Voice over Internet Protocol (VoIP), is a technology that allows you to make voice calls using a broadband Internet connection instead of a regular (or analog) phone line. Some VoIP services may only allow you to call other people using the same service, but others may allow you to call anyone who has a telephone number – including local, long distance, mobile, and international numbers. Also, while some VoIP services only work over your computer or a special VoIP phone, other services allow you to use a traditional phone connected to a VoIP adapter.
RoIP (Radio-over-IP) Gateways are designed to transport analog wireline two-way radio control circuits over IP networks. Each RoIP Gateway connects to one (Model 6301) or two (Model 6302) radio circuits, and each circuit supports analog audio, binary control (PTT & COR) as well as RS-232 serial data. The analog audio is field selectable between a balanced 4-wire connection suitable for most fixed station radios, and unbalanced transmit and receive audio suitable for direct connection to most mobile radios. In many cases a mobile radio’s programming and/or control head serial data can be transported over IP as well (contact Zetron for radio serial data compatibility). A pair of RoIP Gateways are thus able to transport one or two analog radio circuits across an IP network.
Product Features and Configuration
- Transports voice (3-wire unbalanced or 4-wire balanced), I/O (PTT & COR) and Data (RS-232) for up to two radio circuits.
- Handles Tone Remote Control (TRC) and Local/E&M radio circuits.
- Remote PTT operation controlled by VOX or COR.
- Use of TCP and Unicast UDP allows operation over standard IP networks.
- Compatible with many IP-based RTP voice recorders.
- Field-selectable voice compression includes PCM (64 kbps) and ADPCM (16-32 kbps).
- Fully configurable via web browser including all audio levels.
- Embedded operating system and no moving parts. Designed for harsh, unattended radio site environments.
- Optional 1U x 19″ rack mount for two units.
- Operates from 12 Volts DC.
- Optional direct built-in support for the Department of Homeland Security (DHS).