asterisk users - Feb 2005 - BRIstuff - synchronization with PSTN?

it's a bug in zttool



On Sat, 26 Feb 2005 18:40:19 +0000, Niksa Baldun <niksa.baldun@lumiss.hr>
wrote:
> Hello,
> 
> for a long time I've been having problems with analog modems and faxes
> communicationg over ISDN BRI lines. Now I began to suspect that this is
> due to * being out of sync with the PSTN. I have a quadBRI card with
> first two ports connected to PSTN, and defined as follows:
> 
> span=1,1,0,ccs,ami
> span=2,2,0,ccs,ami
> 
> This should mean that spans 1 and 2 are used as primary and secondary
> synchronization sources. However, when I check the spans with zttool it
> says:
> 
> Sync source: Internally clocked
> 
> Does this mean that ISDN interface is not synchronized with the PSTN? If
> so, why, and how can I correct it?
> 
> Thanks
> 
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-- 
Michal Bielicki
http://www.asterisk.com.pl/

Hello,

for a long time I've been having problems with analog modems and faxes
communicationg over ISDN BRI lines. Now I began to suspect that this is
due to * being out of sync with the PSTN. I have a quadBRI card with
first two ports connected to PSTN, and defined as follows:

span=1,1,0,ccs,ami
span=2,2,0,ccs,ami

This should mean that spans 1 and 2 are used as primary and secondary
synchronization sources. However, when I check the spans with zttool it
says:

Sync source: Internally clocked

Does this mean that ISDN interface is not synchronized with the PSTN? If
so, why, and how can I correct it?

Thanks