Aastra and Zultys EHS Setup

Note: For compat info on this hookswitch for the Leitner headset for Aastra phones, check out this article!

Aastra and Zultys EHS Set up

Sennheiser set up:

1. Plug the connector cord with green sticker into the headset base. Plug the other end into the couple box. (PLEASE NOTE: this is not the regular connector cord that comes with the cube. It has a round shape and the cord is longer)
2. Grab the Y-cord and plug the single end with a blue sticker into the coupler box
3. Plug 1 end of the top of the y-cord into the HEADSET jack of the phone
4. Plug the other end of the top of the y-cord into the EHS or EXT port in the back of the phone
5. Move Dipswitch #1 Down and set to A for Sennheiser

Plantronics CS500/Savi set up: [DISCONTINUED]

- You will be using the Plantronics EHS for Aastra and Zultys phones [DISCONTINUED]

1. Plug one EHS of the EHS into the back of the headset base
2. Other end will go into the HEADSET jack of the phone (or EXT port)
3. Set compat to A

Checking phone settings

1. Go to Menu or Options Button (may have small picture of a wrench/ tool), an admin password may be needed. Try 22222 if they have never set one. If this doesn’t work, call the phone service provider
2. Once in the Options section, go to Preferences

• Then, Set Audio
• Then scroll down to DHSG and set to ON or ENABLE.
• Also, inside the Set Audio we want > check “audio mode” > set to “headset/speaker” or “headset”.
• Click DONE

THE FOLLOWING MODELS USE THE Sennheiser Electronic Hookswitch cable for Aastra Phones # 2173.

Aastra: 6753i, 6755i, 6757i, 53i, 55i, 57i,

Zultys: Zip Series 53i, 55i/55G, 57i,57G,

The following models use the Sennheiser Electronic Hookswitch for Siemens/Unify Phones only. #1786

Aastra: 5370, 5380, 5370, 5380, 6739i, 6771, 6773, 6775, 6773 IP, 6775 IP, 6867i

Office 70, Office 80

Zultys: Zip 59i

For Plantronics [DISCONTINUED]:

Works with the following models

Aastra: 6753i, 6755i, 6757i, 53i, 55i, 57i,

Zultys: Zip Series 37G 53i, 55i/55G, 57i,57G,

Old CS: use Plantronics CS50 Electronic Hookswitch for Siemens Phones, catalog #1604 + Sennheiser Electronic Hookswitch cable for Aastra Phones, catalog #2173

CS500 Series/Savi: use Plantronics Electronic Hookswitch for Aastra & Siemens Phones, catalog #2140 [DISCONTINUED]+ AAS/AASTRA DHSG, catalog #2173

The following models use the Plantronics CS50 Electronic Hookswitch for Siemens Phones OR APS-11 only.

Aastra: 5370, 5380, 5370, 5380, 6739i, 6771, 6773, 6775, 6773 IP, 6775 IP, 6867i

Office 70, Office 80

Zultys: Zip 59i