[asterisk-biz] ATA Bank for Asterisk, 400 phones

[Julian Lyndon-Smith]

How does the XR055 compare with, say, a TE412P ?

Does anyone have any non-subjective views ? ;)

Julian

Ruth Bridger wrote:
> I would like to add some information about the capacity of the USB 2.0
> connection. The USB 2.0 interface provides a theoretical speed of
> 480,000,000 bits per second. A typical uncompressed phone conversation uses
> about 64,000 bits per second per direction, plus some overhead; in total
> less than 200,000 bits per second per phone call is used. Thus, the
> theoretical concurrent number of conversations that the USB 2.0 interface
> can handle is 480,000,000 divided by 200,000: roughly 2,400 calls for a
> single USB 2.0 port. For more info, see
> http://www.xorcom.com/astribank-technology/usb2-interface.html
>
> Bottom line...the USB connection is not the bottleneck. Finding a PC with
> the required number of PCI slots would be a problem with the suggested
> Sangoma solution. 
>
> As for the channel banks, since the 1U Astribank supports 32 channels (as
> opposed to the typical 2U 24 channels supported by other types), the
> Astribank is obviously the better choice. For a point-by-point comparison,
> see
> http://www.xorcom.com/astribank-technology/astribank-vs-channel-banks.html
>
> I'd be happy to answer any other questions about this technology...
>
> Ruth Bridger
> Xorcom - Asterisk Based Hardware Solutions
>
> -----Original Message-----
> From: asterisk-biz-bounces at lists.digium.com
> [mailto:asterisk-biz-bounces at lists.digium.com] On Behalf Of Mitul Limbani
> Sent: Wednesday, January 07, 2009 08:36
> To: Commercial and Business-Oriented Asterisk Discussion
> Cc: Commercial and Business-Oriented Asterisk Discussion
> Subject: Re: [asterisk-biz] ATA Bank for Asterisk, 400 phones
>
> Greg,
>
> Pair of sangoma and we are talking of really powerful machine, I would  
> rather put two low cost server hardware or buy 2 x XR30xx series  
> hardware each connected with 8 astribank and can handle upto 800+  
> phones.
>
> USB is still powerful then PRI moreover its easy you dont have to open  
> up hardware thatmeans you are safe on warranty front.
>
> Regards,
> Mitul Limbani,
> Founder & CEO,
> Enterux Solutions Pvt Ltd,
> The Enterprise Linux Company(r),
> http://www.enterux.com/
>
>
> On 07-Jan-09, at 8:43, "Gregory Boehnlein" <damin at nacs.net> wrote:
>
>   
>>> I think you should have a look at xorcom astribank you can have 32
>>> ports in one bank and all you need is USB on you asterisk server. All
>>> the drivers are inside the official zaptel/dhadi drivers so
>>> installation is pretty much out of the box.
>>>       
>> He mentioned that he needed to have 400 phones. That makes for a lot  
>> of Astribanks, and I dare say probably more bandwidth than can  
>> reasonably be expected to push through a USB bus.
>>
>> While the idea is good, if I were building the solution, I would be  
>> looking at a pair of the Sangoma 8 port T1 cards w/ external channel  
>> banks.
>>
>>
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