Date: Mon, 27 Feb 2006 15:01:54 -0600
From: "Brent Torrenga" < [EMAIL PROTECTED]>
Subject: [Asterisk-Users] Echo on PRI/BRI?
To: <[email protected]>
Message-ID: <[EMAIL PROTECTED] >
Content-Type: text/plain; charset="US-ASCII"
Howdy:
Does echo only occur on analogue PSTN lines, or can it also occur on PRI and
BRI lines? If so, for the same reasons? This is a part of our consideration
to transition to BRI.
Sincerely,
Brent A. Torrenga
[EMAIL PROTECTED]
Torrenga Engineering, Inc.
907 Ridge Road
Munster, Indiana 46321-1771
219.836.8918x325 Voice
219.836.1138 Facsimile
www.torrenga.com
Brent-
Echo can occur for all sorts of reasons- analog conversions as someone else already mentioned, 4 wire to 2 wire in particular- but could also occur in the IP path due to network issues, and can occur on any sort of digital or analog circuit due to various electrical or audio components. (one of the more commonly neglected causes is poor handsets, that do a bad job of isolating the speaker and microphone, or attempt to add sidetone incorrectly (sidetone is the slight echo you should hear of your own voice- it's very hard to hear, but without it, you get the feeling that you're talking to a dead wire). Conversion to BRI/PRI is a last step only, in my opinion, unless you have other compelling reasons to do so- there's a lot of other places to look first.
If you could describe more of your particular setup, I'd be happy to give more detailed description of where the problems might lie.
-Paul Davidson
PlanCommunications, LLC
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