AASTRA 6757i CT RP - Manual (Page 40)

34 Model 6757i CT RP Phone Installation Guide
Model M670i and M675i Expansion Modules
Additional modules (up to 3 total modules) can be piggy-backed to an
existing module providing an additional 108 softkeys with M670is and an
additional 180 softkeys with M675is. You connect the additional modules to
the right side of an existing module. The following figure illustrates the
addition of multiple M670i modules on the 6757i CT RP phone.
Installing the M670i or M675i
On the M670i, there are 18 softkeys in each column (totaling 36 keys) on the
keypad. On the M675i, there are 10 softkeys in each column (totaling 20
keys) on the keypad. The M675i also provides 3 keys at the bottom left of
the unit that allow you to configure 20 keys for each button (totaling 60
softkeys).
The module connects to the right side of the 6757i CT RP phone via an RJ-
45 connector.
M670i M675i