Training options for Leitner Corded

Option 1: 2 Leitner Corded+ Leitner QD (USB or Easy connect) + Leitner Y-Cord (Cat #2431 on website)
Option 2: 2 Corded headsets (any brand) + QD Easy connect + Wireless Y-Adapter (Cat #1070 on website)
*Please note that other Leitner Avaya QD may not work with this set-up.
Option 3: 2 Leitner Corded + Leitner QD or Jabra QD + Jabra Training Y-Cord (discontinued)