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Aastra 677xip (OpenPhone 7x IP) System Telephones: Extensions and Accessories Headset
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3. Plug the power supply unit’s RJ45 jack into the socket provided on the right-
hand side of the key extension.
4. Pass the power supply unit’s cable through the recesses provided on the
underside of the key extension and the system telephone.
5. Connect the power supply unit to the mains power supply.
6. Connect the system telephone with the ethernet port.
5.3 Headset
A headset can be connected to the Aastra 6773ip (OpenPhone 73 IP) and
Aastra 6775ip (OpenPhone 75 IP) IP telephones.
The headset must comply with the DHSG standard (connection via RJ45 jack). The
manufacturers Plantronics and GN Netcom make devices suitable for this purpose.
Alternatively, you can connect a “normal” headset (RJ11 jack) using an adapter.
The headset must comply with DIN Norm EN 60950-1 Point 6.2 (“Safety of infor-
mation technology equipment including electrical business equipment”).
Connecting a Headset to a System Telephone
The connector for the headset is in the bottom of the system telephone’s casing
and is indicated by this symbol .
1. Plug the RJ45 jack on the headset cable into the socket provided.
2. Pass the cable through the recesses provided on the underside of the system
telephone.
3. Activate the headset on the system telephone in the menu Phone settings:
Headset (see also the system telephone’s user guide).