The QuadroISDN is a 4 port BRI VoIP gateway that allows connectivity between the ISDN and a VoIP network. The QuadroISDN gateway can be configured to work as:

1. An ISDN expansion module for a Quadro IP PBX
2. A standalone VoIP gateway on a SIP network
3. An ISDN gateway for an Asterisk, 3CX, IP PBX server.

We were using this for a school with an Asterisk server and ISDN until they got Fibre. In excellent condition, have all manuals in PDF format.

Can help with configuration and installation if required.

No returns due to change of mind, inability to set up or network incompatibility. In all cases of return buyer pays for tracked return shipping. Original shipping costs aren't - refundable under any circumstances. Payment is expected within 3 business days.

Ask questions before bidding.

Courier may take longer or cost more depending on location eg Rural Delivery.