User`s guide

Installation and First-Time Operation
100
eud-0850/2.1 — I7.7 — 10.2008
Expansion key module Aastra M530⁄M535 (optional)
You can connect up to 3 Aastra M530 expansion key modules with 20 configurable keys each and up
to 3 Aastra M535 expansion key modules with 3 x 15 configurable keys to your phone. You can freely
combine Aastra M530 and Aastra M535. Each key has an LED for visual signalling.
■ Connections
Connecting the Aastra M530⁄M535 expansion key module
Connecting further Aastra M530⁄M535 expansion key modules (symbol on
Aastra M530)
Connecting further Aastra M530⁄M535 expansion key modules or power sup-
ply (symbol on Aastra M535)