Jotron RRC-7700 is the fourth generation radio remote controller and contains a VoIP solution which features numerous scalability, flexibility and installation options. A large RRC-7700 system requires a VoIP server. The VoIP server concentrates the VoIP streams (reducing bandwidth), and has advanced functionality such as dynamic delay compensation, voting and climax offset operation. This RRC-7700 system can operate several radios from different locations at the airport. The system is based on a robust WAN/LAN designed for high speed network traffic, and Jotron provides radios, remote control clients and servers that take full advantage of these network features. A smaller system with a few radios and controller positions can control radios directly over an IP network: RRC-7700 Radio Remote Controller stand-alone solution. Jotron has combined the RRC-7700 Radio Remote Controller system modules into several different mounting arrangements: JRRC-105, JRRC-106, JRRC-107,  JRRC-108 and the compact RRC-client JCU.