AASTRA 51i Installation Guide

Model 51i IP Phone Installation Guide

7

Installation and Setup

The 51i can be setup to share a network connection with another network 
device. Power can be provided by the supplied power adapter or by an 
802.3af compliant network power source or with a PoE inline power 
injector (optional accessory). If your System Administrator has already 
setup your phone, please refer to the 51i User Guide for call handling 
information or contact your System Administrator. 

Direct or Shared Network Connection

The phone can be set up as a direct network connection to the Ethernet 
wall jack or as a shared network connection as a pass-through if connecting 
the phone to a computer or another network device. 

Direct Network Connection

Located at the top of the phone are two fully switched 10/100 Mbps 
Ethernet cable ports. The port marked with 

 is used to connect the 

phone to the network, as well as provide power to your phone (if required). 
See 

 for more 

information. 

Ethernet
  Cable

Other Network Devices

Separate 
 Network
    Jack

 

Network Jack

(if Inline power provided,
do not install the power adapter)

To Network

Power Adapter

(optional)

Power Adapter
Connection