It seems to me that if not all cards are clocked from the same source,
then each one should be able to get its own external clock. However,
card 0 has an external clock, but card 1 does not. Look at this:
#cd /proc/zaptel/
# grep ClockSource *
1:Span 1: TE4/0/1 "TE410P (PCI) Card 0 Span 1" HDB3/CCS ClockSource
Again, card 1 does not show up here and, of course, zttool reports it
as clocked internally. The first spans in the cards are configured to
be primary sync sources:
span=1,1,0,ccs,hdb3
span=5,1,0,ccs,hdb3
I am sure the line connected to span 5 is a good clock source. This
morning I exchanged this line with the one clocking span 1. Card 0
reports a valid clock, while card 1 does not.
Bug in zaptel or ztcfg?
Fernando
Peter Svensson wrote:
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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