Four-way Universal Intercom
You may make a four-way Universal Intercom connection with a couple of different configurations, 1) three Tufftalk headsets and one non-Sena Bluetooth headset or 2) two Tufftalk headsets and two non-Sena Bluetooth headsets.
You may have a couple of other Four-way Universal Intercom configurations, 1) your headset (A), a non-Sena Bluetooth headset (B), another Tufftalk (C), and a non-Sena Bluetooth headset (D), 2) your headset (A), a non-Sena Bluetooth headset (B), and two other Tufftalk headsets (C and D). You may make the four-way Universal Intercom call the same way as a normal four-way intercom call.
Two Tufftalk headsets (A and C) and two non-Sena Bluetooth headsets (B and D)
1. You (A) may start an intercom conversation with the non-Sena Bluetooth headset (B).
2. The other Tufftalk (C) may join the intercom by making an intercom call to you (A).
3. The non-Sena Bluetooth headset (D) may join the conference intercom by making an intercom call to the Tufftalk (C).
4. Now two Tufftalk headsets (A & C) and two non-Sena Bluetooth headsets (B & D) are connected with the four-way Universal Intercom.