PSTN-PBX adapter options

[alewis]

Two FXO/FXS questions?:

a. I'm looking at building a very very small IP PBX. The size I'm looking at precludes PCI FXO/FXS cards, so wondering how to attach the PBX to the PSTN.

What options are there? I'm thinking of a USB device that will plug into the PSTN socket, and thence into the PABX.

Of course, I then need to attach handsets (either cordless or extension wiring) to the PABX.

The requirement is to attach the PBX to the PSTN, and NOT just interface a pstn phone to VOIP.

b. Is there a PCI-e equivalent of the good old X100P adaptors? I'm looking at putting PBXIAF on a server, but it only has PCI-e and PXI-X (and I dont want to drag the PXI-X slots down to 33/32)

 

[jroper]

A pstn gateway may be an option

Sangoma have USB FXO devices in Beta at the moment.

Joe

 

[wardmundy]

OpenVox has a great line of PCI-e cards.

 

[jmullinix]

The Sangoma USB devies has two FXO ports and retails for $139 US. I am pretty sure that it is out of beta, they just havn't updated their site.

 

[gregc]

Sangoma's A200 series can be configured with two FXS and two FXO ports and comes in a PCI-E flavor. It can also be ordered with hardware echo cancellation.

 

[bradcook]

There's also the option of an ATA, if you don't mind the adaptor being TCPIP network attached instead of physically attached to the server.

Something like the Linksys SPA-3102 offers 1 x FXS and 1 x FXO. Lots of info around on how to configure it (which is great coz the setup screens in the SPA can be a bit daunting).