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Specifications
Data Networking● MAC address (IEEE 802.3) ● IPv4 (RFC 791), upgradable 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) ● DHCP server (RFC 2131) ● Point-to-Point Protocol over Ethernet (PPoE) client (RFC 2516) ● Internet Control Message Protocol (ICMP) (RFC 792) ● TCP (RFC 793) ● User Datagram Protocol (UDP) (RFC 768) ● Real Time Protocol (RTP) (RFC 1889, 1890) ● Real Time Control Protocol (RTCP) (RFC 1889) ● Differentiated Services (DiffServ) (RFC 2475), type of service (ToS) (RFC 791, 1349) ● VLAN tagging (IEEE 802.1p) ● Simple Network Time Protocol (SNTP) (RFC 2030) ● Upload data rate limiting-static and automatic ● Quality of service (QoS)-voice packet prioritization over other packet types ● MAC address cloning ● Port forwarding ● Session Initiation Protocol (SIP) channels support both UDP and TCP transport ● VPN pass-through with IP Security encapsulating security payload (IPsec ESP), Point-to-Point Tunneling Protocol (PPTP), and Layer 2 Tunneling Protocol (L2TP)● MAC address (IEEE 802.3) ● IPv4 (RFC 791) ● Address Resolution Protocol (ARP) ● DNS A record (RFC 1706), SRV record (RFC 2782) ● Dynamic Host Configuration Protocol (DHCP) client (RFC 2131) ● DHCP server (RFC 2131) ● Point-to-Point Protocol over Ethernet (PPoE) client (RFC 2516) ● Internet Control Message Protocol (ICMP) (RFC 792) ● Transport Control Protocol (TCP) (RFC 793) ● User Datagram Protocol (UDP) (RFC 768) ● Real Time Protocol (RTP) (RFC 1889, 1890) ● Real Time Control Protocol (RTCP) (RFC 1889) ● Differentiated Services (DiffServ) (RFC 2475), type of service (ToS) (RFC 791, 1349) ● VLAN tagging (IEEE 802.1p) ● Simple Network Time Protocol (SNTP) (RFC 2030) ● Upload data rate limiting: static and automatic ● Quality of service (QoS): voice packet prioritization over other packet types ● MAC address cloning ● Port forwarding ● SIP channels support both User Datagram Protocol (UDP) and TCP transport ● VPN pass-through with IP Security encapsulating security payload (IPsec ESP), Point-to-Point Tunneling Protocol (PPTP), and Layer 2 Tunneling Protocol (L2TP)
Voice Gateway● SIP v2 (RFC 3261, 3262, 3263, 3264) ◦ SIP proxy redundancy-dynamic via DNS SRV, A records ◦ Reregistration with primary SIP proxy server ● SIP support in Network Address Translation (NAT) networks (including Serial Tunnel [STUN]) ● Secure (encrypted) calling via prestandard implementation of Secure RTP ● Codec name assignment ◦ 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 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 ● Comfort noise generation (CNG) ● QoS (Ethernet port upstream bandwidth control, physical port, MAC address, application) ● Attenuation/gain adjustments ● Flash hook timer ● Message waiting indicator (MWI) tones ● Visual message 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 ● System dial-on-demand routing (DDR) synchronous dynamic RAM (SDRAM)-16 MB ● System flash ROM-4 MB● SIP version 2 ● Dual-tone multifrequency (DTMF) tone detection and generation ● Voice Activity Detection (VAD) ● Comfort Noise Generation (CNG) compatible ● Silence suppression ● Call waiting, call waiting caller ID (FXS ports only) ● Caller ID with name/ number ● Caller ID blocking ● Call forwarding: no answer, busy, all ● Do not disturb ● Call transfer, call return, call back on busy ● Fax: G.711 pass-through or real-time fax over IP via T.38 fax relay (T.38 support is dependent on fax machine and network/transport resilience) ● Supports multiple voice codecs: G.711a, G.711u, G.726, G.729A, G.723.1 ● SIP over TLS ● Three-way conference calling with local mixing ● Per-call authentication and associated routing ● Call blocking with toll restriction ● Delayed disconnect ● Distinctive ringing: calling and called number ● Off-hook warning tone ● Selective/anonymous call rejection ● VoIP to PSTN (USA) service call origination and termination ● PSTN (USA) to VoIP service call origination and termination ● Forward calls to VoIP service: selective, authenticated, all ● Forward calls to PSTN service: selective, authenticated, all ● Automatic PSTN fallback (loss of power or IP service to unit, with quiescence to normal operations): fixed fallback pairing of FXS ports to FXO ports ● Advanced inbound and outbound call routing ● Independent configurable dial plans (1 per port) ● Force PSTN disconnection
