Cisco SPA525G2 IP Phone
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Cisco SPA525G2 Small Business Wi-Fi VoIP Phone Silver/Dark Refurbished

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Part Number#: SPA525G2
List Price was: $542.31
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Short Description:
SPA525G2 Small Business Wi-Fi Voice over Internet Protocol (VoIP) wireless IP Phone Silver/Dark Gray | Made by Cisco | Refurbished
Product Condition:
Warranty provided by ALLHDD.COM:
90 Days

Product Details of the Small Business VoIP Phone

In the ever-evolving landscape of communication technology, businesses are constantly seeking efficient and reliable solutions to meet their telephony needs. One such solution is the Cisco SPA525G2 Small Business Wi-Fi VoIP Phone, a sophisticated device designed to enhance communication within small businesses. In this detailed exploration, we will delve into the key features and specifications of this VoIP phone, shedding light on its capabilities and benefits.

Key Features

Wireless Connectivity

The SPA525G2 comes equipped with Wi-Fi capabilities, allowing users to connect seamlessly to their business network. This feature provides flexibility in phone placement and reduces the need for additional wiring. A notable feature of the Cisco SPA525G2 is its Wi-Fi capability, providing users with the flexibility to connect wirelessly to their network. This wireless functionality reduces the clutter of cables and offers increased mobility, allowing users to move around the office while staying connected.

VoIP Technology

Utilizing Voice over Internet Protocol (VoIP) technology, this Cisco phone enables voice communication over the Internet. VoIP offers cost-effective and efficient communication, making it an ideal choice for small businesses looking to streamline their communication infrastructure.

Elegant Design

The phone's silver/dark gray color scheme and sleek design make it a visually appealing addition to any office environment. Its ergonomic design ensures user comfort during extended use.



The Cisco SPA525G2 features a vibrant display that enhances user experience. The clear screen allows users to navigate through the phone's features easily and view essential information such as call details and contacts.

VoIP Protocols Supported

This Small Business Wi-Fi VoIP Phone supports various VoIP protocols, including SIP and SPCP. These protocols ensure compatibility with different VoIP systems, offering businesses flexibility in choosing their communication infrastructure.

Expandable Functionality

With support for additional features and functions through firmware upgrades, the SPA525G2 allows businesses to adapt and scale their communication capabilities as their needs evolve.


Wi-Fi Connectivity

The inclusion of Wi-Fi connectivity eliminates the need for physical network connections, providing businesses with greater flexibility in phone placement within the office environment. This feature is especially beneficial for businesses with dynamic workspaces.

Ethernet Ports

In addition to Wi-Fi, the phone includes Ethernet ports for wired connections. This dual connectivity option ensures reliability, offering businesses the flexibility to choose the connection method that best suits their needs.

User-Friendly Interface

Intuitive Navigation

The Cisco SPA525G2 features an intuitive user interface, making it easy for users to navigate through the phone's settings and features. This user-friendly design enhances the overall user experience and reduces the learning curve for new users.

Programmable Buttons

The phone comes with programmable buttons that can be customized to perform specific functions. This customization allows users to tailor the phone's features to meet their individual preferences and work requirements.

Benefits for Small Businesses

Cost-Effective Communication

By leveraging VoIP technology, the Cisco SPA525G2 helps small businesses reduce communication costs. VoIP calls typically cost less than traditional phone calls, resulting in potential cost savings for businesses, especially those with a high volume of calls.


The phone's support for firmware upgrades and additional features ensures scalability for growing businesses. As communication needs evolve, the SPA525G2 can adapt, providing a long-term solution that grows with the business.

Flexibility in Deployment

The combination of Wi-Fi and Ethernet connectivity options provides businesses with deployment flexibility. Whether a business prefers a wireless setup or a wired connection, the SPA525G2 accommodates both, catering to diverse office environments.

General Information about the Cisco SPA525G2

  • Manufacturer: Cisco
  • Model Number or SKU# SPA525G2
  • Product Series: 5000
  • Product Type: IP Phone

Technical Information for IP Phone

  • IP Phone Technology: VoIP
  • Connectivity Technology: Wireless
  • Wireless Technology: Wi-Fi
  • Wireless LAN Standard: IEEE 802.11b/g
  • Total Number of Phone Lines: 5
  • Caller ID: Yes


  • Adaptive Jitter Buffer
  • Call Park
  • Web Browser
  • Voice Activity Detection
  • Call Pick-up
  • Call Waiting

