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Yealink SIP-T48S Quick Start

Yealink SIP-T48S
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Yealink SIP-T48S with SwyxWare
QUICKSTART
3. Enter the number to which you wish to forward the call to and confirm with "OK" or
"Send". After a few seconds the call will also be initiated without confirmation.
4. When the call is answered, tap on "Transfer".
The active call is connected with the previous call. The home screen is displayed
again on your telephone.
Forwarding calls on hold
1. You are already making a call to a subscriber.
2. Press on "Hold".
The call is put on hold and the caller hears music on hold.
3. Tap on "New Call" to call a second conversation partner.
4. Enter the number of the second caller and confirm with the "OK" or "Send" button. After
a few seconds the call will also be initiated without confirmation.
5. When the call is answered, select "Transfer".
6. Select the caller to whom you want to forward the now active call.
The active call is connected to the previously held call. The home screen is displayed
again on your telephone.
Transfering active calls (without consultation)
1. You are already making a call to a subscriber.
2. Tap on "Transfer".
The call is put on hold and the caller hears music on hold.
3. Enter the phone number to which you want to transfer the call to and tap on "B transfer".
As soon as the call is accepted, you have transferred the call. The home screen is
displayed again on your telephone.
The Yealink desk phone supports conferences with up to three participants.
1. Call a subscriber.
2. Select "Hold".
The call is put on hold and the caller hears music on hold.
3. Select "New Call".
4. Enter the telephone number of the third participant and confirm with the "OK" or "Send"
button. After a few seconds the call will also be initiated without confirmation.
5. When the call is answered, select "Conference".
6. In the list on the left, tap the participant on hold.
You are now connected to both conversation partners in a conference.
If you wait longer than 3 seconds after entering the telephone number in the following
operating step, a second call to the subscriber will be initiated. A forwarding is then only
possible using the method Forwarding active calls, page 2.
9 Starting conferences
You can set your presence status with the phone.
1. Tap on "DND" (Do Not Disturb) .
Your presence status is set to "DND" and the telephone displays "DND" in the upper
information bar.
2. To change your presence status back to "Available", tap on "DND" again.
This Yealink desk phone supports the assignment of up to nine phone numbers. When
assigning the phone numbers, group phone numbers or alternative phone numbers
count in as well. If you exceed the limit for number assignment during assignment, the
numbers are treated with the following prioritization: 1. Own numbers, 2. Group num-
bers, 3. Alternate numbers. All phone numbers that exceed the limit cannot be used on
this device.
10 Determining status information
The status LED of a user on a speed dial key displayed on the phone does not show the
Swyx status but the call status.
11 Limitation of number assignment
03/2020 — Subject to technical changes. All of the product and brand
names mentioned here are registered trademarks of the respective manu-
facturers. Complete user documentation can be found at
swyx.com/products/support/documentation.html

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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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