Yealink SIP-T4X Administration Manual page 21

Administrator's Guide for SIP-T4X IP Phones
SIP-T41P
Physical Features:
- 192 x 64 graphic LCD
- 3 VoIP accounts, BroadSoft/Avaya/Asterisk validated
HD Voice: HD Codec, HD Handset, HD Speaker
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- 35 keys including 6 line keys
- 1xRJ9 (4P4C) handset port
1xRJ9 (4P4C) headset port
-
2xRJ45 10/100Mbps Ethernet ports
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- 1XRJ12 (6P6C) EHS36 headset adapter port
- 10 LEDs: 1xpower, 6xline, 1xmute, 1xheadset, 1xspeakerphone
Power adapter: AC 100~240V input and DC 5V/1.2A output
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- Power over Ethernet (IEEE 802.3af)
In addition to physical features introduced above, SIP-T4X IP phones also support the
following key features when running the latest firmware:
Phone Features

- Call Options: emergency call, call waiting, call hold, call mute, call forward,
call transfer, call pickup, conference.
- Basic Features: DND, phone lock, auto redial, live dialpad, dial plan, hotline,
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