Features
Telephony
• Two voice ports (RJ-11) for analog phones or fax machines
• Impedance agnostics - eight configurable settings
• Call waiting, cancel call waiting, call waiting caller ID
• Caller ID with name/number (multinational variants)
• Caller ID blocking
• Call forwarding: no answer, busy, all
• Do not disturb
• Call transfer
• Three-way conference calling with local mixing
• Message waiting indication - visual and tone based
• Call return
• Call back on busy
• Call blocking with toll restriction
• Delayed disconnect
• Distinctive ringing - calling and called number
• Off-hook warning tone
• Selective/anonymous call rejection
• Hot line and warm line calling
• Speed dialing of eight numbers/addresses
• Music on hold
Specifications
Data networking
• MAC address (IEEE 802.3)
• IPv4 (RFC 791) upgradeable to v6 (RFC 1883)
• Address Resolution Protocol (ARP)
• DNS-A record (RFC 1706), SRV record (RFC 2782)
• Dynamic Host Configuration Protocol (DHCP) client (RFC 2131)
• Internet Control Message Protocol (ICMP) (RFC 792)
• TCP (RFC 793)
• User Datagram Protocol (UDP) (RFC 768)
• Real Time Protocol (RTP) (RFC 1889) (RFC 1890)
• Real Time Control Protocol (RTCP) (RFC 1889)
• Differentiated Services (DiffServ) (RFC 2475), type of service (ToS) (RFC 791/1349)
• Simple Network Time Protocol (SNTP) (RFC 2030)