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Key Features
- Open Standard VoIP Protocols (ITU H.323 V4 and IETF SIP
V2)
- Single or Multiple Server Registrations
- Speech quality ensured by QoS at the Ethernet and IP
layers and comprehensive jitter buffer
- Line Echo Cancellation
- VLAN and QoS support
- NAT Transversal and Router functions
- Voice prompts, HTTP Web, Auto Provision support for configuration
and updates
- Highly stable embedded Linux operating system in high
performance ARM 9 Processor
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Basic Features
- Two 10/100 Ethernet circuits connect to the LAN and an
additional device
- Four RJ-11 FXO ports for PSTN terminations (PSTN
lines or PBX's extensions)
- LEDs for Power, Ready, Status, WAN, PC, FXO ports
- Call forward from PSTN to VoIP and VoIP to PSTN
- Dial in mode or dial out mode only
- Dial Plan
- Password protection for both PSTN dial in or dial
out
- Retransmit PSTN Caller ID to VoIP terminal
Enhanced Features
- Dynamic selection of codec
- Advanced jitter buffer
- Automatic traversal of NAT and firewall
- VLAN / Qos
- Router
- Echo cancellation for Speakerphone
- Comfort noise generation (CNG)
- Voice activity detection (VAD)
- Auto provisioning (requires auto provisioning
server)
- On line firmware upgrade
- Multi-language support: English and Chinese
Supported Standards
- ITU: H.323 V4, H.225, H.235, H.245, H.450
- RFC 1889 - RTP/RTCP
- RFC 2327 – SDP
- RFC 2833 – RTP Payload for DTMF Digits, Telephony
Tones and Telephony Signals
- RFC 2976 – SIP INFO Method
- RFC 3261 – SIP
- RFC 3264 – Offer/Answer model with SDP
- RFC 3515 – SIP REFER Method
- RFC 3842 – A Message Summary and Message Waiting
Indicator
- RFC 3489 – Simple Traversal of User Datagram
Protocol (UDP) Through Network Address Translators (NATs)
- RFC 3891 – SIP “Replaces” Header
- RFC 3892 – SIP Referred-By Mechanism
- draft-ietf-sipping-cc-transfer-04 –
Session Initiation Protocol Call Control - Transfer
- Codec: G.711 (A/µ law), G.729A/B, G.723.1
- DTMF: RFC 2833, In-band DTMF, SIP INFO
Physical and Environmental
Operating temperature: 10°C to 40°C (50°F to
104°F)
Storage temperature: 0°C to 50°C (32°F to
122°F)
Weight: 1.9 kg (4.2 lb)
(Including AC/DC Adapter)
Size: mm (W) x mm (L) x mm (H)
( ” x ” x ”)
Power: 12 Vdc 500 mA (AC/DC
adapter included). Classification 0 under IEEE 802.3af on CN2x4
Safety:
Emissions:
Immunity:
Other Approval:
Warranty: one year
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