Yealink SIP-T48S User Manual

User Guide for the SIP-T48S IP Phone
246

Please do not place heavy objects on the device in case of damageand deformation
caused by the heavy load.

Keep at least 10 cm between the device and the closest object for heat dissipation.

Do not place the device on or near any inflammable or fire-vulnerable object, such
as rubber-made materials.

Keep the device away from any heat source or bare fire, such as a candle or an
electric heater.

Keep the device away from any household appliance with a strong magnetic field or
electromagnetic field, such as a microwave oven or a refrigerator.
Operating Requirements

Do not let a child operate the device without guidance.

Do not let a child play with the device or any accessory in case of accidental
swallowing.

Please only use the accessories provided or authorized by the manufacturer.

The power supply of the device must meet the requirements of the input voltage of
the device. Please use the provided surge protection power socket only.

Before plugging or unplugging any cable, make sure that your hands are
completely dry.

Do not spill liquid of any kind on the product or use the equipment near water, for
example, near a bathtub, washbowl, kitchen sink, wet basement or near a swimming
pool.

Do not tread on, pull, or over-bend any cable in case of malfunction of the device.

During a thunderstorm, stop using the device and disconnect it from the power
supply. Unplug the power plug and the Asymmetric Digital Subscriber Line (ADSL)
twisted pair (the radio frequency cable) to avoid lightning strike.

If the device is left unused for a rather long time, disconnect it from the power
supply and unplug the power plug.

When there is smoke emitted from the device, or some abnormal noise or smell,
disconnect the device from the power supply, and unplug the power plug
immediately. Contact the specified maintenance center for repair.

Do not insert any object into equipment slots that is not part of the product or
auxiliary product.

Before connecting a cable, connect the grounding cable of the device first. Do not
disconnect the grounding cable until you have disconnected all other cables.
Cleaning Requirements

Before cleaning the device, stop using it and disconnect it from the power supply.

Use a piece of soft, dry and anti-static cloth to clean the device.

Keep the power plug clean and dry. Using a dirty or wet power plug may lead to
electric shock or other perils.

Yealink SIP-T48S Specifications

General

Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Keypad illumination	Yes
Display diagonal	7 \
Display resolution	800 x 480 pixels
AC adapter input voltage	100 - 240 V
AC adapter output current	2 A
AC adapter output voltage	5 V
USB 2.0 ports quantity	1
Ethernet LAN (RJ-45) ports	2
Front camera	No
Voice codecs	CNG, G.711Mu, G.711a, G.722, G.723.1, G.726, G.729ab, VAD, iLBC
Lines quantity	16 lines
Phonebook capacity	1000 entries
Number of VoIP accounts	16
Dual-Tone Multi-Frequency (DTMF) modes	In-band, Out-of band, SIP info
Keypad number of keys	42
Security algorithms	AES
Networking standards	IEEE 802.3af
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Ethernet LAN interface type	Gigabit Ethernet
Supported network protocols	SIP v1, SIP v2, LLDP/CDP/DHCP, OpenVPN, IEEE802.1X, IPv6, HTTPS
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 95 %
Cables included	LAN (RJ-45)
Number of handles included	1 pc(s)
Harmonized System (HS) code	85171800

Weight and Dimensions

Depth	225 mm
Width	266 mm
Height	185 mm
Package depth	263 mm
Package width	324 mm
Package height	128 mm