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Yealink SIP-T48S User Manual

Yealink SIP-T48S
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User Guide for the SIP-T48S IP Phone
164
Attended Transfer
Before performing an attended transfer (except you use dial number method), make sure that
the transfer mode on DSS key is configured as New Call or Attended Transfer. For more
information on how to configure it, refer to Configuring Transfer Mode on DSS Key on page
185.
To perform an attended transfer:
1. Press or tap the Transfer soft key during a call.
2. Do one of the following:
- Enter the number you want to transfer the call to.
Press or to dial out.
- Tap the Directory soft key, and then tap All Contacts. Search for the contact and tap
the desired contact to dial out.
- Tap the Directory soft key, and then tap Remote Phone Book. Search for the contact
and tap the desired contact to dial out. (Directory and remote phone book should be
configured in advance. Refer to Directory on page 68 and Remote Phone Book on
page 89 for more information.)
- Tap the History soft key, and then tap the desired list. Tap the desired entry to dial
out.
3. After the party answers the call, press or tap Transfer to complete the transfer.
If you are using a handset, the transfer can be completed by hanging up the handset.
Call Waiting
You can enable or disable call waiting on the phone. If call waiting is enabled, you can receive
another call when there is already an active call on the phone. Otherwise, another incoming call
is automatically rejected by the phone with a busy message when there is an active call on the
phone. You can also enable or disable the phone to play a warning tone when receiving another
call.
To configure call waiting via phone user interface:
1. Tap ->Features->Call Waiting.
2. Tap the On radio box of the Call Waiting field.
3. Tap the On radio box of the Play Tone field.
4. (Optional.) Enter the call waiting on code or off code respectively in the On Code or Off
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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