Cisco 7821 SIP VoIP Phone - CP-7821-3PCC-K9

Compatible Platforms (as of July 2017):

Asterisk: 1.8+

Broadsoft: 19sp1, 20sp1, 21sp1

Centile: Istra SP 9.2

Connectivity Type: IP/VoIP

Communications Protocol: SIP

Lines: 2

Ethernet Ports: 2x 10/100

PoE: 802.3af Class 1

Additional Ports: 1x RJ9 headset

Display: 3.5" 396x162 backlit greyscale

Speakerphone: full-duplex

Audio Codecs: G.711μ/a, G.722, G.722.2, G.729a/b/ab, iLBC, iSAC, Opus

QoS: CDP

Wall Mountable: yes, with optional wall mount kit