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Yealink SIP-T48S User Manual

Yealink SIP-T48S
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User Guide for the SIP-T48S IP Phone
2
Hardware component instructions of the SIP-T48S IP phone are:
Item
Description
Power Indicator LED
Indicates phone power and some feature statuses.
• Receives an incoming call—Fast flashing
• Receives a voice mail or text messageSlowly flashing
Touch Screen
The screen is touch-sensitive. Tap to select and highlight
screen items.
Shows information about calls, messages, soft keys, time, date
and other relevant data:
• Default account
• Call information—caller ID, call duration
• Icons (for example, )
• Missed call text or second incoming caller information
• Prompt text (for example, “Saving config file!”)
• Time and date
HEADSET Key
Toggles and indicates the headset mode.
MUTE Key
Toggles and indicates mute feature.
HOLD Key
Places a call on hold or resumes a held call.
TRANSFER Key
Transfers a call to another party.
Speakerphone Key
Toggles and indicates the hands-free speakerphone mode.
MESSAGE Key
Accesses voice messages.
REDIAL Key
Redials a previously dialed number.
Position the cursor within text you’re updating.
Enable or disable fields.
Turn pages or scroll through values for a field.
Scroll through items.
Access to History and Directory respectively.
Confirms actions or answers incoming calls.
Cancels actions or rejects incoming calls.
Volume Key
Adjusts the volume of the handset, headset, speaker, ringer or
media.
Keypad
Provides the digits, letters and special characters in
context-sensitive applications.
Speaker
Provides hands-free (speakerphone) audio output.
Hookswitch Tab
Secures the handset in the handset cradle when the IP phone
is mounted vertically. For more information on how to adjust
the hookswitch tab, refer to
Yealink Wall Mount Quick
Installation Guide for Yealink IP Phones
.
Hookswitch
• Picking up the handset from the handset cradle, the
hookswitch bounces and the phone connects to the line.

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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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