On Friday 20 April 2007 20:01, Adrian Marsh wrote:
> Hi All,
>
> I've a single 1.2.17 Asterisk system.  Gradwell here in the UK is used
> for PSTN calls via IAX2.
> Our 'net link is a dedicated 2Mb fibre connection (of which we have ever
> used 50% max bandwidth).  We've no E1/T1 links, everything is IP based.
>
> My boss complains that many of the calls he holds with others has a bad
> quality.  He also says that its not just him.
>

Iam using Gradwell in UK with SIP with several lines and I do not have these 
problems.
Try SIP and if the problem is gone check your IAX configuration. 
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