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Yealink T48s Quick Guide

Yealink T48s
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RingCentral Deskphones | Yealink T48S
© 1999 - 2023 RingCentral, Inc. All rights reserved.
2
Placing a call
Dial the number and do one of the following:
Lift the receiver.
Press to use the headset.
Press to use the speakerphone.
Answering a call
Placing a call on hold
Press or while on an active call.
Retrieving a held call
Press or to retrieve a held call.
Starting a Conference call
Transferring a call
Warm Transfer:
1. While on an active call, press or tap the
Transfer soft key.
2. Dial the number of the other party.
3. When the destination party answers, provide the
information, and confirm that they would like to
take the call.
4. Press or tap the Transfer soft key.
Blind Transfer:
1. While on an active call, press or tap the
Transfer soft key.
2. Press the Blind soft key.
3. Dial the extension of the other party.
4. Press or tap the Transfer soft key.
Voicemail Transfer:
1. Press or tap the Transfer soft key.
2. Press the Blind soft key.
3. Dial plus the extension number of the
voicemail where you want to transfer the call.
Parking a call

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Yealink T48s Specifications

General IconGeneral
Full duplexYes
Lines quantity- lines
Phonebook capacity- entries
Number of VoIP accounts-
Voice codecsAGC, AJB, CNG, G.711alaw, G.711ulaw, G.722, G.723.1, G.726, G.729A, G.729B, PLC, SILK, VAD, iLBC
Compatible productsSkype for Business
Dual-Tone Multi-Frequency (DTMF) modesIn-band, Out-of band, SIP info
MountingDesk/Wall
Handset typeWired handset
Product typeIP Phone
Product colorBlack
Volume controlDigital
USB 2.0 ports quantity1
Ethernet LAN (RJ-45) ports2
AC adapter input voltage100 - 240 V
AC adapter output current2 A
AC adapter output voltage5 V
Power consumption (typical)4.9 W
Power consumption (Power over Ethernet (PoE))7.5 W
Front cameraNo
Security algorithmsHTTPS, MD5, SRTP, TLS
Networking standardsIEEE 802.1Q, IEEE 802.1p, IEEE 802.1x, IEEE 802.3af
Ethernet LAN interface typeGigabit Ethernet
Supported network protocolsSIP v1 (RFC2543), v2 (RFC3261), LLDP-MED VLAN, IPv4/IPv6, UDP/TCP/DNS-SRV (RFC 3263)
Cables includedLAN (RJ-45)
Number of handles included1 pc(s)
Display diagonal7 \
Touchscreen typeCapacitive
Display resolution800 x 480 pixels
Graphical user interface (GUI) languageMulti
Storage temperature (T-T)-10 - 50 °C
Operating relative humidity (H-H)10 - 95 %
Master (outer) case width660 mm
Master (outer) case length338 mm
Master (outer) case weight9000 g
Master (outer) case net weight8200 g
Quantity per master (outer) case5 pc(s)
Weight and Dimensions IconWeight and Dimensions
Depth226 mm
Width266 mm
Height185 mm
Package depth324 mm
Package width263 mm
Package height128 mm

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