 | 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) |
 | Voice gateway: |
 | Session Initiation Protocol (SIP) v2 (RFC 3261, 3262, 3263, 3264) |
 | SIP proxy redundancy - dynamic via DNS SRV, A records deregistration with primary SIP proxy server |
 | SIP support in network address translation (NAT) networks (including Serial Tunnel [STUN]) |
 | Highly secure (encrypted) calling via prestandard implementation of Secure RTP |
 | Codec name assignment |
 | Voice algorithms: |
 | G.711 (A-law and µ-law) |
 | G.726 (16/24/32/40 kbps) |
 | G.729 A |
 | G.723.1 (6.3 kbps, 5.3 kbps) |
 | Dynamic payload |
 | Adjustable audio frames per packet |
 | Fax capability: |
 | Fax tone detection pass-through |
 | Fax pass-though - using G.711 |
 | Dual-tone multifrequency (DTMF): in-band and out-of-band (RFC 2833) (SIP info) |
 | Flexible dial plan support with interdigit timers and IP dialing |
 | Call progress tone generation |
 | Jitter buffer - adaptive |
 | Frame loss concealment |
 | Full duplex audio |
 | Echo cancellation (G.165/G.168) |
 | Voice activity detection (VAD) with silence suppression |
 | Attenuation/gain adjustments |
 | Flash hook timer |
 | Message waiting indicator (MWI) tones |
 | Visual messaging waiting indicator (VMWI) via frequency shift keying (FSK) |
 | Polarity control |
 | Hook flash event signaling |
 | Caller ID generation (name and number) - Bellcore, DTMF, European Telecommunications Standards Institute (ETSI) |
 | Music on hold client |
 | Streaming audio server - up to 10 sessions |
 | Security: |
 | Password-protected system reset to factory default |
 | Password-protected administrator and user access authority |
 | Provisioning/configuration/authentication: |
 | HTTPS with factory-installed client certificate |
 | HTTP digest - encrypted authentication via MD5 (RFC 1321) |
 | Up to 256-bit Advanced Encryption Standard (AES) encryption |
 | Provisioning, administration, and maintenance: |
 | Web browser administration and configuration via integral web server |
 | Telephone keypad configuration with interactive voice prompts |
 | Automated provisioning and upgrade via HTTPS, HTTP, Trivial File Transfer Protocol (TFTP) |
 | Asynchronous notification of upgrade availability via NOTIFY |
 | Nonintrusive, in-service upgrades |
 | Report generation and event logging |
 | Stats in BYE message |
 | Syslog and debug server records - per-line configurable web browser |
 | Physical interfaces: |
 | One 10BASE-T RJ-45 Ethernet port (IEEE 802.3) |
 | 2 RJ-11 FXS phone ports - for analog circuit telephone device (tip/ring) |
 | Subscriber line interface circuit (SLIC): |
 | Ring voltage: 40-55 volts root mean square (Vrms) configurable * |
 | Ring frequency: 10-40 Hz * |
 | Ring waveform: trapezoidal and sinusoidal * |
 | Maximum ringer load: 3 ringer equivalence numbers (RENs) |
 | On-hook/off-hook characteristics: |
 | On-hook voltage (tip/ring): -50V nominal |
 | Off-hook current: 25 mA min |
 | Terminating impedance: 8 configurable settings, including North America 600 ohms, European CTR21 |
 | Regulatory compliance: FCC (Part 15, Class B), cUL, CE, IC-003, A-Tick |
 | Power supply: |
 | DC input voltage: +5V DC at 2.0A max. |
 | Power consumption: 5W |
 | Switching type (100-240V) automatic |
 | Power adapter: 100-240V - 50-60 Hz (26-34 VA) AC input, 1.8 m cord |
 | Indicator lights/LED: Phone1, Phone2, Internet, Power |
 | Documentation: |
 | Quick-start installation and configuration guide |
 | User guide |
 | Administration guide - service providers only |
 | Provisioning guide - service providers only |
 | Dimensions: 3.98 x 3.98 x 1.10 in. |
 | Unit weight: 5.40 oz (153 g) |
 | Operating temp.: 32º to 113ºF (0º to 45ºC) |
 | Storage temp.: -77º to 158ºF (-25º to 70ºC) |
 | Operating humidity: 10% to 90% noncondensing |
 | Storage humidity: 10% to 90% noncondensing |
 | Product Warranty: 1-year limited hardware warranty with return to factory replacement and 90-day limited software warranty |