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VoIP Support SIP 2.0 (RFC3261) or IAX2 and correlative RFCs Full duplex hands-free speakerphone NAT transverse:support STUN client SIP support SIP domain, SIP authentication (none, basic, MD5), DNS name of server, Peer to Peer/ IP call SIP support 2

Hardware Segment LCD Wall mounting Full duplex speaker Interfaces WAN * 1 LAN * 1 RJ9 handset Jack *1 RJ9 headset Jack * 1 Power jack * 1 Electric requirements Power adapter: output DC 12V/450 mA Operating requirement Operation temperature: 0 to 40 C ( 32 to 104F) Storage temperature: -30 to 65 C (-22 to 149F) Humidity: 10 to 90% no dew Compliance Certificates CE: EN55024 EN55022 FCC: part 15 ROHS in EU ROHS in China