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Yealink SIP-T48S User Manual

Yealink SIP-T48S
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User Guide for the SIP-T48S IP Phone
114
Hold
You can use this key feature to place an active call on hold or retrieve a held call.
Dependencies:
Type (Key Event)
Key Type (Hold)
Label (key label displayed on the touch screen)
Usage:
1. Tap the Hold key during an active call to place the call on hold.
2. Tap the Hold key again to retrieve the held call.
DND
You can use this key feature to enable or disable DND. You can also use this key feature to
access the custom DND screen. For more information, refer to Do Not Disturb (DND) on page
147.
Dependencies:
Type (Key Event)
Key Type (DND)
Label (key label displayed on the touch screen)
Usage:
When DND is in phone mode:
1. Tap the DND key to enable DND.
2. Tap the DND key again to disable DND.
When DND is in custom mode:
1. Tap the DND key to access the custom DND screen. You can enable or disable DND for one
or all accounts.
Group Listening
You can use this key feature to activate the Speakerphone and Handset/Headset mode at the
same time. It is suitable for group conversations which have more than one person at one side.
You are able to speak and listen through the handset/headset, while the others nearby can only
listen through the speaker.
Dependencies:
Type (Key Event)
Key Type (Group Listening)
Label (key label displayed on the touch screen)
Usage:
1. During a call, tap the Group Listening key to activate the group listening mode.
You can then speak and listen through the handset/headset, while other people at your
side can only listen through the speaker at the same time.
2. Tap the Group Listening key again to deactivate the group listening mode.

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Yealink SIP-T48S Specifications

General IconGeneral
MountingDesk/Wall
Handset typeWired handset
Product typeIP Phone
Product colorBlack
Keypad illuminationYes
Display diagonal7 \
Display resolution800 x 480 pixels
AC adapter input voltage100 - 240 V
AC adapter output current2 A
AC adapter output voltage5 V
USB 2.0 ports quantity1
Ethernet LAN (RJ-45) ports2
Front cameraNo
Voice codecsCNG, G.711Mu, G.711a, G.722, G.723.1, G.726, G.729ab, VAD, iLBC
Lines quantity16 lines
Phonebook capacity1000 entries
Number of VoIP accounts16
Dual-Tone Multi-Frequency (DTMF) modesIn-band, Out-of band, SIP info
Keypad number of keys42
Security algorithmsAES
Networking standardsIEEE 802.3af
Ethernet LAN data rates10, 100, 1000 Mbit/s
Ethernet LAN interface typeGigabit Ethernet
Supported network protocolsSIP 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 includedLAN (RJ-45)
Number of handles included1 pc(s)
Harmonized System (HS) code85171800
Weight and Dimensions IconWeight and Dimensions
Depth225 mm
Width266 mm
Height185 mm
Package depth263 mm
Package width324 mm
Package height128 mm

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