Yealink T40G Administrator's Guide

Getting Started
1
Getting Started
This chapter describes where Yealink IP phones fit in your network and provides basic initialization
instructions of IP phones.
Topics
Requirements
Yealink IP Phones in a Network
Initialization Process Overview
Verifying Startup
Requirements
In order to perform as SIP endpoints in your network successfully, you need the following in
deployments:
 A working IP network is established.
 VoIP gateways configured for SIP.
 The latest (or compatible) firmware of IP phones is available.
 A call server is active and configured to receive and send SIP messages.
 A text editor, such as UltraEdit, to create and edit boot files, configuration files and resource files.
Yealink IP Phones in a Network
Most Yealink IP phones are connected physically through a Category 5E (CAT5E) cable to a
10/100/1000Mbps Ethernet LAN, and send and receive all data using the same packet-based technology.
Some phones support wireless network.
Since the IP phone is a data terminal, digitized audio being just another type of data from its perspective,
the phone is capable of vastly more than traditional business phones. Moreover, Yealink IP phones run
the same protocols as your office personal computer, which means that you can develop many innovative
applications without resorting to specialized technology.

Yealink T40G Specifications

General

SIP Accounts	3
Wall Mountable	Yes
Opus Codec	No
Display	2.3 inch 132x64-pixel graphical LCD
Network	Dual-port Gigabit Ethernet
PoE	Yes
Headset Support	Yes, RJ9 port
Power Adapter	Optional
Voice Codecs	G.722, G.711(A/μ), G.729AB, G.726
Local Phonebook	1000 entries