What Are Expansion Modules - Aastra AastraLink Pro 160 Administrator's Manual

AastraLink Pro 160 Administrator Guide
What Are Softkeys and How Do They Work?

What are Expansion Modules?

The 5i Series Aastra IP SIP Phones offer expansion module units that can attach to
the right side of the phone to provide additional softkeys. These expansion
modules are called the 536M and the 560M.
For Phones 53i, 55i, 57i, and 57i CT
For Phones 55i, 57i and 57i CT
6-6
Model 536M
Model 560M
41-001190-01 Rel. 1.1, Rev. 00