Complete Communications Engineering

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
TTY / TDD 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
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
FXO Analog RJ-11 Ports (#)
Lifeline Port (Processor Controlled Relay)
Dial Plan Accessible
Relay Deactivated on Power Fail
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
12V DC Input
0.8 Amp (2 FXS with 4 REN)