At 11:04 AM -0800 12/5/03, Bob Knight wrote:
Greg Boehnlein wrote:
On Thu, 4 Dec 2003, Bob Knight wrote:
Steve Dolloff wrote:
I would be seriously wary of putting a DS3's worth of voice traffic on a
TNT. I don't believe they are rated to handle that much voice. The
APX1000 would be a much better
On Mon, 8 Dec 2003, John Todd wrote:
- a high-density T1 termination system that can handle 8 T1's in a
very small amount of rackspace. DS3 de-muxing onboard would be
optimal, since anyone with 8 T1's is probably getting a DS3 delivery
method, and removing the M13 mux from the rack
John Todd wrote:
At 11:04 AM -0800 12/5/03, Bob Knight wrote:
Greg Boehnlein wrote:
On Thu, 4 Dec 2003, Bob Knight wrote:
Steve Dolloff wrote:
I would be seriously wary of putting a DS3's worth of voice
traffic on a
TNT. I don't believe they are rated to handle that much voice. The
APX1000
On Mon, 8 Dec 2003, John Todd wrote:
The PM3 LIVES ON DUDE! :) I'm all about Livingson, and have refused
to put the Asscend stuff in my data center. Seriously, Jake over at
portmasters.com is doing some good stuff with the PM3. Now that
we've got control of ComOS, it is just a matter of
On Thu, Dec 04, 2003 at 10:34:02PM -, Linus Surguy wrote:
I don't want to criticize your idea, but you do have to consider certain
points. Starting from (as has already been mentioned) the bandwidth of
DS3
is far too much to reasonably shove down the PCI bus without data loss /
On Thu, Dec 04, 2003 at 02:53:43PM -0600, Steven Critchfield wrote:
On Thu, 2003-12-04 at 14:06, John Todd wrote:
Obviously, there are no DS3 TDM cards that are currently compatible
with Zap channels. (or are there?)
Does anyone know of an inexpensive DS3 card that could perhaps be
I am uncertain of PCI bus speed limits - too many conflicting reports
are wedged into my head.
However, the intent here is to dump calls out via VoIP and not simply
switch between channels elsewhere on the DS3, so overcoming that
limitation needs to be addressed (if it exists at all, as a
] Port density: DS3 cards?
At 02:34 PM 12/4/2003, you wrote:
However, considering the traffic volumes that you are talking about,
is
it
really true to say that the traditional telco cards are
astronomically
priced, given the amount of revenue that can be generated per month
on a
DS3
I have been mulling over what it would take to get drivers done for
ImageStream's products. They have a component architecture that
is supposed
to reduce development time/cost. The component stuff is open
source. The
part of the driver that you have to write can be open source or
At 10:42 AM -0600 12/5/03, Andy Hester wrote:
I have been mulling over what it would take to get drivers done for
ImageStream's products. They have a component architecture that
is supposed
to reduce development time/cost. The component stuff is open
source. The
part of the driver that
I talked to Imagestream this morning about the possibilites. Their lead
engineer said that there would be no way to do voice over their
DS-3 cards
using software processing because it would take too much
processing power.
It would be possible to do some custom design for their boards that
Well, we know that we would be able to handle a partial DS3... assuming such a
thing is possible. Wouldn't people prefer a partial DS3 for say... 12T1's to
no way to do that many?
Why not just try to get the card working, then testing would show exactly how
much data could be handled...
using software processing because it would take too much
processing power.
He might mean the processing power of the controller on the card,
not the PC it's sitting in.
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On Fri, Dec 05, 2003 at 11:58:44AM -0600, Andy Hester wrote:
The guy did leave open the possibility that he could be wrong, and said that
he'd be glad to answer any further questions or if we had some other way of
doing it. If you or some of the others think that this should be possible
Greg Boehnlein wrote:
On Thu, 4 Dec 2003, Bob Knight wrote:
Steve Dolloff wrote:
I would be seriously wary of putting a DS3's worth of voice traffic on a
TNT. I don't believe they are rated to handle that much voice. The
APX1000 would be a much better platform, but I don't know if you
7:58 AM
Subject: RE: [Asterisk-Users] Port density: DS3 cards?
