Attaching Multiple Expansion Modules - Aastra 6757i Installation Manual

Attaching Multiple Expansion Modules

Multiple modules (up to 3 total modules) can be piggy-backed to an IP
phone 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 M675i modules on the 6757i IP Phone.
For more information about setting the softkeys, see the Aastra Model
6757i IP Phone User Guide.
24 Model 6757i IP Phone Installation Guide