[Asterisk-Users] something between an ATA and a channel bank for a small office?

[Mark Eissler]

Your upstream bandwidth is far too small. Remember, a T-1 
(1.5Mbps/symmetrical) is used in a channelized setup to provide 24 
64kbps telephone lines (so to speak). Trying to stuff too many calls 
into 256kbps using a low bandwidth codec is highly optimistic. 
Definitely not something I would do in a business setup. One of the 
problems with these residential grade broadband services is that users 
anticipate that the bandwidth will ALWAYS be available to them and that 
is just not how these services are designed.

-mark


On Jan 19, 2005, at 9:02 AM, Michael Graves wrote:

> On Tue, 18 Jan 2005 22:11:55 +0000, nik martin wrote:
>
>> I have had very bad experiences with IAXYs so far.. I have pulled them
>> and will be attempting a refund shortly.  Bad audio, overheating and
>> shutting down until allowed to cool, etc. make it unusable in a 
>> business
>> environment.
>>
>> That said, is there a low-mid priced solution for a remote office to
>> connect to a home office runing asterisk?  There seems to be a hole in
>> the market for 6-8 person remote offices.  SIP isn't really an option
>> because the remote office is fairly low bandwidth (1.4 mb down, 256k 
>> up
>> ADSL).
>>
>> It seems my options are:
>> 1. Inexpensive SIP phones connected to a local asterisk server which
>> connects to my * server at the main office.
>>
>> 2. POTS phones + Asterisk + channel bank + t-1 card at remote office,
>> connected to my asterisk server at main office
>>
>> 3. POTS phones and multiple FXS cards in * server at remote office 
>> with
>> local T-1 line to terminate calls + IAX2 connection to main office for
>> inter-office calls.
>>
>> None of these seem ideal due to the complexity of having a remote *
>> asterisk server in the loop.
>
> It seems to me that your data rate is abitrarily low. If you could get
> a higher oubound data rate you'd have better results on average. I
> switchedmy home office ADLS from 1.5M/384k to 3.0M/768k and the impact
> was huge.
>
> There certainly are mid-market SIP phones available. I'm enamoured of
> my Polycom IP600, but the IP300 & 500 are less than $200 each. Avoiding
> FXOs entirely will eliminate a major headache. I think that the
> availability of business class features on SIP phones is worth more
> than the slight cost savings you might achieve using ATAs with analog
> phones.
>
> Polycom IP300 = $140
> Polycom IP500 = $210
>
> I'd be inclined to build an embedded Asterisk for the remote location
> and trunk back to your main office. You can also setup an account with
> an ITSP like Sixtel.net or Voipjet and place outgoing calls directly
> from the remote server.
>
> Michael
>
> --
> Michael Graves                           mgraves at pixelpower.com
> Sr. Product Specialist                          www.pixelpower.com
> Pixel Power Inc.                                 mgraves at mstvp.com
>
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>
>
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--
Mark Eissler, mark at mixtur.com
Mixtur Interactive, Inc. - at - http://www.mixtur.com