Aastra 6771/6773/6775 (OpenPhone 71/73/75) System Phones
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Key Extensions
With a key extension, you can extend your system telephone Aastra 6773/6773ip
(OpenPhone 73/73 IP) and Aastra 6775/6775ip (OpenPhone 75/75 IP) with additional
free programmable keys. The Main menu functions and destination call numbers can
be stored on these keys. In addition, the system administrator can programme call
keys (trunk keys, team keys, busy keys or direct-call keys) over the configuration
software of the communications system.
Up to three key extensions can be connected to system telephones: either three key
extensions of the model Aastra M671 (KeyExtension 73P) or three key extensions of
the model Aastra M676 (KeyExtension 75D). A combination of these key extensions is,
however, not possible.
The following equipment combinations are possible:
key extension … … with the features connectable to a
system telephone
Aastra M671
(KeyExtension 73P)
–36keys with LED indicator
– Labelling on label strips
– Aastra 6773
(OpenPhone 73)
– Aastra 6773ip
(OpenPhone 73 IP)
– Aastra 6775
(OpenPhone 75)
– Aastra 6775ip
(OpenPhone 75 IP)
Aastra M676
(KeyExtension 75D)
–20keys 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 assigned to
a display line
– Aastra 6775
(OpenPhone 75)
– Aastra 6775ip
(OpenPhone 75 IP)
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