Aastra 5370 - Expansion Key Module Connection

Installation and first-time operation
Aastra 5370/Aastra 5370ip 123
eud-1281/1.3 – R3.0 – 04.2013
Aastra M530/Aastra M535 expansion key module
(optional)
You can connect 1 Aastra M530 expansion key module with 20 configurable keys
or 1 Aastra M535 expansion key module with 3x15 configurable keys to your
phone. Each key has an LED for visual signalling.
Connections
Connecting the Aastra M530/Aastra M535 expansion key module
Connecting further Aastra M530/Aastra M535 expansion key modules (symbol
on Aastra M530)
Connecting further Aastra M530/Aastra M535 expansion key modules or
power supply (symbol on Aastra M535)
or
OUT IN OUT IN OUT IN