CP-7940G Cisco Unified Telephony IP Phone
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CP-7940G Cisco Unified Telephony IP Phone VLAN Supported 1X New

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Part Number#: CP-7940G
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Short Description:
CP-7940G 2 Lines Codec G.711/G.729a 1X RJ-45 Port 802.1Q LCD Screen VLAN Supported Unified 7940G Series IP Phone | Made by Cisco | New Factory Sealed
Product Condition:
New Retail Factory Sealed
Warranty provided by ALLHDD.COM:
90 Days
Product Details for the Cisco CP-7940G Unified Telephony IP Phone

The CP-7940G Cisco Unified 7940G Series IP Phone is a high-end business telephone that is designed for use with Cisco's Unified Communications system. This Unified 7940G Series phone has a variety of features that make it an ideal choice for a busy office environment. One of the main features of the model is its large, high-resolution LCD. This display is easy to read and provides detailed information about the call, such as the caller's name and number, as well as the duration of the call. The phone also has a built-in speakerphone, making it easy to conduct conference calls. The product also has a variety of buttons and controls that make it easy to navigate through the phone's features. For example, the phone has a dedicated mute button, as well as a volume control for the speakerphone. The phone also has a built-in headset jack, which makes it easy to use a headset for hands-free calling.

Key Features of the Cisco CP-7940G Unified 7940G Series IP Phone2 Lines Support

The Cisco CP-7940G IP Phone is equipped with the capability to handle two lines simultaneously. This feature proves invaluable for users who need to manage multiple calls efficiently, enhancing productivity in busy work environments.

RJ-45 Port

The inclusion of a single RJ-45 port on the Cisco CP-7940G enables seamless connectivity to Ethernet networks. This Ethernet port facilitates Power over Ethernet-PoE capabilities, simplifying the installation process and reducing cable clutter.

Codec Support G.711/G.729a

This IP phone supports two widely used audio codecs: G.711 and G.729a. These codecs play a crucial role in ensuring high-quality voice communication over IP networks. G.711 provides uncompressed audio, delivering excellent audio fidelity, while G.729a is a compression algorithm that optimizes bandwidth usage without compromising audio quality.

802.1Q VLAN Support

The support for 802.1Q VLAN (Virtual Local Area Network) is a crucial feature for network segmentation. VLAN support allows the IP phone to operate within specific virtual networks, enhancing network security, and improving traffic management.

LCD Screen

The Cisco CP-7940G is equipped with an LCD screen that provides users with a clear and intuitive interface for call management and configuration. The display enhances user experience by providing real-time information, such as caller ID, call duration, and menu options.

Supported Protocols SIP, MGCP, SCCP

This IP phone supports multiple communication protocols, making it versatile and compatible with various unified communication platforms. The key protocols supported include Session Initiation Protocol (SIP), Media Gateway Control Protocol (MGCP), and Skinny Call Control Protocol (SCCP).

Unified 7940G Series Telephony

Part of the Unified 7940G Series, this IP phone is designed to seamlessly integrate into Cisco's unified communication ecosystem. This ensures compatibility with other Cisco Unified Communication products, creating a cohesive and efficient communication environment.


The IP phone features an LCD screen that serves as a visual interface for users. The display provides essential information such as caller ID, call status, and menu options, contributing to an enhanced user experience.

Power over Ethernet (PoE)

The RJ-45 port on the Cisco CP-7940G supports Power over Ethernet (PoE), eliminating the need for a separate power source. This simplifies installation, reduces cable clutter, and ensures uninterrupted communication even during power outages.


As part of the Unified 7940G Series, this IP phone is designed to be compatible with various Cisco Unified Communication products. This compatibility ensures that users can seamlessly integrate the CP-7940G into their existing communication infrastructure without disruptions.

Session Initiation Protocol (SIP)

SIP is a widely adopted signaling protocol used for initiating, maintaining, modifying, and terminating real-time sessions that involve video, voice, messaging, and other communications applications and services between two or more endpoints on IP networks.

The Cisco CP-7940G's SIP support makes it interoperable with various SIP-based platforms, allowing for flexibility and broad compatibility in diverse communication environments.

Media Gateway Control Protocol (MGCP)

MGCP is a protocol used in voice-over IP (VoIP) systems for controlling telecommunication gateways and their associated media processing elements. It facilitates the communication between the IP phone and the call control server, ensuring effective call setup and management.

