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faraz.khan at emergen.biz
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 Posted: Sat Mar 08, 2008 8:54 am Post subject: [asterisk-users] FXS channel banks |
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To support the quintum viewpoint we have deployed the Tenor AX 24-Port
FXS in mass configurations (200-300 extensions) without issues. In a
newer project we are going to do 1000 FXS extensions. They are
exceptionally reliable.
Steve- I thought Quintum doesnt do 48 Port FXS gateways? Last I found
out from quintum was that that max is 48 port FXO or 24 Port FXS. Is
this correct?
Quoting Steve Totaro <stotaro at totarotechnologies.com>:
| Quote: | On Fri, Mar 7, 2008 at 8:02 PM, Tzafrir Cohen
<tzafrir.cohen at xorcom.com> wrote:
| Quote: | On Fri, Mar 07, 2008 at 03:00:03PM -0500, Jay R. Ashworth wrote:
| Quote: | On Fri, Mar 07, 2008 at 02:14:57AM +0200, Tzafrir Cohen wrote:
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http://www.voipon.co.uk/xorcom-astribank32-32-fxs-channel-bank-p-530.html
| Quote: | | Quote: | | Quote: |
Trouble is, you'll need 7 32-port units to cover your needs
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and I'm not
| Quote: | | Quote: | | Quote: | sure if USB2 is up to driving that many ... Tzafrir?
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One USB connector can take a number close to that easily. But even if
USB were the bottleneck, you would just add another USB controller in
the form of PCI card and get extra bandwidth.
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Is there any reason you'd want to do that on a system of that scale
instead of just using Ethernetted FXS boxes on a dedicated 100Base?
Even if you didn't want to use reinvite, seems you'd still win just
from the less expensive host interface (I can't understand people using
T-1 interfaces for FXS channels either, honestly, in the current
environment).
|
USB is very cheap. It's in every computer. A dedicated ethernet segment
costs more to set up that an extra USB segment (a 10$ for an extra USB
controller? 20$ for a USB hub? a bit more for the wiring?).
TDMoE is more complicated as the latency is higher and the jitter is
larger.
Now both thing have been (T1 channel banks, and TDMoE) have been done by
others. People do use and buy them. I don't intend to say that they
don't. But ours does as well 
--
Tzafrir Cohen
icq#16849755 jabber:tzafrir.cohen at xorcom.com
+972-50-7952406 mailto:tzafrir.cohen at xorcom.com
http://www.xorcom.com iax:guest at local.xorcom.com/tzafrir
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Ethernet/SIP is going to be by far the most flexible.
You can have much longer cable runs without some kind of USB repeater
device. Switches are cheap, CAT5/6 is cheap.
You could put a Quintum Tenor AX 48 Port (for instance) in one section
of a building, campus, LAN (WAN if you are daring) and the server
could be anywhere, not tied by 15 or 30 foot USB cables. Then if you
are doing new wiring, you can run the shortest distance from the
location of the SIP FXS device to the phones.
You can have redundant, self healing links as well as link aggregation.
I cannot see how TDMoE or USB come anywhere close to this flexibility
and certainly don't see it being a fit for high port densities like
discussed.
I see TDM0E as something that a tech guy thought would be cool (and it
is but not very practical) and a USB device something suited for the
SoHo (but missing the scalability, redundancy, and flexibility that IP
gives.)
Thanks,
Steve Totaro
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--
Faraz R Khan
Chief Architect
Emergen Consulting Pvt Ltd
www.emergen.biz |
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faraz.khan at emergen.biz
Guest
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| Posted: Sat Mar 08, 2008 9:09 am Post subject: [asterisk-users] FXS channel banks |
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I would however be interested in knowing how these USB channel banks
work out in a extremely large environment. Cost/Reliability and
management wise.Keep in mind that grandstream now has a 24 port FXS
gateway which retails for $700- and their newer 8 port gateways are
extremely good.
Quoting Steve Totaro <stotaro at totarotechnologies.com>:
| Quote: | On Fri, Mar 7, 2008 at 8:02 PM, Tzafrir Cohen
<tzafrir.cohen at xorcom.com> wrote:
| Quote: | On Fri, Mar 07, 2008 at 03:00:03PM -0500, Jay R. Ashworth wrote:
| Quote: | On Fri, Mar 07, 2008 at 02:14:57AM +0200, Tzafrir Cohen wrote:
|
http://www.voipon.co.uk/xorcom-astribank32-32-fxs-channel-bank-p-530.html
| Quote: | | Quote: | | Quote: |
Trouble is, you'll need 7 32-port units to cover your needs
|
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and I'm not
| Quote: | | Quote: | | Quote: | sure if USB2 is up to driving that many ... Tzafrir?
|
One USB connector can take a number close to that easily. But even if
USB were the bottleneck, you would just add another USB controller in
the form of PCI card and get extra bandwidth.
|
Is there any reason you'd want to do that on a system of that scale
instead of just using Ethernetted FXS boxes on a dedicated 100Base?
