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Aastra 677xip (OpenPhone 7x IP) System Telephones: Extensions and Accessories Key Ex-
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The following equipment combinations are possible:
The number of key extensions connected to a system telephone (up to three) can
be set in the Configurator of the Aastra 800’s Web Console (in the menu
Telephony: Devices: VoIP Phones). In the Telephony: Devices: System Phones
menu, the keys can be programmed as call keys or assigned functions or desti-
nation call numbers. Users can change this programming as required.
The maximum distance between the connecting socket that the telephone/key
extension device combination is operating through and the Aastra 800 must be
less than 1000 metres. You will need a plug-in power supply unit no. 4516000 (in
Britain operate only the AC adapter with the part no. 4516001) to provide power.
The power supply unit is plugged into the last in the series of key extensions.
Key extension … … with the features connectable to a
system telephone
Aastra M671 – 36 keys with LED indicator
– Labelling on label strips
–Aastra6773ip
(OpenPhone 73 IP)
–Aastra6775ip
(OpenPhone 75 IP)
Aastra M676 – 20 keys with LED indicator
– 3 keys with LED indicator to
shift levels; enables program-
ming of 60 storage locations
on each key extension
– Labelling of the keys over
the display; each key is as-
signed to a display line
–Aastra6775ip
(OpenPhone 75 IP)
Configuration Needs Power Supply Unit
IP system telephone Yes
IP system telephone with 1-3 key ex-
tensions
Yes
IP system telephone with PoE (Power
over Ethernet)
No
IP system telephone with 1-3 key ex-
tensions and PoE
No