Hardware > Home PBX > Specifications

VPBX Home Gateway System Specifications

Phone User Services: Place/Cancel Outgoing Calls; Answer Incoming Calls; Full Duplex Audio; Flexible Dial Plan Support; Fax Tone Detection (Pass Through); ITU T.38 Fax Support; PSTN Line Support (Dial and Backup); PSTN Emergency 911/999

Voice-over-IP (VoIP) protocols: SIPv2 - Session Initiation Protocol (RFC 3261, 3262, 3263, 3264); SDP - Session Description Protocol (RFC 2327); RTP - Real-Time Protocol (RFC 1889, 1890); RTCP - Real-Time Control Protocol (RFC 1889); RFC 2833 X-NSE Tone Events for SIP/RTP; RFC 2833 AVT Tone Events for SIP/RTP

Network Protocols: IPv4 - Internet Protocol Version 4 (RFC 791); TCP - Transmission Control Protocol (RFC 793); UDP - User Datagram Protocol (RFC 768); ICMP - Internet Control Message Protocol (RFC 792); RARP - Reverse Address Resolution Protocol (RFC 903); ARP - Address Resolution Protocol (RFC 826); DNS - Domain Name Server; DHCP Client - Dynamic Host Control Protocol (RFC 2131); NTP - Network Time Protocol (RFC 1305); SNTP - Simple Network Time Protocol (RFC 2030); STUN - Simple Traversal of UDP over NATs (RFC 3789); HTTP - HyperText Transfer Protocol; FTP - File Transfer Protocol (RFC 959. RFC 2228); TFTP - Trivial File Transfer Protocol (RFC 1350)

Voice Codecs: G.711 - Pulse Code Modulation; G.723.1 - 6.4 and 5.3 kbps ACELP/MP-MLQ; G.726 - 16, 24, 32 and 40 kbps ADPCM; G.728 - 16 kbps LD-CELP; G.729A - 8 kbps CS-ACELP; G.729B - Silence Detection/Comfort Noise Generation; iLBC - Internet Low Bitrate Codec

Telephony: Q.24 DTMF Generation with Zero Crossing Cutoff; Q.24 DTMF Detection exceeding Bellcore Specifications; Configurable Tone Generation for 4 Sets of Frequencies and 4 Sets of On/Off Cadence; Caller ID Type I (On-hook) Generation; Caller ID Type I (Off-hook) Generation; Caller ID Type I Detection; Caller ID Type II Detection

Line-echo cancellation: G.168 Line Echo Cancellation; Echo Canceller for Each Port; 16 ms Echo Length; Nonlinear Echo Suppression (ERL greater than 28 dB for f = 300 to 3400 Hz); Double-Talk Detection

Fax Support: G.711 Fax Pass-Through; T.38 - Real-Time Fax Over IP; T.38 using UDP; T.38 using RTP
Quality of Service: Layer 2 Class-of-Service (CoS) Tagging (802.1P); Layer 2 (802.1Q VLAN); Layer 3 Type-of-Service (ToS) Tagging (RFC 791/1349); Layer 3 DIFFServ (RFC 2475)

Data Network: Ethernet - 10baseT RJ-45; Ethernet - 10baseT/100baseTx RJ-45 (Optional); Ethernet WAN Port RJ-45; Ethernet LAN Port RJ-45; Configurable MAC Address (IEEE 802.3)

Analog Telephone Ports: FXS Analog RJ-11 Ports (#); Up to 5 REN; Configurable Terminating Impedance - 8 Settings; -48V Nominal Battery; 85V Ringing; Sinusoidal or Trapezoidal Ringing

PSTN Port: FXO Analog RJ-11 Ports (#); Lifeline Port (Processor Controlled Relay); Dial Plan Accessible; Relay Deactivated on Power Fail

Indicators: Tri-Color LEDs (Red, Orange, Green); POWER LED (Power, Registration, Use); LAN LED (Activity and Link Fail); MESSAGE LED (Message Waiting, Update Failure); LINE LEDs (Line Status)

Reset Button: System Reset; Reset Configuration to Factory Defaults when Held