The GW-521EW is a FXS gateway works as a bridging between local PSTN and IP network for voice and FAX services. The GW-521EW gateway provides two FXS ports connecting to local PSTN. IT is an interface to access PSTN with IP-PBX solution. A 10/100Base-TX interface connects local Ethernet network with IP phone and H.323 Gatekeeper or call manager. The data and voice service are working in a local Ethernet network and VoIP-based IAD (Internet Access Device), which is designed to interoperate with end-to-end fiber from major vendors to meet the worldwide market requirements of triple-play services.

The GW421F is a single mode Fiber and VoIP-based IAD (Internet Access Device), which is designed to interoperate with end-to-end fiber from major vendors to meet the worldwide market requirements of triple-play services. It is Class 1 laser product complying with EN 60825-1. The integrated Ethernet switch features automatic crossover-correction and auto-negotiation for easy connection to user's PCs or LAN environment.