[Asterisk-Users] Asterisk - fax - spandsp

[Peter Svensson]

On Mon, 16 May 2005, Rich Adamson wrote:

> It doesn't make any difference. The pcm data that arrives from the telco
> is buffered in the zaptel and/or asterisk code, and sent out the second
> T1 card as soon as it can. That buffering reduces (or eliminates) the
> need to sync one T1 card to another.  However, if the clock on the second 
> card were "way off" frequency, there could be a missed pcm frame from
> time to time. The missed frame would not even be noticed by users in

Any frequency error will eventually lead to dropped frames, and this is as 
it should be. For digital transfers this can cause problems. For voice it 
is normally a non-issue.

Peter