Even if you didn't want to use reinvite, seems you'd still win just
from the less expensive host interface (I can't understand people using
T-1 interfaces for FXS channels either, honestly, in the current
environment).
|
USB is very cheap. It's in every computer. A dedicated ethernet segment
costs more to set up that an extra USB segment (a 10$ for an extra USB
controller? 20$ for a USB hub? a bit more for the wiring?).
TDMoE is more complicated as the latency is higher and the jitter is
larger.
Now both thing have been (T1 channel banks, and TDMoE) have been done by
others. People do use and buy them. I don't intend to say that they
don't. But ours does as well
--
Tzafrir Cohen
icq#16849755 jabber:tzafrir.cohen at xorcom.com
+972-50-7952406 mailto:tzafrir.cohen at xorcom.com
http://www.xorcom.com iax:guest at local.xorcom.com/tzafrir
|
Ethernet/SIP is going to be by far the most flexible.
You can have much longer cable runs without some kind of USB repeater
device. Switches are cheap, CAT5/6 is cheap.
You could put a Quintum Tenor AX 48 Port (for instance) in one section
of a building, campus, LAN (WAN if you are daring) and the server
could be anywhere, not tied by 15 or 30 foot USB cables. Then if you
are doing new wiring, you can run the shortest distance from the
location of the SIP FXS device to the phones.
You can have redundant, self healing links as well as link aggregation.
I cannot see how TDMoE or USB come anywhere close to this flexibility
and certainly don't see it being a fit for high port densities like
discussed.
I see TDM0E as something that a tech guy thought would be cool (and it
is but not very practical) and a USB device something suited for the
SoHo (but missing the scalability, redundancy, and flexibility that IP
gives.)
Thanks,
Steve Totaro
_______________________________________________
-- Bandwidth and Colocation Provided by http://www.api-digital.com --
asterisk-users mailing list
To UNSUBSCRIBE or update options visit:
http://lists.digium.com/mailman/listinfo/asterisk-users
|
--
Faraz R Khan
Chief Architect
Emergen Consulting Pvt Ltd
www.emergen.biz |
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nachogomez at gmail.com
Guest
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faraz.khan at emergen.biz
Guest
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| Posted: Sat Mar 08, 2008 9:41 am Post subject: [asterisk-users] FXS channel banks |
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| Quote: | Just think of a different alternative: If you consider the cost of a
24/32/48 FXS channel bank, vs. the cost of the PC used to driver it:
just put a simple PC at that end of the campus and attach the Astribank
to it.
|
A simple PC? Thats just asking for trouble. In my experience if this
is an enterprise, you would need atleast a HP ML 150 with redundant
PSU and Raid 5 + 1 spare disk, redundant fans EVERYWHERE!
Dont get me wrong. I think the idea of having a USB channel bank is
great- but deployment in distributed or a 'campus' network would be
very problematic compared to a quintum/grandstream SIP gateway
(completely solid state / no pc required/ consumes little power)
--
Faraz R Khan
Chief Architect
Emergen Consulting Pvt Ltd
www.emergen.biz |
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tzafrir.cohen at xorco...
Guest
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| Posted: Sat Mar 08, 2008 10:03 am Post subject: [asterisk-users] FXS channel banks |
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On Sat, Mar 08, 2008 at 07:41:50PM +0500, Faraz Khan wrote:
| Quote: |
| Quote: | Just think of a different alternative: If you consider the cost of a
24/32/48 FXS channel bank, vs. the cost of the PC used to driver it:
just put a simple PC at that end of the campus and attach the Astribank
to it.
|
A simple PC? Thats just asking for trouble. In my experience if this
is an enterprise, you would need atleast a HP ML 150 with redundant
PSU and Raid 5 + 1 spare disk, redundant fans EVERYWHERE!
|
For such a satelite server?
Get a small system with no moving parts. A bit more reliable (and less
noisy ) than such a server. Do use a reliable system as your main
server.
--
Tzafrir Cohen
icq#16849755 jabber:tzafrir.cohen at xorcom.com
+972-50-7952406 mailto:tzafrir.cohen at xorcom.com
http://www.xorcom.com iax:guest at local.xorcom.com/tzafrir |
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dumpexec at gmail.com
Guest
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| Posted: Sat Mar 08, 2008 11:35 am Post subject: [asterisk-users] FXS channel banks |
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Why not get a TDMoE multiplexer, check out http://spidermux.com/
On Sat, Mar 8, 2008 at 4:03 PM, Tzafrir Cohen <tzafrir.cohen at xorcom.com> wrote:
| Quote: | On Sat, Mar 08, 2008 at 07:41:50PM +0500, Faraz Khan wrote:
| Quote: |
| Quote: | Just think of a different alternative: If you consider the cost of a
24/32/48 FXS channel bank, vs. the cost of the PC used to driver it:
just put a simple PC at that end of the campus and attach the Astribank
to it.
|
A simple PC? Thats just asking for trouble. In my experience if this
is an enterprise, you would need atleast a HP ML 150 with redundant
PSU and Raid 5 + 1 spare disk, redundant fans EVERYWHERE!
|
For such a satelite server?
