These FXO gateways offer the ability to seamlessly connect multiple locations and all devices within an office to any hosted or on premise IP PBX network to make deployments as easy as possible.8 FXS ports, 2 10/100 Mbps ports and supports SIP video, 2 SIP server profiles per system.Supports simultaneous 3-way voice conferencing per port. Designed and tested for full interoperability with leading IP-PBXs, soft-switches and SIP-based environments