Function The iSurf-1004/1008 series is an integrated access device (IAD) that combines the capabilities ofresidential voice gateway, network backup and residential switch/hub. This IAD series includes iSurf-1004 (4-port IAD) and iSurf-1008 (8-port IAD). iSurf-1004/1008 equipped with 4/8 analog phone ports, one survivable PSTN lifeline, one 10M/100M uplink port and one 10M/100M downlink port. As the integrated access device, the iSurf links POTS phones, PCs, IP set top boxes and other types of data devices to the broadband network via its Ethernet uplink port. Support multiple deployment scenarios Support multiple protocols : MGCP, H.248 and SIP Support both data and voice Support multiple network management options Support local billing Support PoE (optional)