[asterisk-users] Moving from DSL to T1

[Kevin Keane]

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Steve Edwards
Sent: Sunday, September 12, 2010 5:57 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [asterisk-users] Moving from DSL to T1

On Sun, 12 Sep 2010, Kevin Keane wrote:

> What really matters is the latency, and T-1 is a huge improvement over 
> DSL in that area. The easiest way to measure latency is the ping time 
> to a server that is “close to you” Internet-wise. A DSL has latencies 
> of between 40ms (if it’s extremely good and not too many other people 
> are using it) and 1000ms (if there is a problem somewhere). A good T-1 
> may have latencies as low as 5 ms or so. Also, with a T-1 the 
> bandwidth is guaranteed and bidirectional. With a DSL line, you may 
> get burstable bandwidth – you don’t actually have that bandwidth, you 
> just get to compete for excess bandwidth with your neighbors.

>You are confusing DSL with cable.

Both, actually. The latency numbers are actual numbers measured at a customer site.

The sharing of excess bandwidth also happens with both, just in different places.