By supporting MGCP, the Cisco CP-7940G enhances its ability to integrate into MGCP-based VoIP networks, providing users with reliable and standardized communication services.

Skinny Call Control Protocol (SCCP)

SCCP, also known as Cisco Unified Communications Manager (CUCM) protocol, is Cisco's proprietary protocol for communication between Cisco IP phones and Cisco Unified Communications Manager. It plays a pivotal role in controlling call setup, teardown, and other telephony functions.

The inclusion of SCCP support in the Cisco CP-7940G makes it an ideal choice for organizations utilizing Cisco's Unified Communications Manager, ensuring seamless integration into Cisco's broader unified communication infrastructure.

Benefits of Using Cisco CP-7940G 2 Lines IP PhoneEnhanced Productivity

The dual-line support of the Cisco CP-7940G allows users to manage multiple calls simultaneously, boosting productivity in busy work environments. This feature is particularly beneficial for professionals who need to juggle multiple tasks and communicate efficiently.

High-Quality Audio

With support for G.711 and G.729a codecs, the IP phone delivers high-quality audio, ensuring crystal-clear voice communication. This feature is essential for business conversations, conferences, and other communication scenarios where audio quality is paramount.

Network Segmentation

The support for 802.1Q VLAN enables network segmentation, enhancing security and simplifying network management. This feature is crucial in large organizations where different departments or teams require isolated network environments.

Unified Communication Ecosystem

Being part of the Unified 7940G Series, this IP phone seamlessly integrates into Cisco's unified communication ecosystem. This integration ensures a cohesive communication environment, with interoperability between different Cisco devices and applications.

High Performance for 7940G Series IP Phone

The Cisco CP-7940G Unified 7940G Series IP Phone is a reliable and high-performing device that offers a variety of features and capabilities for businesses and organizations.

One of the main strengths of the model is its ability to handle multiple lines and calls simultaneously. The phone can support up to two lines, with a dedicated LCD screen for each line, making it easy to manage and switch between different calls. The phone also has a speakerphone and headset port, allowing for hands-free communication.

The product also offers a range of advanced features, including voice mail, call waiting, call forwarding, and call transfer. The phone also has a built-in directory, making it easy to look up and dial contacts. Additionally, the phone supports Cisco's Unified Communications system, which allows for seamless integration with other Cisco devices and applications, such as instant messaging and video conferencing.

In terms of audio quality, the model delivers clear and crisp sound for both the caller and the receiver. The phone also has a wideband audio codec, which helps to improve the overall audio quality of the calls.

General Information about this Cisco CP-7940G IP Phone
  • Manufacturer: Cisco
  • Part Number or SKU# CP-7940G
  • Product Type: IP Phone
Technical Information of 7940G Series IP Phone
  • IP Phone Technology: VoIP
  • Total Number of Phone Lines: 2
  • Number of Programmable Phone Lines: 2
  • Voice Codec: G.711
  • Voice Codec: G.729a
Interfaces/Ports for IP Phone
  • Network (RJ-45): Yes
  • Number of Network (RJ-45) Ports: 1
Management and Protocols
  • Communication Protocols: SIP
  • Communication Protocols: MGCP
  • Communication Protocols: SCCP
Display & Graphics
  • Screen Type: LCD
Compliant Standards
  • VCCI Class B ITE, CISPR 22 Class B, EN 61000-3-2, EN 61000-3-3, EN55024, UL 60950, EN50082-1, CSA 22.2 No. 60950, EN55022 Class B, ICES-003 Class B

Power Description

  • Power Source: AC Adapter

In short, the Cisco CP-7940G IP Phone, with its 2 lines, G.711/G.729a codec support, RJ-45 port, 802.1Q VLAN compatibility, LCD screen, and adherence to SIP, MGCP, and SCCP protocols, emerges as a robust solution for businesses seeking advanced telephony capabilities. As part of the Unified 7940G Series Telephony, it not only provides a rich set of features but also aligns with the broader strategy of adopting IP telephony for enhanced communication in a modern business environment. With its user-friendly design and support for industry-standard protocols, the Cisco CP-7940G stands as a testament to Cisco's commitment to delivering cutting-edge solutions for the evolving needs of today's businesses.

Product Condition:
New Retail Factory Sealed
Warranty provided by ALLHDD.COM:
90 Days

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