[Asterisk-Users] Cannot get two TE410Ps to operate correctly in the same machine

Peter Svensson psvasterisk at psv.nu
Fri Nov 26 10:16:54 MST 2004


On Fri, 26 Nov 2004, Andrew Kohlsmith wrote:

> On November 26, 2004 11:06 am, Patrick wrote:
> > Doesn't "sync source" mean that the card is generating its own clocking?
> > If your telco provides the clocking, the card should not.
> 
> 0 = don't use the remote clock for sync (use internal clock)
> 1 = use remote clock as card's primary clock source
> 2 = use remote clock as card's secondary clock source
> 3 = ...
> 
> secondary, tertiary and so on are only used if the primary (or secondary, and 
> so on) is down.
> 
> A sync source of 0 means self-clock.

I think you may be talking past each other. If the text "ClockSource" 
appears in /proc/zaptel/[1-8] that span is used as the current clock 
source. From what Marc has said it is the clock sorce for all spans on the 
same card.

There is a field "timing" in /etc/zaptel.conf that ranks incoming spans in 
the order they are to be considered as a clock source. If all active spans 
(presumably on a single card) have their timing set to 0 the card and thus 
all the spans will be clocked from an internal source.

Now, given what has been written on the bug tracker and here I suspect 
there is a bug in ztcfg. It should set up the clocking independently on 
the two cards. Perhaps it doesn't?

Peter





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