Yealink SIP-T48U User Manual

Using the speakerphone:
Press or tap the End Call soft key.
Using the headset:
Tap the End Call soft key.
Redial
 Press to enter the Placed Calls list, and then tap the desired entry.
 Press twice when the phone is idle to dial out the last dialed number.
Call Mute and Un-mute
 Press to mute the microphone during a call.
 Press again to un-mute the call.
Call Hold and Resume
To place a call on hold:
Press or tap the Hold soft key during an active call.
To resume the call, do one of the following:
 If there is only one call on hold, press or tap the Resume soft key.
 If there is more than one call on hold, tap the call you want to resume, and then press or tap the Resume soft key.
Call Transfer
You can transfer a call in the following ways:
Blind Transfer
1. Press or tap the Transfer soft key during an active call. The call is placed on hold.
2. Enter the number you want to transfer to.
3. Press or tap Transfer.
Semi-Attended Transfer
1. Press or tap the Transfer soft key during an active call. The call is placed on hold.
2. Enter the number you want to transfer to, and then press .
3. Press or tap Transfer when you hear the ring-back tone.
Attended Transfer
1. Press or tap the Transfer soft key during an active call. The call is placed on hold.
2. Enter the number you want to transfer to, and then press .
3. Press or tap Transfer when the second party answers.
Call Forward
To enable call forward:
1. When the phone is idle, tap ->Features->Call Forward.
2. Select the desired forward type:
Always Forward----Incoming calls are forwarded unconditionally.
Busy Forward----Incoming calls are forwarded when the phone is busy.
No Answer Forward----Incoming calls are forwarded if not answered after a period of time.
3. Enter the number you want to forward to. For No Answer Forward, tap the gray box of the After Ring Time field, and then tap the
desired ring time to wait before forwarding.
4. Tap the Save soft key to accept the change.
ENGLISH
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Yealink SIP-T48U Specifications

General

Handset type	Wired handset
Product type	IP Phone
Product color	Gray
USB 2.0 ports quantity	USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
Expansion module support	Yes
Ethernet LAN (RJ-45) ports	2
Display diagonal	7 \
Display resolution	800 x 480 pixels
Lines quantity	- lines
Phonebook capacity	1000 entries
Number of VoIP accounts	16
Voice codecs	AGC, AJB, AMR-WB, CNG, G.711, G.722, G.723.1, G.726, G.729ab, VAD, iLBC
Security algorithms	AES, HTTPS, SRTP, TLS
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Ethernet LAN interface type	Gigabit Ethernet
Front camera	-
AC adapter input voltage	100 - 240 V
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	10 - 95 %
Keypad number of keys	29
Number of handles included	1 pc(s)
Harmonized System (HS) code	85171800

Weight and Dimensions

Width	226 mm
Height	185 mm