[asterisk-users] Dahdi interface flapping

[Gareth Blades]

On 30/07/13 15:36, Andre Goree wrote:
> /etc/dahdi/system.conf:
> span=1,0,0,ESF,B8ZS
> bchan=1-23
> dchan=24
> loadzone=us
>
The first '0' in your span line above indicated that asterisk is 
generating the timing source. Normally the network operator provides 
timing so I would expect this to be a '1'. This can be the cause of the 
issue you are seeing as each end will be using a different clock which 
can be out of sync or drift causing data corruption, signalling errors 
and the d channel going down.