Get a small system with no moving parts. A bit more reliable (and less
noisy ) than such a server. Do use a reliable system as your main
server.
--
Tzafrir Cohen
icq#16849755 jabber:tzafrir.cohen at xorcom.com
+972-50-7952406 mailto:tzafrir.cohen at xorcom.com
http://www.xorcom.com iax:guest at local.xorcom.com/tzafrir
_______________________________________________
-- Bandwidth and Colocation Provided by http://www.api-digital.com --
asterisk-users mailing list
To UNSUBSCRIBE or update options visit:
http://lists.digium.com/mailman/listinfo/asterisk-users
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stotaro at totarotechn...
Guest
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| Posted: Sat Mar 08, 2008 11:50 am Post subject: [asterisk-users] FXS channel banks |
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On Sat, Mar 8, 2008 at 11:35 AM, Dumpolid Exeplish <dumpexec at gmail.com> wrote:
Maybe I am missing the concept, but why would you get a TDMoE
multiplexer for the OP's usage?
I can't really think under what circumstances this would be valuable.
Thanks,
Steve Totaro |
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faraz.khan at emergen.biz
Guest
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| Posted: Sun Mar 09, 2008 12:54 pm Post subject: [asterisk-users] FXS channel banks |
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yeah, boot off a flash card. true. guess use one of the xorcom servers
You guys should make one with pre-installed ABE for certain larger
customers.
Quoting Tzafrir Cohen <tzafrir.cohen at xorcom.com>:
| Quote: | On Sat, Mar 08, 2008 at 07:41:50PM +0500, Faraz Khan wrote:
| Quote: |
| Quote: | Just think of a different alternative: If you consider the cost of a
24/32/48 FXS channel bank, vs. the cost of the PC used to driver it:
just put a simple PC at that end of the campus and attach the Astribank
to it.
|
A simple PC? Thats just asking for trouble. In my experience if this
is an enterprise, you would need atleast a HP ML 150 with redundant
PSU and Raid 5 + 1 spare disk, redundant fans EVERYWHERE!
|
For such a satelite server?
Get a small system with no moving parts. A bit more reliable (and less
noisy ) than such a server. Do use a reliable system as your main
server.
--
Tzafrir Cohen
icq#16849755 jabber:tzafrir.cohen at xorcom.com
+972-50-7952406 mailto:tzafrir.cohen at xorcom.com
http://www.xorcom.com iax:guest at local.xorcom.com/tzafrir
_______________________________________________
-- Bandwidth and Colocation Provided by http://www.api-digital.com --
asterisk-users mailing list
To UNSUBSCRIBE or update options visit:
http://lists.digium.com/mailman/listinfo/asterisk-users
|
--
Faraz R Khan
Chief Architect
Emergen Consulting Pvt Ltd
www.emergen.biz |
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jra at baylink.com
Guest
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| Posted: Sun Mar 09, 2008 1:16 pm Post subject: [asterisk-users] FXS channel banks |
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On Sun, Mar 09, 2008 at 10:54:11PM +0500, Faraz Khan wrote:
| Quote: | | Quote: | Get a small system with no moving parts. A bit more reliable (and less
noisy ) than such a server. Do use a reliable system as your main
server.
|
yeah, boot off a flash card. true. guess use one of the xorcom servers
You guys should make one with pre-installed ABE for certain larger
customers.
|
Or, y'know, just go to a dedicated Ethernet FXS port server, which is
precisely where we started this conversation.
Cheers,
-- jra
--
Jay R. Ashworth Baylink jra at baylink.com
Designer The Things I Think RFC 2100
Ashworth & Associates http://baylink.pitas.com '87 e24
St Petersburg FL USA http://photo.imageinc.us +1 727 647 1274
Those who cast the vote decide nothing.
Those who count the vote decide everything.
-- (Joseph Stalin) |
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Guest
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| Posted: Wed Mar 19, 2008 2:09 am Post subject: [asterisk-users] FXS channel banks |
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| Quote: | What kind of information are you looking for? configuration or? If you
look in our manuals our cards and the Digium cards configure the same
in zaptel and zapata.
|
Hi James, I have purchased a CB24-FXS-UNIV and am using a TE412P card
with a Asterisk 1.4 box.
One port of the card is connected to an E1. I was told to connect a
second port to the Rhino box.
The rest of the procedure is a bit of a mystery to me at this stage but
I am ready to dive into it |
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