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 [EMAIL PROTECTED]
Sr. Product Specialist www.pixelpower.com
Pixel Power Inc. [EMAIL PROTECTED]
o713-861-4005
o800-905-6412
c713-201-1262
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Mark Eissler, [EMAIL PROTECTED]
Mixtur Interactive, Inc. [EMAIL PROTECTED] http://www.mixtur.com
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