3 Radio Channels Gateway
Key Features
Radio communication across multiple networks without distance limit
InterConverting between Radio group and IP networks
Interconnect Radio and GSM network
Support P2P connection without server
Support private DDNS service
Media NAT traversal
Support remote control management
Physical Features
PTT Port: 3
Power Adapter: DC 12V/2A
CPU: ARM11/700MHz
RAM: 128M
Flash: 8M
GSM Frequency: 850/900/1800/1900MHz
Max power consumption: 12W
Net Weight: 0.36kg
Size: 25*4*2.5(cm)
Color: Gray
Operating Temperature: 0－45℃
Working Humidity: 40％－90％ non-condensation
Soft Features
VoIP Protocols: SIP V2
Supply dynamic DNS service
Line Echo Cancellation
NAT Transversal and Router functions
Support IP voice stream to via a recording server
Highly stable embedded Linux operating system
Enhanced Features
Voice Code: g711(alaw/ulaw), g729, g723.1
Auto adapt jitter buffer
Router
Voice activity detection (VAD)
On line firmware upgrade
Multi-language: English and Chinese
Application
Assume there are several Radio groups in two different cities. Since the coverage of radio is limited, they are not able to communicate directly. RoIP302’s P2P scenario could implement the communication without distance limitations.