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Yealink SIP-T48S User Manual

Yealink SIP-T48S
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User Guide for the SIP-T48S IP Phone
186
If you select New Call, tap the BLF key to place a new call to the monitored user.
3. Click Confirm to accept the change.
Using BLF Feature on the IP Phone
You can use the BLF key in the following ways:
Place a call to the monitored user.
Transfer a call to the monitored user.
Pick up an incoming call of the monitored user.
Placing a Call to the Monitored User
You can tap a BLF key to dial out the monitored phone number when the monitored line is idle.
To place a call to the monitored user when the IP phone is idle:
1. Tap the BLF key.
The IP phone dials out the phone number of the monitored user.
Transferring a Call to the Monitored User
When there is already an active call on the IP phone, you can transfer the active call to the
monitored user by tapping the BLF key. The phone handles the active call differently depending
on the transfer mode on DSS key (refer to Configuring Transfer Mode on DSS Key). The transfer
mode on DSS key has the following modes:
Blind Transfer
Attended Transfer
New Call
When the transfer mode on DSS key is set to Blind Transfer and there is already an active call
on the IP phone, you can do the following:

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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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