[Asterisk-Users] ISDN master clock issue ?

[Tristan]

The fact is that I have 2 different E1 (euroisdn) providers and an E1 
(euroisdn) connection to a Matra PBX...

The PBX needs to be master and as far as I know the PSTN providers needs 
it too...

So I want to be sure that the quad E1 card I'll buy will work without 
troubles in this kind of setup...

Can I only put the synchro to the PBX and forget about the PRI providers ?



Rich Adamson a écrit :
> Tristan wrote:
>> Hi,
>>
>> Just a little question about digium/sangoma difference of behaviour...
>>
>> I need to setup 3 E1 connections to 3 different ISDN clock provider ...
>> Can the TE411P handle this per span or do I have to buy a Sangoma one ?
>
> The digium card has a single on-board clock and you choose which of 
> the three PRI's you want to sync to.  The Sangoma card has an on-board 
> clock for each PRI, therefore you can sync each clock to its 
> respective PRI.
>
> However, there is seldom a need to truly sync to all three at the same 
> time.  In very general terms, all PRI providers sync their equipment 
> to a higher level clock (their upstream provider), negating the need 
> for you to sync to each. Is there some specific implementation that 
> you're thinking of that "requires" each E1 port to sync to their 
> respective provider?
>
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