Ericsson LBI-39224 manual Relay Function, None, 161

LBI-39224

NOTE

The VOX threshold and 2175 Hz hold tone level settings are now also stored at the CEC/IMC Manager's hard disk. This is a change from previous versions, which stored the VOX threshold and 2175 Hz hold tone level settings only at the CEC/IMC.

Normally, a channel's VOX threshold level should be set just above (approximately 3 dBm) the noise floor of the respective line to and from the conventional base station. With this setting, the VOX will not trip when the station is squelched and it will immediately trip from the increase in line noise when the station unsquelches. Alternately, a channel's VOX threshold may be set much higher than the noise floor (10 dBm or more) so it will only trip on voice signals.

Relay Function

In some cases, a Conventional Concentrator Card is utilized to interconnect lines between conventional base stations and the CI

Boards within the CEC/IMC. In these cases an Audio Concentrator Card is not used. The following three (3) mutually exclusive options configure the consoles' ability to control relays located on the Conventional Concentrator Card when the currently selected conventional channel is programmed into a communication module. Select the required option by selecting the respective option button. To avoid conflicts between different console commands, it is recommended that all channels on a common Conventional Concentrator Card be configured identically. Refer to CEC/IMC Digital Audio Switch Installation, Set-up and Troubleshooting, LBI-38938, for connection and wiring details. Relay Function default = "None."

None

Select this option if no relays are present, if the relays are present but not used (not wired), or if a console must not have the ability to toggle the relays. Always select "None" if the currently selected channel connects to the CEC/IMC through an Audio Concentrator Card (no relays) or a Conventional Concentrator Card wired in standard configuration (relays not utilized).

3-161