Objective

The Cisco IP Phone 7800 Series are based on the same hardware as Cisco enterprise phones but have different software as it supports 3rd Party Call Control (3PCC). These models support most features of SPA phones with refreshed ID and enhanced user experience.

The cost-effective Cisco IP Phone 7800 Series is ideal for small to large enterprises seeking high-quality, full-featured Voice over Internet Protocol (VoIP) communications. These IP Phones are a great fit for customers who use traditional analog or digital phones today and want to advance to a Cisco IP Phone system, whether deployed on-premises, from the cloud, or in hybrid configurations with the Cisco Spark Phone OS.

This article provides a comparative chart of common and unique features among the different models of the Cisco IP Phone 7800 Series.

Applicable Devices

- Cisco IP Phone 7800 Series

Comparison Chart

Cisco IP Phone 7800 Series

Features

CP-7811

CP-7821

CP-7841

CP-7861

Screen

384 x 106 pixel-based, anti-glare graphical

monochrome display (3.28”/ 83.3 mm)

396 x 162 pixel-based,

anti-glare graphical monochrome display with

white backlight (3.5”/ 89 mm)

396 x 162 pixel-based,

anti-glare graphical monochrome display with

white backlight (3.5”/ 89 mm)

396 x 162 pixel-based,

anti-glare graphical monochrome display with

white backlight (3.5”/ 89 mm)

Touch Screen

No

No

No

No

Ethernet Switch

10/100 Mbps

10/100 Mbps

10/100/1000 Mbps

10/100 Mbps

Programmable Line Keys

1

2

4

16

Programmable Soft Keys

4

4

4

4

Fixed Features Keys

11

11

11

11

Mobile Remote Access without a VPN client through Cisco Expressway

Yes

Yes

Yes

Yes

Handsfree

Yes

Yes

Yes

Yes

Speakerphone

Yes (Narrowband)

Yes

Yes

Yes

Signaling Protocols

SIP

SIP

SIP

SIP

802-3AF

Yes

Yes

Yes

Yes

Headset Port

No

Yes

Yes

Yes

Third Party XML Support

—

—

—

—

USB Charging

—

—

—

—

Cisco Power

—

—

—

—

DHCP

Yes

Yes

Yes

Yes

Codecs

G.711a/μ, G.722, G.729a, iLBC

G.711a, G.711u, G.729a, G.729b, G.729ab, G.722,

and Internet Low Bitrate Codec (iLBC)

G.711a, G.711u, G.729a, G.729b, G.729ab, G.722,

and Internet Low Bitrate Codec (iLBC)

G.711a, G.711u, G.729a, G.729b, G.729ab, G.722,

and Internet Low Bitrate Codec (iLBC)

802-1p/q

Yes

Yes

Yes

Yes

Supported Cisco Call Control Platforms

CUCM: 8.62, 9.1.2, 10x and later -Bus. Edition: 8.6.2HCS: 9.1.2 Spark Cloud: Requires Spark Phone OS 11.0 or later

CUCM: 8.62, 9.1.2, 10x and later -Bus. Edition: 8.6.2HCS: 9.1.2 Spark Cloud: Requires Spark Phone OS 11.0 or later

CUCM: 8.62, 9.1.2, 10x and later -Bus. Edition: 8.6.2HCS: 9.1.2 Spark Cloud: Requires Spark Phone OS 11.0 or later

CUCM: 8.62, 9.1.2, 10x and later -Bus. Edition: 8.6.2HCS: 9.1.2 Spark Cloud: Requires Spark Phone OS 11.0 or later

UC Manager Encryption Support

Yes

Yes

Yes

Yes

Message Waiting Indication

Yes

Yes

Yes

Yes

EHS Support (AUX)

Yes

Yes

Yes

Yes

Electronic Hook Switch (EHS) Support (AUX & USB)

Yes (AUX only)

Yes (AUX only)

Yes (AUX only)

Yes (AUX only)

Wideband Audio

Yes (available with purchase of wideband headset)

Yes

Yes

Yes

POE Classification

1

1

1

1

Key Expansion Module (KEM) Support

—

—

—

—

External Audio Port

—

—

—

—

Integrated Bluetooth

—

—

—

—