[Asterisk-Users] Zaptel card AND Ztdummy together?

[Rod Bacon]

In case anyone is interested, loading Ztdummy AND a card driver at the same time will result in unpredictable timing issues.

We heard intermittent echo/feedback on PRI channels.


Rod Bacon wrote:
> I had a weird (unforeseen) situation today. We have a remote office with 
> an * server and ISDN 10 service. We connect to each other over an IAX 
> trunk with G729.
> 
> Today, some of Sydney experienced a power surge which knocked out their 
> ISDN services. Without a clock source on their PRI card, my IAX calls to 
> them resulted in one-way audio (they could hear me, but I not them).
> 
> Is it possible to load *both* the relevant card driver *and* ztdummy to 
> guard against this occurrance?
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