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Yealink SIP-T48U User Manual

Yealink SIP-T48U
44 pages
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Ultra-elegant Gigabit IP Phone
SIP-T48U
www.yealink.com
Quick Start Guide (V86.36)
English | Deutsch | Español | Français

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Yealink SIP-T48U Specifications

General IconGeneral
Handset typeWired handset
Product typeIP Phone
Product colorGray
USB 2.0 ports quantityUSB 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 supportYes
Ethernet LAN (RJ-45) ports2
Display diagonal7 \
Display resolution800 x 480 pixels
Lines quantity- lines
Phonebook capacity1000 entries
Number of VoIP accounts16
Voice codecsAGC, AJB, AMR-WB, CNG, G.711, G.722, G.723.1, G.726, G.729ab, VAD, iLBC
Security algorithmsAES, HTTPS, SRTP, TLS
Ethernet LAN data rates10, 100, 1000 Mbit/s
Ethernet LAN interface typeGigabit Ethernet
Front camera-
AC adapter input voltage100 - 240 V
Operating temperature (T-T)0 - 40 °C
Operating relative humidity (H-H)10 - 95 %
Keypad number of keys29
Number of handles included1 pc(s)
Harmonized System (HS) code85171800
Weight and Dimensions IconWeight and Dimensions
Width226 mm
Height185 mm

Summary

Packaging Contents

Assembling the Phone

Desk Mount Method

Step-by-step guide to attaching the stand for desk use.

Connecting Handset and Headset

Procedure for connecting the handset and optional headset.

Connecting USB Flash Drive

Guidance on connecting USB flash drives to phone ports.

Network and Power Connections

Details options for connecting network and power (AC/PoE).

Phone Startup Process

Configuring Your Phone

Web Interface Configuration

Guide to setting up the phone using its web interface, including network and account settings.

Phone User Interface Configuration

Guide to setting up the phone using its on-device interface for network and account settings.

Using Your Phone

Touch Screen Navigation and Data Entry

Interacting with the touch screen and methods for entering/updating data.

Basic Call Features

Covers placing, answering, and ending calls using handset, speakerphone, or headset.

Advanced Call Functions

Redial and Mute

Features for redialing numbers and muting the microphone during calls.

Call Hold and Resume

Methods for placing calls on hold and resuming them.

Call Transfer Methods

Instructions for performing blind, semi-attended, and attended call transfers.

Call Forwarding

How to enable and configure call forwarding types (Always, Busy, No Answer).

Customizing Your Phone

Call Conference

Procedure for setting up and managing conference calls.

Voice Message Indicator

Understanding the indicator for new voice messages.

Call History

Accessing and managing call history entries.

Contact Directory Management

Adding, editing, and deleting contacts in the phone's directory.

Volume Adjustment

How to adjust receiver, ringer, and media volumes.

Regulatory Notices

Operating Environment

Specifies operating temperature and humidity ranges.

Warranty Information

Details on product warranty limitations and liability.

RoHS Compliance

Statement regarding compliance with the EU RoHS Directive.

Safety Instructions

Essential safety precautions for installation and use.

Environmental Requirements

Guidelines for placing and maintaining the device in its environment.

Operating Requirements

Mandatory requirements for safe operation and accessory usage.

Safety Precautions and Troubleshooting

Cable Handling and Electrical Safety

Precautions for cable use, thunderstorms, and device disconnection.

Cleaning Requirements

Instructions for safely cleaning the device using appropriate materials.

Environmental Recycling

Guidelines for environmentally friendly disposal of the device.

Troubleshooting Common Issues

Solutions for problems like no power, bad connections, or incorrect setup.

Declaration of Conformity

Product Identification

Details the product type and model number.

EC Directives and Standards

Lists relevant EC directives and compliance standards (Safety, EMC, RoHS, WEEE, REACH).

Technical Support

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