[Asterisk-Users] Should I choose DSL @ 1.5 or a full T1?

[Damon Estep]

You are aware that DSL (even SDSL) is half duplex and a T1 is full
duplex, right?

1.5m sdsl can only do 768 sustained duplex, or 1.5 out 0 in, or 0 out
1.5 in. a T1 will do 1.5 in and 1.5 out sustained.

This is due to a separate transmit and receive path on a t1 and a shared
path on sdsl.

The s in sdsl means symmetrical, not duplex, that is that the signaling
rate is the same in either direction, but still half duplex.

For VoIP a t1 is worth double what a 1.5 sdsl is because of the duplex
nature of the traffic, unlike most internet that is download-centric.

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Wiley
Siler
Sent: Monday, June 13, 2005 9:43 AM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: RE: [Asterisk-Users] Should I choose DSL @ 1.5 or a full T1?

Speakeasy SDSL Is 1.5 Megs, is business class (so you get an SLA) and
only costs around $100 per month. 

W

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Robert
Goodyear
Sent: Friday, June 10, 2005 7:02 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [Asterisk-Users] Should I choose DSL @ 1.5 or a full T1?


On Jun 10, 2005, at 6:38 PM, Michael Welter wrote:

> Barton Fisher wrote:
>> I'm looking to expand my bandwidth for my Asterisk PBX.  Why should I

>> choose a T1 over DSL for my asterisk server?  I found someone 
>> offering T1's for $290 a month + Loops or 3 Meg for $561 a month + 
>> Loops.  Is this a good deal?
>>  Thanks
>>  Bart
>> ---------------------------------------------------------------------
>> -
>> --
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> Where are you located?  What CLEC gives you a T-1 for $290?
>

FWIW I provisioned a PRI and a DS-1 for $300 each. Don't know if I'm
getting a break for having a voice and a data circuit broken out from
one fiber drop, but that's what I'm paying here in Orange County. Also,
I had a business cable modem before, which was *allegedly* not shared
for business customers (suspicious) and the throughput was a roller
coaster, as was the latency. The DS-1 cleared all that up.

/rg

Robert Goodyear
Brand Up LLC
http://www.brand-up.com

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