EIA Tone Control - Catalyst Communication Technologies

EIA Tone Control

Tone control, also known as an EIA Tone control, is a signaling system used to operate a two-way radio by some form of remote control. Catalyst offers Tone remote control capabilities in each of its dispatch console systems to initiate the Push-to-Talk function and to change channels on the base station or control station. Most radio manufacturers offer a tone control interface for their control stations, allowing tone control to be used for a variety of trunking and conventional over-the-air protocols including SmartNet, MotoTrbo, P25, etc. The use of tone control allows greater flexibility in choosing the base station or control station but has a limited feature set when compared to the Advanced Interfaces that Catalyst provides with specific radio equipment. Contact Catalyst to discuss your specific needs and the trade-offs of using Tone Control versus an intelligent interface.

The simplest tone remote system uses a two-wire audio circuit to operate a simplex base station. If simultaneous transmit and receive is required, a four-wire or full duplex audio path to the base station is required. Catalyst supports both 2 wire and 4 wire tone remote control and MDC 1200 signaling may be optionally added.


A new White Paper to help explain why Interworking between LMR and LTE public safety users needs to be based upon standards, and the dangers of using proprietary Push to Talk over cellular services, can now be downloaded from the Catalyst website. blog.catcomtec.com/2020/10/16…