The HandyTone 488 is a next generation Internet data, voice, fax and PSTN “all-in-one” integrated access device based on SIP standard.  This ATA features a high-level of integration including an integrated router, NAT, DHCP server, 1 port FXS telephone gateway, and 1 port fully programmable FXO gateway for toggling operations between SIP and PSTN networks, market-leading superb sound quality, rich functionalities, and a compact design.
HandyTone 488 = 1-FXO/1-FXS/2-Ethernet. End Of Life Product : new reference : Grandstream HandyTone 503.