[asterisk-users] Customer complains of noise on line I cannot reproduce.

[Gordon Henderson]

On Wed, 27 Feb 2008, Royce Souther wrote:

> I have setup a few Asterisk systems for customers using Digium TDM400 cards
> and Aastra phones. No problems with sound quality at all except at this one
> site.
>
> Every time I try their system I don't hear any problems but they tell me
> that it is really bad. They describe it a a loud scratching sound.
>
> Are there any tests that can be done to pinpoint the problem? Has anyone
> seen this before? Are there known causes for this?

One known casue that tripped me up recently - I'm getting old. Customer 
complained of a whistle in the headset of a GXP2000 after hanging up a 
call... I coudn't hear it, but the others in the office could - most of 
them were much younger than me )-:

Gordon