asterisk users - Jun 2013 - moving calls from one E1 to another

Hello everyone.
I want to migrate an old PBX which uses the ?1-PRI from one Telecom to 
VoIP by transparently moving the numbers one by one. I mean that the 
numbers that the PBX handle must be transparently moved from one 
operator to another. The old connection to the PBX is ?1-PRI and we must 
preserve that because no one knows how to configure this PBX. So my idea 
is to connect a PC with 2 ports E1 module between the PBX and the old 
telecom. One port of the module will be connected to the telecom's wire 
and the other port will be connected to the PBX. This PBX will be 
powered with Asterisk of course so it will be able to connect by SIP 
trunk to the alternative VoIP telecom. So my question is will I be able 
to transfer the calls from one E1 port to other? Could I be able to 
specify the difference clock source for the both ports?

Thanks in advance.
Dimitar

Yes, you will be able to transfer calls between the E1 ports without a problem. 
As far as timing goes, the PBX will not be a clock source.  You need to
configuring your timing setup so that Asterisk takes timing from the Telecom PRI
and then sources clock to the PBX.  The PBX will take timing from Asterisk.

Sent from my iPad

On Jun 24, 2013, at 12:17 PM, Dimitar Dimitrov <ddimitrov at consult.bg>
wrote:
> Hello everyone.
> I want to migrate an old PBX which uses the ?1-PRI from one Telecom to VoIP
by transparently moving the numbers one by one. I mean that the numbers that the
PBX handle must be transparently moved from one operator to another. The old
connection to the PBX is ?1-PRI and we must preserve that because no one knows
how to configure this PBX. So my idea is to connect a PC with 2 ports E1 module
between the PBX and the old telecom. One port of the module will be connected to
the telecom's wire and the other port will be connected to the PBX. This PBX
will be powered with Asterisk of course so it will be able to connect by SIP
trunk to the alternative VoIP telecom. So my question is will I be able to
transfer the calls from one E1 port to other? Could I be able to specify the
difference clock source for the both ports?
> 
> Thanks in advance.
> Dimitar
> 
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