Yealink T48s User Manual

Power over Ethernet
With the included or a regular Ethernet cable, the SIP-T48S IP phone can be powered from a PoE-compliant
switch or hub.
To connect the PoE:
1. Connect the Ethernet cable between the Internet port on the phone and an available port on the in-line
power switch/hub.
If in-line power switch/hub is provided, you don’t need to connect the phone to the power adapter. Make sure
the switch/hub is PoE-compliant. The phone can also share the network with another network device such as a
PC (personal computer). It is an optional connection. Important, do not unplug or remove power to the phone
while it is updating firmware and configurations.

Yealink T48s Specifications

General

Full duplex	Yes
Lines quantity	- lines
Phonebook capacity	- entries
Number of VoIP accounts	-
Voice codecs	AGC, AJB, CNG, G.711alaw, G.711ulaw, G.722, G.723.1, G.726, G.729A, G.729B, PLC, SILK, VAD, iLBC
Compatible products	Skype for Business
Dual-Tone Multi-Frequency (DTMF) modes	In-band, Out-of band, SIP info
Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Volume control	Digital
USB 2.0 ports quantity	1
Ethernet LAN (RJ-45) ports	2
AC adapter input voltage	100 - 240 V
AC adapter output current	2 A
AC adapter output voltage	5 V
Power consumption (typical)	4.9 W
Power consumption (Power over Ethernet (PoE))	7.5 W
Front camera	No
Security algorithms	HTTPS, MD5, SRTP, TLS
Networking standards	IEEE 802.1Q, IEEE 802.1p, IEEE 802.1x, IEEE 802.3af
Ethernet LAN interface type	Gigabit Ethernet
Supported network protocols	SIP v1 (RFC2543), v2 (RFC3261), LLDP-MED VLAN, IPv4/IPv6, UDP/TCP/DNS-SRV (RFC 3263)
Cables included	LAN (RJ-45)
Number of handles included	1 pc(s)
Display diagonal	7 \
Touchscreen type	Capacitive
Display resolution	800 x 480 pixels
Graphical user interface (GUI) language	Multi
Storage temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 95 %
Master (outer) case width	660 mm
Master (outer) case length	338 mm
Master (outer) case weight	9000 g
Master (outer) case net weight	8200 g
Quantity per master (outer) case	5 pc(s)

Weight and Dimensions

Depth	226 mm
Width	266 mm
Height	185 mm
Package depth	324 mm
Package width	263 mm
Package height	128 mm