Physical interfaces● 8-port standard FXS voice ports (RJ-11) ● RJ-21 (50-pin telco connector) multiport voice connection ● 1 WAN 100BASE-T RJ-45 Ethernet Port (IEEE 802.3) ● Reset button● 4 RJ-11 FXS phone ports for analog circuit telephone device(s) (tip/ring) ● 4 RJ-11 FXO line ports for telco or PABX or KTS connection(s) ● RJ-21 (50-pin telco connector) multiport voice connection ● 1 WAN 100BASE-T RJ-45 Ethernet port (IEEE 802.3) ● 1 AUX 100BASE-T RJ-45 Ethernet port (IEEE 802.3) for Maintenance
Subscriber line interface circuit (SLIC)● Ring voltage: 40–90 Vpk configurable ● Ring frequency: 20–25 Hz ● Ring waveform: trapezoidal ● Maximum ringer load: 5 ringer equivalence numbers (RENs) ● On-hook/off-hook characteristics: ◦ On-hook voltage (tip/ring): -46 ~ -56V ◦ Off-hook current: 18–25 mA ◦ Terminating impedance: 600 ohm resistive or 270 ohm + 750 ohm ● 150 nF complex impedance ● Frequency response 300–3400 Hz ● Return loss (600 ohm, 300–3400 Hz) up to 20 dB ● Insertion loss (1 Vrms at 1 kHz) 3–4 dB ● Total harmonic distortion (THD) (350 mV peak at 300 Hz) up to 3% ● Idle channel noise-72 dB (typical) ● Longitudinal balance 55 dB (typical) ● Off-hook threshold (line seizure) Rdc < 1000 ohm ● On-hook threshold (line release) Rdc >10000 ohm ● Rdc DC supervisory range Rdc > 450 ohm● Ring voltage: 40–90 Vpk configurable ● Ring frequency: 20–25 Hz ● Ring waveform: trapezoidal ● Maximum ringer load: 5 ringer equivalence numbers (RENs) ● On-hook/off-hook characteristics: ● On-hook voltage (tip/ring): -46 ~ -56V ● Off-hook current: 18–20 mA ● Terminating impedance: 600 ohm resistive or 270 ohm + 750 ohm ● 150 nF complex impedance ● Frequency response 300–3400 Hz ● Return loss (600 ohm, 300–3400 Hz) up to 20 dB ● Insertion loss (1 Vrms at 1 kHz) 3–4 dB ● Total harmonic distortion (THD) (350 mV peak at 300 Hz) up to 3% ● Idle channel noise 72 dB (typical) ● Longitudinal balance 55 dB (typical) ● Off-hook threshold (line seizure) Rdc < 1000 ohm ● On-hook threshold (line release) Rdc >10000 ohm ● Rdc DC supervisory range Rdc > 450 ohm
Regulatory complianceFCC (Part 15 Class B), CE, ICES-003, C-Tick certification, Restriction of Hazardous Substances (RoHS), UL● IEC 60950-1:2005, Second Edition, with all country deviations ● AS/NZS 60950-1:2003, First Edition ● CAN/CSA 22.2 No. 60950-1-05, Second Edition ● UL 60950-1, Second Edition, 2005 ● EN55024 ● AS/NRZ 3548:1992 Class A ● CFR 47 Part 15 Class A ● EN55022 Class A ● ICES-003, Issue 2, Class A, April 1997 ● Industry Canada CS-03 ● TIA-968-A, Addendum 1, 2, 3, 4, 5 ● TBR21: January 1998 ● Australia AS/ACIF S002: 2005 ● Australia AS/ACIF S003: 2008 ● New Zealand PTC220: 2008
Power supply ● Switching type (100–240V) automatic ● DC input voltage: 12V DC at 3.0A max. ● Power adapter: 100–240V, 50–60 Hz AC input● Switching type (100–240V) automatic ● DC input voltage: 12V DC at 3.0A max. ● Power adapter: 100–240V, 50–60 Hz AC input
LEDsPower, Ethernet, Voice Status, Phone 1 through 8 ● Power, Ethernet, Voice Status, Phone 1 through 4, Line 1 through 4
Environmental
Dimensions (W x H x D)6.69 x 1.54 x 8.66 in. (170 x 39 x 220 mm)6.69 x 1.54 x 8.66 in. (170 x 39 x 220 mm)
Unit weight2.85 lb (1.30 kg)2.85 lb (1.30 kg)
Operating temperature32° to 113°F (0° to 45°C)32° to 113°F (0° to 45°C)
Storage temperature-13° to 185°F (-20° to 85°C)–13° to 185°F (–20° to 85°C)
Operating humidity10% to 90% noncondensing, operating and nonoperating10% to 90% noncondensing
Storage humidity10% to 90% noncondensing, operating and nonoperating10% to 90% noncondensing