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YEALINK SIP-T21P – Desk Phone


    Width: 209mm, Depth: 188mm, Height: 150mm

    150Mbps DL/50Mbps UL

    Power consumption : 1.8-2.3W

Wall mountable

External universal AC adapter (optional):
AC 100~240V input and DC
5V/600mA output

Power consumption (PSU): 1.2-1.9W

Power consumption (PoE): 1.8-2.3W

Dimension(W*D*H*T): 209mm*188mm*150mm*41mm

Operating humidity: 10~95%

Operating temperature: -10~50°C

SIP v1 (RFC2543), v2 (RFC3261)

NAT transverse: STUN mode

STUN Client (NAT Traversal)

IP assignment: static/DHCP

Time and date synchronization using SNTP


SRTP for voice

Transport Layer Security (TLS)

HTTPS certificate manager

AES encryption for configuration file

Digest authentication using MD5/MD5-sess

HTTPS certificate manager