Yealink SIP-T48U Configuration Guide

Log in to the phone's web administration interface with your username and password. Please
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note that the factory default login details are as follows: username is admin and password is
admin.
DHCP Server
Fully configured and operational DHCP server.
PBXware Version
PBXware version 5.3.6
In order to find out the PBXware version:
Log in to PBXware
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Navigate to Settings: About.
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On the top of About page, you may see a code similar to this one PBXware Edition: Business,
Release: 5.3.6 (387597b7), Running: 1.8.32.1-gc-b47edc45, PBXware Proxy v5.3.6
(62b7bcd), API: 5.3, libmemcached version: 1.0.14, where Release denotes the current
version of your PBXware.
Installation
This section describes how to install and connect the phone to the electrical power and data
network as well as how to apply factory settings.
The following topics are covered:
Power Adapter
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Power over Ethernet (PoE)
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Factory Settings
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Power Adapter
Connect the Network and Power
Connect the DC plug on the power adapter to the DC port on the phone and connect the other
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end of the power adapter into an electrical power outlet.
Connect the Ethernet cable between the Internet port on the phone and the network port on a
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router or switch to access LAN.
NOTE: If you are using Power over Ethernet (PoE), you don't need to connect the AC adapter.
Make sure that the Ethernet cable and router or switch is Power over Ethernet (PoE) compliant.
Power over Ethernet (PoE)
Connect the Network (only)
Using a regular Ethernet cable, your phone can be powered from a Power over Ethernet (PoE)
compliant router or switch.

Yealink SIP-T48U Specifications

General

Handset type	Wired handset
Product type	IP Phone
Product color	Gray
USB 2.0 ports quantity	USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
Expansion module support	Yes
Ethernet LAN (RJ-45) ports	2
Display diagonal	7 \
Display resolution	800 x 480 pixels
Lines quantity	- lines
Phonebook capacity	1000 entries
Number of VoIP accounts	16
Voice codecs	AGC, AJB, AMR-WB, CNG, G.711, G.722, G.723.1, G.726, G.729ab, VAD, iLBC
Security algorithms	AES, HTTPS, SRTP, TLS
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Ethernet LAN interface type	Gigabit Ethernet
Front camera	-
AC adapter input voltage	100 - 240 V
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	10 - 95 %
Keypad number of keys	29
Number of handles included	1 pc(s)
Harmonized System (HS) code	85171800

Weight and Dimensions

Width	226 mm
Height	185 mm