Andrew Kohlsmith wrote:
Wow you're the first person I've seen using a combination of T1 and E1 on the same card. I wonder if this has something to do with it (i.e. a bug in the drivers).
Based on my understanding of these cards, I don't think it's possible for this to work.
The framer chip on the board will sync itself to the incoming streams and recover the data, so that _might_ work. What will _not_ work properly is the outgoing streams; all the streams leaving the card are clocked using the same clock (either the on-board clock, or the currently selected "span" clock).
When you set a span to clock source "1" in zaptel.conf, that makes it the preferred transmission clock source for the _entire card_. If that span is down, the span marked "2" becomes the source for the card. If none of the spans with non-zero preferences are up, the card uses its internal source to clock the transmissions.
Ok. I got that. But when I put another PRI from another telco (I use it for Dial clients) it "syncronizes". The clock differnce appear, but this Telco doesn't send me any alarms.
I am in contact to Digium support and they did not say any thing about using E1 and T1 in the same card.
I can't understand why the clock synchronize when clock on span 4 is set to 0 and when it is set to 1, I get that 443 bps difference in the clocks.
The channel bank at the E1s work just fine at both conditions.
[]s -- Alex G Robertson NOC - Microlink
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