I talked to Imagestream this morning about the possibilites. Their lead
engineer said that there would be no way to do voice over their
DS-3 cards
using software processing because it would take too much
processing power
I have no reason to disbelieve this report, but I will offer some
minor scepticism at this reply. A well-equipped PC can currently
handle 8 T1 channels, and it seems that only the IRQ issue is causing
more channels to not be viable in the current TE410P environment. It
would seem
On Thursday 04 December 2003 14:06, John Todd wrote:
Obviously, there are no DS3 TDM cards that are currently compatible
with Zap channels. (or are there?)
This isn't so much a technological limit as much as a detail of
implementation, but the current Zaptel drivers have a limit of 252
Imagestream is really not the company to look to for this kind of
solution. They are not really interested in selling anything other than
their complete routers from what i can tell.
Sangome will have a DS3 card out shortly I believe. It should have the
capability to work down to the DS0 level
I believe there are boxes that will take a DS-3 from the Telco and spit
out T-1's to your telecom equipment. Not sure what they are called.
John Todd wrote:
Obviously, there are no DS3 TDM cards that are currently compatible with
Zap channels. (or are there?)
Does anyone know of an
On Thu, 2003-12-04 at 14:06, John Todd wrote:
Obviously, there are no DS3 TDM cards that are currently compatible
with Zap channels. (or are there?)
Does anyone know of an inexpensive DS3 card that could perhaps be
used with Asterisk if one were to try to port the Zap drivers to such
a
I don't want to criticize your idea, but you do have to consider certain
points. Starting from (as has already been mentioned) the bandwidth of DS3
is far too much to reasonably shove down the PCI bus without data loss /
excessive overheads. Thus a sensible approach would be one where the card
At 02:34 PM 12/4/2003, you wrote:
However, considering the traffic volumes that you are talking about, is it
really true to say that the traditional telco cards are astronomically
priced, given the amount of revenue that can be generated per month on a
DS3?
Eight quad-span T-1 cards from Digium:
Correcting an idiot-math error (24/4 != 8 and 1000*3 != 1000) ...
At 02:34 PM 12/4/2003, you wrote:
However, considering the traffic volumes that you are talking about, is it
really true to say that the traditional telco cards are astronomically
priced, given the amount of revenue that can be
On Thu, 2003-12-04 at 16:52, William Waites wrote:
On Thu, Dec 04, 2003 at 10:34:02PM -, Linus Surguy wrote:
I don't want to criticize your idea, but you do have to consider certain
points. Starting from (as has already been mentioned) the bandwidth of DS3
is far too much to reasonably
I am uncertain of PCI bus speed limits - too many conflicting reports
are wedged into my head.
However, the intent here is to dump calls out via VoIP and not simply
switch between channels elsewhere on the DS3, so overcoming that
limitation needs to be addressed (if it exists at all, as a
[mailto:[EMAIL PROTECTED]
Sent: Thursday, December 04, 2003 4:51 PM
To: [EMAIL PROTECTED]
Subject: Re: [Asterisk-Users] Port density: DS3 cards?
At 02:34 PM 12/4/2003, you wrote:
However, considering the traffic volumes that you are talking about,
is
it
really true to say that the traditional
:[EMAIL PROTECTED] On Behalf Of Ernest W.
Lessenger
Sent: Thursday, December 04, 2003 5:51 PM
To: [EMAIL PROTECTED]
Subject: Re: [Asterisk-Users] Port density: DS3 cards?
At 02:34 PM 12/4/2003, you wrote:
However, considering the traffic volumes that you are talking about, is
it
really true to say
On Thu, Dec 04, 2003 at 04:58:03PM -0600, Steven Critchfield wrote:
a standard 32 bit 33MHz PCI bus has a maximum bandwidth of
133MBps == 1Gbps. a DS3 is 45Mbps. even if you pass the data
over the bus 10 times, you're still only using up half the
peak bandwidth.
