Yealink Model #s EHS 40 is compatible with: SIP VP59, T58A, T57W, T53W, T54W, T53, T48S, T46S, T42S, T41S
PLEASE NOTE: If an expansion module has been connected to the SIP- T58A, T57W, T54W, T53W, or T43 IP phone, you can connect the EHS40 to the expansion module
What is in the box: Yealink adapter box that has a USB cord coming out of it, 1 Sennhieser Y-cord, 1 Plantronics Y-cord, and 1 Jabra Y-cord.
Jabra: Grab the adapter box, and the Jabra y-cord (this y cord has the same exact ends on each side. 2 RJ45 and 2 RJ9 connections - one on each end)
1) Connect one end of the y-cord into the AUX port (RJ45 connection) and the PHONE port (RJ9) connection into the back of the headset base
2) Connect other end of the y-cord into the 2 available slots in the Yealink adapter box
3) Plug the USB cord coming out of the adapter box into the USB port in the phone
4) Compat unknown
Does not immediately give ring detection. To get it to work correctly, they will need to get to the web portal and do the following:
Please go to phone web portal > Features > Audio > Ringer Device for Headset, then choose Use Headset & Speaker. The below picture for your reference.