Eartec TRRS Audio Cable for HUB, CMod, UltraPAK and E-Pak

This cable puts a phone or a laptop inside the intercom. One end connects to a HUB, CMod, UltraPAK, or E-Pak, the other is a 3.5 mm TRRS plug, and the result is a cell phone joining the talk group in full duplex or a computer feeding a video-conferencing app into the crew's ears and back out again.

A second use is bridging: two Eartec bases or packs connected through the cable can be linked wirelessly through the phones they are plugged into, which is how a remote position joins a local system without a repeater. Both ends are standard TRRS wiring.