Yealink SIP-T21 E2

Product Overview
15
CP920
Physical Features:
- 248 x 120 graphic LCD
- One VoIP account/Yealink Cloud account and two PSTN accounts
- 23 dedicated hard keys and 4 context-sensitive soft keys
- HD Voice: HD Codec
- 1*RJ45 10/100Mbps Ethernet port
- 1*USB2.0 port
- Security lock port
- 3 LED indicators
- Power adapter (optional): AC 100~240V input and DC 12V/1A output
- Power over Ethernet (IEEE 802.3af)
Key Features of IP Phones
In addition to physical features introduced above, 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, call park, three-way conference, five-way conference (applicable