Cross-network SIP RoIP gateway(RoIP102), Radio,VoIP,GSM,Pulic Anounce

  The Cross-network SIP RoIP gateway(RoIP102) is designed to convert the audio and PTT signals in a radio terminal into IP packets and then transmit the data via the IP networks. The challenge in this technology is to insure that the audio is transmitted in real time and the PPT control signal is transmitted immediately and reliably. The radio range is general limited by the restricted transmitting power, the antenna sensitivity, and other environmental factors.

Key Features

Open Standard VoIP Protocols (IETF SIP V2)

Two 10/100 Ethernet for WAN / LAN connections

Supply dynamic DNS service

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

Support IP voice stream to via a recording server

Highly stable embedded Linux operating system in high performance ARM 9 Processor

Basic Features

Support one PTT port

LEDs for Power, Ready, Status, WAN, PC, FXS

Call Forward, Call Hold, Call Transfer

Dial Plan

Caller ID

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

Hardware specifications
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:   0.35 kg (4.2 lb) (Including AC/DC Adapter)

Power: 12 Vdc 2A  (AC/DC adapter included)
Warranty time: 1 year