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142 Model 57i CT IP Phone User Guide
Model 536 and 560 Expansion Modules
Additional modules (up to 3 total modules) can be piggy-backed to an
existing module providing an additional 108 softkeys with 536EMs and an
additional 180 softkeys with 560EMs. You connect the additional modules
to the right side of an existing module. The following figure illustrates the
addition of multiple 536EM modules on the 57i IP Phone.
You can configure the softkeys using the Aastra Web UI.
References
For more information about configuring softkeys, see Softkeys on page 24.
For more information about installing 536EM and 560EM modules on your
phone, see the Aastra 57i IP Phone Installation Guide.