3-PPT Port with GSM Module Cross-Network Gateway RoIP302M is developed based on the RoIP technology to bridge voice communications across multiple networks. It can connect up to 3 radio stations operated at different frequency bands simultaneously. These 3 radio stations can be configured in a single or multiple groups to communicate with another group which is defined in another RoIP device. This enables a very flexible configuration among various radio stations in order to form a single or multiple RoIP networks. With the built-in GSM and VoIP interfaces, RoIP-302 can also bridge voice communications among these networks.
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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
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
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
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.