SmarTrunk Systems said its trunking systems and controllers are now compatible with logic trunked radio (LTR) systems. Consequently, system operators can create multi-site systems for less cost, because SmarTrunk’s controllers can share repeaters with other vendors’ controllers, the company said.

In other news, SmarTrunk launched the ST-310, a firmware-based multi-site roaming switch. The ST-130 supports the company’s 3G features-including automatic site registration, late-to-join or lost radio rejoin, radio caller ID with dial back, secure speech, alphanumeric group tag display and conventional channel scan-except conference calling. The switch can support 1000 users sharing 64 local and remote channels at up to 16 sites, the company said.