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Yealink SIP-T48S User Manual

Yealink SIP-T48S
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User Guide for the SIP-T48S IP Phone
188
BLF List
You can use the BLF List feature to monitor a list of users defined by your system administrator.
For example, your system administrator enables BLF List, and creates a BLF List URI (e.g.,
BLFList@example.com) including a list of user1, user2 on the server. The BLF List keys on the IP
phone can present the status of user1 and user2. The key icons illuminate flashing or solid
depending on the status of those users. For more BLF List key icon indicators, refer to LED
Instructions on page 10.
You can use the BLF List keys in the following ways:
When the monitored user is idle, tap the BLF list key to dial out the phone number.
When there is already an active call on the IP phone, you can transfer the active call to the
monitored user by taping the BLF List key. The phone handles the active call differently
depending on the transfer mode on DSS key. For more information on the transfer mode
on DSS key, refer to refer to Configuring Transfer Mode on DSS Key on page 185.
When the monitored user receives an incoming call, tap the BLF list key to pick up the call
directly. Before picking up an incoming call, ensure that the BLF List Pickup Code has been
configured in advance. If the code is not configured, the phone will place a call to the
monitored user instead of picking up the incoming call of the monitored user when you
tap the BLF List key.
When there is a conversation on the monitored user, tap the BLF list key to barge in and
set up a conference call. Before barging in an active call, ensure that the BLF List Barge In
Code has been configured in advance. If the code is not configured, the phone will place a
call to the monitored user instead of barging in an active call of the monitored user when
you tap the BLF List key.
When a call is being parked against the monitored phone, tap the BLF List key to retrieve
the parked call from the monitored user. Before retrieving the parked call, ensure that the
BLF List Retrieve Call Parked Code has been configured in advance. If the code is not
configured, the phone will place a call to the monitored user instead of retrieving the
parked call when you tap the BLF List key.
To configure BLF List settings via web user interface:
1. Click on Account->Advanced.
2. Select the desired account from the pull-down list of Account.
3. Enter the BLF List URI in the BLF List URI field.
4. (Optional.) Enter the directed call pickup code in the BLF List Pickup Code field.
5. (Optional.) Enter the barge-in code in the BLF List Barge In Code field.

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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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