Description : this adapter will allow different users use either headsets or different telephones to listen into one conversation, great for training purposes, mute the headset or phone use with this adapter to mute the device you need ( headset and phone not included in this listing ). Easy setup, plug the RJ plug into either the telelephone headset or handset port, then plug either the headset or different telephone into the dual RJ adapters.
Compatible for telephone such as Nortel, Meridian, Norstar, Avaya, Ashtra, Mitel, AT&T, Polycom, GE and other IP Phone. Not compatible for Cisco phones.
Condition: Brand New.