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1-4 41-001160-00, Release 2.1, Rev 04
IP Phone Administrator Guide
Overview
The 536M module adds 36 additional softkeys to the IP phone models 53i, 55i,
57i, and 57i CT. The 536M provides paper labels for each softkey. Up to 3
modules can be piggy-backed to provide up to 108 additional softkeys for the
phone.
The 560M module adds 60 additional softkeys to the IP phone models 55i, 57i,
and 57i CT (using the 3 function keys on the bottom right of the unit). The 560M
module provides an LCD display for display softkey labels. Up to 3 modules can
be piggy-backed to provide up to 180 additional softkeys for the phone.
Reference
For more information about installing and using the expansion modules, see your
phone-specific Installation Guide and phone-specific User Guide.
536M Expansion Module
for 53i, 55i, 57i, and 57i CT
560M Expansion Module
for 55i, 57i, and 57i CT