TaitNet SITE7 Trunked System Firmware

• Full off-air call setup: A radio enabled for full off-air call setup functions more like a phone. The called radio rings until the user presses the PTT. Likewise, the user of the calling radio, if enabled for full off-air call setup, hears ringing until the user of the called radio answers.
• Single channel site mode: In previous versions of site software it was not possible to use the control channel to make intersite calls. These versions of software add this facility.
• Fill in site mode: A fill-in site is a site with a small number of channels, designed to fill in a "shadow" area between sites with a greater number of channels. Fill-in sites periodically ask all radios registered on the site to attempt to move to another site if possible, to prevent overloading of their few channels.
• Divert on not-home radio: If a call is made to a radio that is not contactable, rather than failing the call with a reason "not-home", this feature allows the call to be automatically diverted to a preset destination.
• Control channel power saving: On low traffic volume sites, or remote sites without mains power, control channel power saving allows the control channel to operate in a duty cycle of less than 100%, reducing power consumption.
• Home and emergency group override: If these features are enabled, any group call interrupts all calls currently in progress at a site. It does this by transmitting a GTC (go to channel) command on all active channels, directing any radios on that channel to move to the channel where the group call is taking place. Emergency group override differs from home group override in that only emergency group call requests interrupt existing calls.
• Automatic group call amalgamation: If a call request is made to a group that is already on-air, the call request will be amalgamated into the existing call.
• Control channel rotation: This feature allows the control channel to rotate among several shared channels.

• CWID: This feature adds the ability for the site to send CWID messages (morse, as per FCC requirements) periodically on the control and traffic channels. No additional hardware is required.
• Cell extender support: When cell extenders are used, responses from radios to polls from the trunking system are typically delayed by tens of milliseconds. Previous versions of software would rely on the retry behaviour of the site to receive the delayed response, and occasionally would miss the response. The site can now wait for up to 200 ms for a response from a radio.
• Improved retry strategy: In previous versions of site software, if a call attempt to a radio failed, the site would retry the call attempt immediately. In this version of software, the site waits for approximately a second before retrying the call attempt. This new retry strategy works better in marginal coverage areas than the original strategy.
• Disable control channel on intersite link failure: Normally, if the intersite link fails, a site continues to function as a stand-alone site. It continues to process local calls. In networks with a high reliance on intersite calls and with overlapping site coverage, it is better to shut a site down completely when the intersite link fails. Radios using the site will then search for and migrate to an alternative site.
• Set alarm output if intersite link fails: The site may be configured to shut the control channel down if the intersite link fails.
• Control channel statistics collection: This site now collects statistics to indicate the utilisation of each control channel.
• Fall back mode: In the event of a channel controller losing communications with site management module, the channel controller may enter one of three fall back modes: inactive, conventional repeater mode or temporary control channel mode.

To find out more about SITE7, please contact your nearest Tait office or dealer.