IP Phone 8861 vs. IP Phone 8851 vs. IP Phone 8841

Learn the common and unique features among the three models of the Cisco IP Phone 8800 Series: CP-8841 vs. CP-8851 vs. CP-8861

Features CP-8841 CP-8851 CP-8861
Screen 800 x 480 WVGA (5”) 800 x 480 WVGA (5”) 800 x 480 WVGA (5”)
Touch Screen No No No
Ethernet Switch 10/100/1000 Mbps 10/100/1000 Mbps 10/100/1000 Mbps
Programmable Line Keys 5 5 5
Programmable Soft Keys 4 4 4
Fixed Features Keys 12 12 12
Mobile Remote Access without a VPN client through Cisco Expressway Yes Yes Yes
Handsfree Yes Yes Yes
Speakerphone Yes Yes Yes
Signaling Protocols SIP SIP, Bluetooth SIP, Bluetooth
802-3AF Yes Yes Yes
Wi-Fi 802.11a/b/g/n/ac
Cisco Intelligent
Proximity for Mobile Voice
Yes Yes Yes
USB Charging 1 Port 2 Ports
Cisco Power No No No
DHCP Yes Yes Yes
Codecs G.711a, G.711u, G.729a, G.729b, G.729ab, iSAC
and Internet Low Bitrate Codec (iLBC)
G.711a, G.711u, G.729a, G.729b, G.729ab, iSAC
and Internet Low Bitrate Codec (iLBC)
 G.711a, G.711u, G.729a, G.729b, G.729ab, iSAC
and Internet Low Bitrate Codec (iLBC)
802-1p/q Yes Yes Yes
Supported Cisco Call Control Platforms CUCM: 8.5.1 (non-secured mode), 8.6.2, 9.1.2, 10.0 and later Bus. Edition: 8.6.2, 9.1.2, 10.0 and later HCS: 8.6.2 and later Spark Cloud: Requires Spark Phone OS 11.0 or later Third Party Call Control: IP Phone Firmware cp-88xx- 10-3-1-1-3PCC and later CUCM: 8.5.1 (non-secured mode), 8.6.2, 9.1.2, 10.0 and later Bus. Edition: 8.6.2, 9.1.2, 10.0 and later HCS: 8.6.2 and later Spark Cloud: Requires Spark Phone OS 11.0 or later Third Party Call Control: IP Phone Firmware cp-88xx- 10-3-1-1-3PCC and later CUCM: 8.5.1 (non-secured mode), 8.6.2, 9.1.2, 10.0 and later Bus. Edition: 8.6.2, 9.1.2, 10.0 and later HCS: 8.6.2 and later Spark Cloud: Requires Spark Phone OS 11.0 or later Third Party Call Control: IP Phone Firmware cp-88xx- 10-3-1-1-3PCC and later
UC Manager Encryption Support Yes Yes Yes
Headset Port (RJ9) Yes Yes Yes
EHH Support (AUX)
Electronic Hook Switch (EHS) Support (AUX & USB) Yes (AUX only) Yes Yes
Wideband Audio Yes Yes Yes
POE Classification Class 2 3 4
Key Expansion Module (KEM) Support Up to 2 Up to 3
External Audio Port Yes
Integrated Bluetooth Yes Yes
Compare Cisco IP Phone 8800 Models: Specifications at a Glance
8811 8831 8841 8845 8851 8861 8865
High-def Video (720p) No No No Yes No No Yes
Integral switch Gigabit No Gigabit Gigabit Gigabit Gigabit Gigabit
Programmable (line) keys 5 1 5 5 5 5 5
Bluetooth/DECT No DECT (mics) No Bluetooth Bluetooth Bluetooth Bluetooth
Cisco Intelligent Proximity No No No Yes Yes Yes Yes
USB (physical ports) No No No No Yes (1) Yes (2) Yes (2)
KEM No No No No Yes (2) Yes (3) Yes (3)
Wi-Fi (802.11n) No No No No No Yes Yes
Wall-mountable Yes No Yes Yes Yes Yes Yes

Reference from https://supportforums.cisco.com/document/13123921/comparison-chart-cisco-ip-phone-8800-series

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