[Asterisk-Users] Problem connecting a TE410P to an E1/IP equipment

Johan Bilien jobi at via.ecp.fr
Wed Feb 23 11:40:47 MST 2005


On Wed, Feb 23, 2005, Kevin P. Fleming wrote:
> >But why would I only have a LOF error on one side?
> 
> Clocking issues, probably. You have a mismatch in clock source, framing 
> types or the like somewhere :-(

Both end are configured for ccs hdb3. For clock, I used
span=1,1,0,ccs,hdb3

As I understand this means that the card will get its synchronization
source from the other end right? And at the other end I have configured
the equipment to take its source from the system clock, or from another
E1 link. None of them removed the LOF alarm on the link to my asterisk
:(

> 
> >What does the Down mean here? Is it an administrative down state, or one
> >that comes from the alarms?
> 
> Yes, "Down" here means the span is down, Asterisk is not able to 
> communicate over the D-channel to the other end to bring the span up. 
> You will see this even if the link is running perfectly, if the other 
> end has been forced "down" (which is common with telcos when a new 
> circuit is brought up).

The interface is 'admin up' on the other side. 

Thanks,
Johan.



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