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Yealink T21 User Manual

Yealink T21
11 pages
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Vox Centrex Yealink T20/T21 User Guide
Author Dale Ellwood
Department: Vox Telecom R&D
Date: September 2014

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Yealink T21 Specifications

General IconGeneral
Power over Ethernet (PoE)Yes (IEEE 802.3af)
Number of SIP Accounts2
Ethernet Ports2 (10/100 Mbps)
VoIP ProtocolsSIP
Voice CodecsG.711, G.729, iLBC
SpeakerphoneYes
HD VoiceYes
Power Supply5V DC
Operating Temperature0°C to 40°C
Humidity10% to 95% (non-condensing)

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