Thats only if you
There are DS3 (and OC-3) PCI cards available
with Linux drivers (for data). Might be worthwhile
contacting a vendor of those things to see if there's
a way to suck the TDM voice data
off a channelized DS3.
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On Thu, Dec 04, 2003 at 03:31:06PM -0800, David Boreham wrote:
There are DS3 (and OC-3) PCI cards available
with Linux drivers (for data). Might be worthwhile
contacting a vendor of those things to see if there's
a way to suck the TDM voice data
off a channelized DS3.
I know of OC3 ATM
On Thu, Dec 04, 2003 at 06:25:16PM -0500, William Waites wrote:
btw, jason thorpe at nasa has benchmarked gige cards on netbsd/i386
doing well in excess of 500Mbps so it /is/ possible.
Just another data point:
We also made measurements in November 2000 from a Pentium III running
Linux
John Todd wrote:
Obviously, there are no DS3 TDM cards that are currently compatible
with Zap channels. (or are there?)
Does anyone know of an inexpensive DS3 card that could perhaps be used
with Asterisk if one were to try to port the Zap drivers to such a
card? PCI, of course, would be
On Thu, 4 Dec 2003, John Todd wrote:
To Steven's comments: Yes, I have considered multiple Asterisk
devices and I am very aware of de-muxing DS3's into individual T1's
or PRI's (which bring it's own set of problems, since there is no
multi-PRI D-channel support in * at the moment)
Ahh..
: Thursday, December 04, 2003 4:51 PM
To: [EMAIL PROTECTED]
Subject: Re: [Asterisk-Users] Port density: DS3 cards?
At 02:34 PM 12/4/2003, you wrote:
However, considering the traffic volumes that you are talking about,
is
it
really true to say that the traditional telco cards
I know of OC3 ATM cards for linux, but AFAIK few telcos
want to do VoATM these days, do you know of an OC3 SONET
card? I can't find one even for POS...
Hmm...I was thinking Imagestream, but now I look closely
their cards are all ATM. Still, it might be worth talking to someone
there (Jeff for
On Thu, 4 Dec 2003, John Todd wrote:
To Steven's comments: Yes, I have considered multiple Asterisk
devices and I am very aware of de-muxing DS3's into individual T1's
or PRI's (which bring it's own set of problems, since there is no
multi-PRI D-channel support in * at the moment)
Ahh..
At 8:15 AM +0800 12/5/03, Steve Underwood wrote:
John Todd wrote:
Obviously, there are no DS3 TDM cards that are currently compatible
with Zap channels. (or are there?)
Does anyone know of an inexpensive DS3 card that could perhaps be
used with Asterisk if one were to try to port the Zap
The data-only cards for DS3 seem to be in the reasonable price
range, though I have _no_ idea if they could be turned into
TDM-capable cards. Examples that were shown to me:
http://oem.imagestream.com/PCI_720.html
http://www.ace-electronics.com/Hardware/T1E1J1/wanPCI-1T3.html
A little
On Thu, 4 Dec 2003, Bob Knight wrote:
Steve Dolloff wrote:
I would be seriously wary of putting a DS3's worth of voice traffic on a
TNT. I don't believe they are rated to handle that much voice. The
APX1000 would be a much better platform, but I don't know if you can
find one used.
At 8:47 PM -0600 12/4/03, Andy Hester wrote:
The data-only cards for DS3 seem to be in the reasonable price
range, though I have _no_ idea if they could be turned into
TDM-capable cards. Examples that were shown to me:
http://oem.imagestream.com/PCI_720.html
Actually, I'd ask a senior developer at ImageStream to see if they
think it's even possible first; they'll at least be able to say if
I send this thread to someone at Imagestream...
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I have been mulling over what it would take to get drivers done for
ImageStream's products. They have a component architecture that
is supposed
to reduce development time/cost. The component stuff is open
source. The
part of the driver that you have to write can be open source or
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