Transfer called number from FSX port SPA8000 to FXO port analog PBX.

Question

Hello all!
I have CUCM 8.6 which connecting with SPA8000 by SIP trunk.
FXS port SPA8000 connect to FXO port analog PBX.
When I call from CUCM to analog PBX through SPA8000, SPA8000 does not pass called number in line.
Anybody have ideas?

Answer 1

Here is what I would recomend, I have set this up at several installations and it works well. The only difference would be that the ones that I have setup had more than 64K between sites but that is still doable so long as you keep the traffic on that link well regulated.
Anyhow. At each site install a VIC-2FXO and a VIC-2FXS into your 1760. You can use the higer density modules if you need more paths. Tie the FXOs to analog station ports on your PBX and the FXSs to analog CO ports. This may seem backwards but it is correct. Cisco's FXS is expecting to provide dialtone and the analog CO ports on the PBX are expecting to receive dial tone. Depending on what you are using for call processing ITS/CCME/CCM configure your gateway and your route pattern, etc. You will also need to be able to somehow access those fxs ports for outbound calls. You could have direct line access buttons on your phones and instruct users that when calling the remote site the must use lines 7 and 8 as an example. You could also setup a line pool code for these new lines.
Now when site A wants to call Site B, they dial whatever you wish them to dial. You do whatever translations you may wish prior to sending the call. Here is how the call flow works. User at site A accesses the line either by hitting a line button or dialing the line pool code. This grabs the analog line tied to one of the FXs ports on the router. The call is then sent over the 64K link. The router at Site B then uses one of the FXO ports to pass the call to an analog station port on the other PBX. To the PBX at site B it will appear as though someone pickedu picked up an analog station and dialed a local extension.
Hope this helps. If you need any further clarification on this let me know and I will try to clear it up further for you.