[Asterisk-Users] E1 Echo

[Rich Adamson]

> >>We have found that a relatively innocent change by the local incumbent 
> >>operator has forced us to modify our pstn gateways to change from 128 
> >>taps to 256 taps. 
> > 
> > 
> > What type of a change did they make?
> 
> Although it's a bit unclear how things evolved exactly (since no-one 
> ever tells us), a number of interconnection points throughout the 
> country were consolidated, significantly increasing the chance that 
> delay exceeded 128 taps.

Strange... I would never had expected consolidation to have that kind
of impact. It almost sounds like they have something in the E1 data stream
that buffers (and delays) content, maybe decoding and re-encoding in some
fashion.