Best Cisco Designed Voip Phones in 2026

3-Line Business Class IP phone

Connects directly to an Internet telephone service provider or to an IP PBX

Dual switched Ethernet ports, speakerphone, caller ID, call hold and conferencing

POWER OVER ETHERNET: Full-featured 8-line business-class IP phone supporting Power over Ethernet (PoE)

CONNECTIVITY: Connects directly to an Internet telephone service provider or to an IP private branch exchange (PBX)

FEATURES: Multiline support, multiple VoIP protocol support, integrated Ethernet switch, Power over Ethernet (PoE) support

This 5V high-quality replacement power adapter is compatible with the Cisco SPA504G VoIP phone.

The plug fits a US 2-pin wall power socket.

This power adaptor is designed to meet the power specification of the SPA504G VoIP phone referred to here - it is the correct voltage, amperage and tip size.

Cisco Small Business SPA 504G voip phone SIP, SIP v2, SPCP multiline silver, dark gray for Small Business Pro Unified Communications 320 with 4 FXO.

Part of the Cisco Small Business Series, the SIP-based Cisco SPA 504G 4-Line IP Phone has been tested to ensure comprehensive interoperability with equipment from voice over IP (voip) infrastructure leaders, enabling service providers to quickly roll out competitive, feature-rich services to their customers.

With hundreds of features and configurable service parameters, the Cisco SPA 504G addresses the requirements of traditional business users while building on the advantages of IP telephony. Features such as easy station moves and shared line appearances (across local and geographically dispersed locations) are just some of the many advantages of the SPA 504G.

Power Sold Separately

For Use with Cisco UCM

Not Compatible with 3PCC

CISCO REFRESH: Remanufactured is the Cisco certified, pre-owned equipment business. Refresh (-RF) carries the same warranty and access to software updates as with new products. To guarantee product direct from Cisco on Amazon; Ships From, Sold By Amazon

AUDIOPHILE SOUND: Office conference phone built with a unique acoustic architecture that accurately captures the sound of the human voice

FULL COVERAGE: Four microphones with 360-degree coverage allow users to speak in a normal voice and be heard clearly from up to 7 feet away

This Certified Refurbished product is tested and certified to look and work like new. The refurbishing process includes functionality testing, basic cleaning, inspection, and repackaging. The product ships with all relevant accessories, a minimum 90-day warranty, and may arrive in a generic box. Only select sellers who maintain a high performance bar may offer Certified Refurbished products on Amazon.com

Large pixel-based displays to allow easy access to caller information, applications, and telephone features

Comfort noise generation and voice activity detection (VAD) programming on a system basis

Cisco 7965G is Not a Standalone IP VOIP Telephone and requires a Cisco Call Manager.

This telephone is POE - Power Over Ethernet and does NOT include a power supply.

A POE Power injector is required for use.

The Cisco SPA8000 8-Port IP Telephony Gateway is a full-featured analog telephone adapter (ATA) for small businesses, providing enhanced communication services via a broadband connection to the Internet.

The Cisco SPA8000 features eight RJ-11 FXS ports to connect analog telephones to IP-based data networks and includes a single multiport RJ-21 50-pin connector, offering an alternative connection choice when deploying the telephony gateway in varied environments.

The device also has one 10/100BASE-T RJ-45 Ethernet interface to connect to either a router or a multilayer switch.

Item Package Dimension - 11.2199999885556L x 11.1799999885964W x 3.899999996022H inches

Item Package Weight - 3.3289801562 Pounds

Item Package Quantity - 1

This Certified Refurbished product is tested and certified to look and work like new. The refurbishing process includes functionality testing, basic cleaning, inspection, and repackaging. The product ships with all relevant accessories, a minimum 90-day warranty, and may arrive in a generic box. Only select sellers who maintain a high performance bar may offer Certified Refurbished products on Amazon.com

Four soft keys dynamically present calling options to the user.

Pixel-based display provides incoming, missed, and outgoing call information

This phone requires Cisco Unified Communications Manager (Sold Separately).

Does not work with non-Cisco VOIP systems.

Power NOT Included.

CISCO REFRESH: Remanufactured is the Cisco certified, pre-owned equipment business. Refresh (-RF) carries the same warranty and access to software updates as with new products. To guarantee product direct from Cisco on Amazon; Ships From, Sold By Amazon

HEADSET COMPATIBLE: Connect an audio headset through the RJ-9 port for hands-free communications

EXPANDABLE: This office phone supports one Key Expansion Module, extending the capabilities of the Cisco IP Phone 6851 with additional buttons

This Certified Refurbished product is tested and certified to look and work like new. The refurbishing process includes functionality testing, basic cleaning, inspection, and repackaging. The product ships with all relevant accessories, a minimum 90-day warranty, and may arrive in a generic box. Only select sellers who maintain a high performance bar may offer Certified Refurbished products on Amazon.com

5" Display with VGA High-quality video (640 x 480 pixel)

Full-duplex speakerphone

Cisco 7821 Ip Phone - Cable - Wall Mountable - 2 X Total Line - Voip - Caller Id - Speakerphoneuser Connect License - 2 X Network (rj-45) - Poe Ports - Monochrome