Yealink T48s Quick Reference Guide

2700 Oregon Road • Northwood, OH 43619 | 1645 West Chester Pike • West Chester, PA 19382 • 1.888.808.6111 | www.telesystem.us
Available features may vary. Provided feature set is based on the original order and
the system administrator’s requests for each deployment. Please contact your system
administrator or Telesystem directly to discuss any additions to the system.
Basic Call Handling
Make a call
Lift the handset then enter the phone number, extension, or code you wish to dial.
Tap Send to initiate the call or wait for it to go through.
Most deployments should be sure to dial 1 before an out of area phone number.
Answer a call
Lift the handset then begin speaking to the caller.
Alternately, the Answer soft key, Speaker button, or Headset button may be pressed
to answer an incoming call.
End a call
Hang up the handset or tap the End Call soft key.
Speaker
Press the speaker button to use speaker audio mode.
Headset
Press the headset button to use headset mode audio (must have a headset
connected).
Volume
Press the volume buttons to adjust volume for your ringer when idle or
audio mode while on a live call.
Mute
Press the mute button to mute your audio while on a call. Press again to
disengage.
Soft keys:
State-based
keys that line
the bottom of
the screen.
Available
options will
change based
on whether
phone is in
use or idle.
Headset
Mute
Volume
Navigational
Buttons
Dial Pad
Message Waiting
Indicator (Voicemail)
Programmable Top Keys: One line key plus up to 28 other
feature buttons may be programmed on the touchscreen.
Messages
Hold
Transfer
Redial
Speaker
Yealink T48S
Quick Reference Guide

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