With the popularity of the Internet, a Voice over Internet Protocol(VoIP) that can transmit voice, video, and other services through Internet Protocol (IP) addresses has rapidly developed.
An IP repeater is a repeater that uses a Radio Over Internet Protocol (RoIP) to transmit voice signals carried by radio signals of a conventional repeater through an IP address network.
VoIP technology is widely used by the Internet and global IP address interconnection, mainly providing voice transmission services, completing voice connections between network coverage areas around the world, comparing global call services, VoIP voice communication costs are lower, networking More convenient, but VoIP still can't complete the interconnection of radio and IP address.
The IP repeater can realize the local radio signal relay, and the voice real-time and PTT signal can be transmitted without error through the IP address. The IP repeater can use the system regardless of the city or the VHF or UHF band. The coverage is expanded to any position in the world, and it is easy to meet different geospatial spaces and different frequency bands, and the network interconnection and sharing voice realizes one-touch conversation, thereby solving the problem of the transmission distance, the transmission distance, the receiving sensitivity, and the like in the radio transmission. .
The IP repeater not only realizes the ultra-long-distance non-relay network interconnection through the IP address network, but also realizes the distributed distributed intercom signal coverage system in the towering building through the transfer station.
The principle of IP interconnection
IP interconnection mainly refers to the interconnection of voice, data and control packets between relays in different multi-base station IP interconnection modes by connecting Ethernet stations dispersed in different locations through IP-based Ethernet. Form a larger communication network.
Maximum capacity of IP interconnection system
In the IP interconnection system, any active repeater forwards voice or data to other repeaters through the IP network in one time slot (30ms). In one time slot, the system reserves 30% of the time to process other letters. Therefore, it takes 0.7ms to forward voice or data to a repeater. It is calculated that a single-layer network supports up to 30 repeaters.
Repeaters that support IP interconnection such as: