AASTRA 6735i Installation Guide EN - Manual (Page 24)

Model M670i and M675i Expansion Modules
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41-001370-00 Rev 01 – 07.2011
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 6735i IP phone.
For more information about setting the softkeys, see the Aastra Model 6735i IP Phone User Guide.
6. Insert the two screws (included with your expansion module) into the connector plate holes and secure to the IP
phone.
7. Turn over both units to sit face up on the desk with the expansion module sitting flush against the right side of the
phone.
The following example shows the M670i attached to a 6735i IP phone: