> > Subject: Re: [c-nsp] Transporting TDM voice DS3s over Ethernet
> >
> > Just FYI for anyone interested, we use these products and although they
> > work very well, they add about 40%overhead.  So for example a T1 will
> > use a solid 2M, which is not terrible if bandwidth is cheap where you
> > are, but it can be a bit of a pain when bandwidth is at a premium (like
> > it is for us).
> >
> > Regards,
> >
> > Tim
> >
> > ________________________________
> >
> > From: cisco-nsp-bounces at puck.nether.net on behalf of Clayton Zekelman
> > Sent: Sat 7/15/2006 11:14 AM
> > To: Robert E. Seastrom
> > Cc: Matthew Stainforth; cisco-nsp at puck.nether.net
> > Subject: Re: [c-nsp] Transporting TDM voice DS3s over Ethernet
> >
> >
> >
> >
> > Interesting product.
> >
> > At 10:04 AM 7/15/2006, Robert E. Seastrom wrote:
> >
> >
> >>Clayton Zekelman <clayton at mnsi.net> writes:
> >>
> >> > Point me to such a commercial product that will correctly transport
> >> TDM voice frames across Ethernet at that scale that does not use
> >> VoIP or DSP's.
> >>
> >>Be glad to; TDM over IP is low art these days.  The RAD IPmux-16 will
> >> transport up to 16 x T1s or 2 x T3s across IP.
> >>
> >>http://www.rad-direct.com/Product-TDM-over-IP-Gateway-IPmux-16.htm
> >>
> >> > If one does not already exist, then basically, you're describing a
> >> science fair project.
> >>
> >>Do you suppose you could spare us the waspishness in followup posts?
> >
> >
> > WTF is "waspishness"?  I didn't appreciated Cappucios' allegation of
> > illicit drug use, so my response was a bit terse.
> >
> >
> >>Best,
> >>
> >>                                         ---Rob
> >
> > ---
> > Clayton Zekelman
> > Managed Network Systems Inc. (MNSi)
> > 344-300 Tecumseh Rd. E.
> > Windsor, Ontario
> > N8X 5E8
> >
> > tel. 519-985-8410
> > fax. 519-258-3009
> >
> >
> > --
> > No virus found in this outgoing message.
> > Checked by AVG Anti-Virus.
> > Version: 7.1.394 / Virus Database: 268.10.1/389 - Release Date:
> > 7/14/2006
> >
> >
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> >
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> >
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>
> -- 
> Chad Whitten
>
>
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