Product Details

Specification:

-built-in SIP server

-Two 10/100 Base

-T Ethernet Ports

-NAT

-Radio VOIP GSM Pubilc announce

IP-Gateway

Model: OFS-VPA1

T(Radio over IP) technology is to convert the audio and PTT signals in a radio terminal into IP packets and then the date via the IP networks. A typical set up is shown as follow:

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. The success deployment of this technology extends the coverage of a radio network without using expensive repeaters or links up multiple radio networks in the world. In addition, this technology can also link up the radio world to the VoIP world and the cellular world easily. It truly makes voice communications across multiple networks possible.

Benefits of RoIP

Radio Service Operators who would like to expands their geographical coverage.
Radio User who would like to make and receive calls from the telephone networks.
System administrators who would like to monitor and maintain good control over the existing radio networks.
System Integrator who would like to build or deploy a reliable voice communication network in timely manner.
1-year warranty on hardware

Key Features

RoIP Series Cross-Network Gateway has 1 (RoIP-102) or 3 (RoIP-302/RoIP-302M) PTT interfaces.
Support open standard SIP Protocols (IETF SIP V2)
Support SIP proxy mode
Multiple RoIPs grouping mode
Two 10/100 Ethernet ports for the LAN and an additional device
Guad band GSM module: support GSM 850MHz, 900 MHz, 1800 MHz, 1900MHz
Speech quality ensured by QoS at LAN, IP layers and comprehensive jitter buffer
VLAN and QoS support
NAT Transversal
Voice prompts, HTTP Web
Highly stable embedded Linux operating system in high performance ARM 9 Processor