AASTRA 53i Guia Da Instalação

24 Model 55i IP Phone Installation Guide

Line/Call Appearance Keys

The 55i has 4 hard line/call appearance keys each with a corresponding 
status light. Additional line/call appearances may also be set up on your 
phone as softkeys. 
These line/call appearance buttons and lights represent physical lines or 
calls for your extension. By pressing a line/call appearance button, you 
connect to the line or a call it represents. The line/call appearance light 
indicates the status of that line or call. 
When the phone is taken off-hook, the phone will automatically select a 
line for you.

For more information about the Line/Call Appearance keys, see the
Aastra Model 55i IP Phone User Guide.

Using a Headset with your Telephone

The 55i accepts headsets through the modular jack on the back of the 
phone. Contact your telephone equipment retailer or distributor to 
purchase a compatible headset. A non-amplified headset is required. 
Customers should read and observe all safety recommendations 
contained in headset operating guides when using any headset.

Note: For best headset performance, Aastra recommends non-amplified headset 

equipped with modular connector.

Making and Receiving Calls using a Headset

1. Ensure that you have selected a headset audio mode by accessing the 

Options menu. See the section 

 

for detailed information.

2. Plug the headset into jack.
3. Press the 

 key to obtain dial tone or answer an incoming call. 

Depending on the audio mode selected from the Options menu, dial 

tone or an incoming call will be received on either the headset or the 

handsfree speakerphone.

4. Press the 

N

key to end the call.

Line/Call Appearance LED Status

Description

OFF

Indicates idle line or no call 

activity

Rapid Flash

Indicates ringing on the line.

Slow Flash

Indicates a call is on hold.