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Yealink SIP-T48S User Manual

Yealink SIP-T48S
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Advanced Phone Features
187
To perform a blind transfer:
1. Tap the BLF key of the monitored user which you want to transfer this call to.
Then the active call is connected to the number of the monitored user.
When the transfer mode on DSS key is set to Attended Transfer and there is already an active
call on the IP phone, you can do the following:
To perform a semi-attended transfer:
1. Tap the BLF key of the monitored user which you want to transfer this call to. The phone
will dial the number of the monitored user.
2. Tap the BLF key of the monitored user again or the Transfer soft key to complete the
transfer when receiving ringback.
To perform an attended transfer:
1. Tap the BLF key of the monitored user which you want to transfer this call to. The phone
will dial the number of the monitored user.
2. Tap the BLF key of the monitored user again or the Transfer soft key to complete the
transfer after the monitored user answers the call.
When the transfer mode on DSS key is set to New Call and there is already an active call on the
IP phone, you can do the following:
To perform a new call:
1. Tap the BLF key of the monitored user you want to call.
The phone will dial the number of the monitored user.
Picking up an Incoming Call of the Monitored User
When the monitored user receives an incoming call, the BLF key icon indicator of the monitored
user will become and flash. If you enable visual and audio alert features on the phone, the
phone will play a specific ring tone (refer to BLF Ring Type) and display the incoming call
information on the screen. You can use the BLF key to pick up an incoming call of the monitored
user. Before picking up an incoming call, ensure that the directed call pickup code has been
configured in advance.
To pick up an incoming call when the IP phone is idle:
1. Tap the BLF key.
The incoming call of the monitored user is answered on the IP phone.
Note
If the directed call pickup code is not configured, the phone will place a call to the monitored
user instead of picking up an incoming call of the monitored user when you press the BLF key.

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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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