Zyxel Prestige 2002L VoIP Analog Telephone Adapter, LAN, MDI/MDIX, External, Web-based, 12V AC, 312 g Zyxel Prestige 2002L VoIP Analog Telephone Adapter. LED indicators: LAN. Switching protocols: MDI/MDIX. Interface: External. Management platform: Web-based. Power requirements: 12V AC