Yealink SIP-T28p manual

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Product specifications

Features
Expansion module supportyes
Keypad number of keys48
Device lockyes
Colour of product Black
Handset typeWired handset
Audio
Speakerphone yes
Voice codecsG.711, G.722, G.723.1, G.726
Display
Display LCD
Display resolution 320 x 160
Touchscreen -
Phone features
Lines quantity -
Call waitingyes
Distinctive ringyes
Speed dialingyes
Intercomyes
Call holdyes
Call forwardingyes
Conference callyes
Redialingyes
Call parkyes
Call pick upyes
Full duplex yes
Short Message Service (SMS)yes
Caller ID -
Phonebook capacity -
Number of VoIP accounts6
Networking
Bluetooth no
Ethernet LAN yes
Quality of Service (QoS) supportyes
DHCP clientyes
Syslogyes
Wi-Fi no
Security
Security algorithms HTTPS, SSL/TLS
Ports & interfaces
Ethernet LAN (RJ-45) ports 2
RJ-9 ports quantity2
Power
Power over Ethernet (PoE) yes
Power consumption (typical) 2.6
AC adapter input voltage100 - 240
AC adapter output voltage5
Weight & dimensions
Width 273mm
Depth 204mm
Height 42mm
Weight 1050
Operational conditions
Operating relative humidity (H-H)10 - 95
Certificates
Compliance industry standards IEEE 802.3af
Packaging content
Number of handles included 1