Jabra GN9120 Flex User manual

Jabra GN9120 Micro Boom
How to connect my Jabra GN9120 EHS / GN9125 EHS with
Aastra Open Phone 6771, 6773, 6775, 71, 73, 75, Aastra 6739i,
Aastra 7434 and 7444, 5370, 5370ip, 5380, 5380ip
Prerequisite:
Jabra GN9120 EHS + Jabra Link 14201-10
Jabra GN9125 EHS + Jabra Link 14201-10
In combination with one of the following phones:
Open Phone 6771 / 6773 / 6775 incl. IP (Old name: Open Phone
71/73/75 incl. IP)
Aastra 6739i
Aastra 7434 / 7444 IP
5370, 5370ip, 5380, 5380ip
Connection:
1. Plug the 1-sided end of the DHSG cable marked in blue into the
socket of your phone marked with the “headset” symbol.
2. Plug the split end of the DHSG cable into the base of the Jabra
GN912x. Plug the RJ10 plug into the socket with the complete
“phone” symbol and the RJ45 plug into the socket on the Jabra
GN9120 base marked with "AUX".
22/02/2024 01:41
https://www.jabraheadsets.ch/supportpages/jabra-gn9120/9120-30-
01/faq/5e459146-cabb-468b-9141-4ea2287506a7
Seite 1 von 4

EHS setup:
The Jabra GN912x must be set up to DHSG EHS. (The Jabra GN912x
DHSG is always supplied in DHSG mode).
You can check or set it up as follows:
1. Place the headset on the base.
2. Then press the PLUS and MINUS buttons simultaneously for 6
seconds until the online display on the headset starts to flash.
3. The base will now display to you the EHS currently installed. The
online light indicates "MSH", the pulsating light indicates "RHL", the
MUTE light "DHSG" and the battery display "AEI".
4. With the PLUS or MINUS buttons, you can now switch between the
22/02/2024 01:41
https://www.jabraheadsets.ch/supportpages/jabra-gn9120/9120-30-
01/faq/5e459146-cabb-468b-9141-4ea2287506a7
Seite 2 von 4

different EHS types.
5. To confirm the EHS has successfully installed, the phone
automatically switches back to charge mode after approx. 10
seconds.
Base setup:
The adjustment controller on the base must be set to "A".
Microphone level setup:
1. Please call someone with the headset.
2. You must now simultaneously press the PLUS and MINUS buttons,
which immediately produces a signal tone. You can now increase the
microphone volume with PLUS or decrease the volume with MINUS.
22/02/2024 01:41
https://www.jabraheadsets.ch/supportpages/jabra-gn9120/9120-30-
01/faq/5e459146-cabb-468b-9141-4ea2287506a7
Seite 3 von 4

3. To confirm, after approx. 10 seconds a low signal tone is produced.
All the settings are then automatically saved.
Phone setup:
Open Phone 71: Menu > Settings > Audio > Headset ON
Open Phone 73 / 75 incl. IP: Menu > Settings > Headset > Headset ON
22/02/2024 01:41
https://www.jabraheadsets.ch/supportpages/jabra-gn9120/9120-30-
01/faq/5e459146-cabb-468b-9141-4ea2287506a7
Seite 4 von 4