Interfaces/Ports of Wireless IP Phone

  • Headset Port: Yes
  • PoE (RJ-45) Port: Yes

Display and Graphics

  • Screen Type: LCD
  • Screen Size: 3.2 Inch
  • Screen Resolution: 320 x 240

Management and Protocols

  • Communication Protocols
  • SIP
  • SIP v2
  • Buttons & Keys Type:
  • Speaker
  • Hold Button
  • Volume Control
  • Call Transfer
  • Conference
  • DND (Do Not Disturb)
  • Call Forward
Additional Features
  • Easy to install, designed exclusively for Cisco SPA 500 Series IP Phones
  • 32 programmable buttons simplify dialing and call transfers
  • Multicolored LEDs monitor the status of each configured voice line via Busy Lamp Field (BLF)
  • Two attendant consoles can be linked for a total of 64 buttons
Voice Features
  • SIP proxy redundancy - dynamic via DNS SRV, A records
  • Re-registration with primary SIP proxy server
  • SIP support in Network Address Translation (NAT) networks, including simple traversal of User Datagram Protocol (UDP) through NAT (serial tunnel [STUN])
  • Codec name assignment
  • Voice algorithms:
  • G.711 (A-law and µ-law)
  • G.726 (32 kbps)
  • G.729 AB
  • G.722, Wideband Audio
  • Dynamic payload support
  • Adjustable audio frames per packet
  • Dual-tone multi-frequency (DTMF): in-band and out-of-band (RFC 2833), SIP INFO (RFC 2976)
  • Flexible dial plan support with inter-digit timers
  • IP address/Uniform Resource Identifier (URI) dialing support
  • Call progress tone generation
  • Jitter buffer - adaptive
  • Frame loss concealment
  • Voice activity detection (VAD) with silence suppression
  • Attenuation/gain adjustments
  • Caller ID support (name and number)
  • Password-protected system reset to factory default
  • Password-protected administrator and user access authority
  • HTTPS with factory-installed client certificate
  • HTTP digest - encrypted authentication via MD5 (RFC 1321)
  • Up to 256-bit Advanced Encryption Standard (AES) encryption
  • SIP over TLS for signaling encryption
  • AnyConnect SSL VPN
  • SRTP for media encryption

Finally, the Cisco SPA525G2 Small Business Wi-Fi VoIP Phone is a versatile communication solution for small businesses. Its wireless capabilities, VoIP technology, and user-friendly interface make it a valuable asset for organizations seeking reliable and cost-effective communication tools. With a sleek design and expandable functionality, the SPA525G2 offers businesses the flexibility to adapt to changing communication needs. Consider investing in this Cisco phone to enhance your small business communication infrastructure and stay connected seamlessly.

Product Condition:
Warranty provided by ALLHDD.COM:
90 Days

About Refurbished Products

Refurbished products are typically refurbished by an Original Manufacturer or an affiliate of the manufacturer or 3rd party facility. This product may have minor blemishes due to normal product usage and doesn't necessarily come with documentation and software unless indicated, but has been well tested and generally has never had any defects.

Here, you can check more available conditions of your desired product SPA525G2 at a competitive price. We are trying our best to meet your needs on the enterprise-level computer, server, data centre, and networking hardware. You are welcome to ask our live chat or get live representative support over the phone.


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ALLHDD guarantees that the products will not have defects in material that will affect the product's functionality during the Standard Warranty Period. The warranty period starts when the merchandise/items from our warehouse.

What does ALLHDD.Com warranty cover?

30-days to 3 years warranty:

Replacement or refund. In the case of material defects, we will try to replace the product first. The product will be replaced before the expiration of the original warranty. For any failure of hardware, if we cannot process the replacement of the product(s)/model(s), we will refund the original selling/invoiced price. The shipping costs and sales tax, if any, are non-refundable. ALLHDD retains the right to decide whether the item(s) will process for replacement or refund.

What is not covered by our warranty?

The reason why our warranty does not cover any problem caused by the following conditions:

(a) misuse of hardware; accidental damage; carelessness product(s) damage; shock; temperature beyond the specification of any product; faulty installation; operation; modification of goods;

(b) any misuse outside the instructions in the user manual for any specific product;

(c) damaged caused by other hardware or equipment. The warranty will void if the item is returned with physical damage, damage to the retail box, removed from the box, counterfeit labels/labelled by them, or any modifications of internal and external covers. Data loss or damages to any other equipment we do not cover by our offered warranty.

What is the Manufacturer/Brand Warranty?

In general, a manufacturer's warranty service/support is a written guarantee to the buyer of a product. Its terms assure the replacement or repair of the product, if necessary, within a specified period after the purchase (2-5 years depending on the brand/manufacturer). It is typically included in the price of the product. Products are brand new and sealed and the original manufacturer box is complete with the Manufacturer's genuine warranty. For most of the brand new/retail products that come with the manual and box, exceptions may apply (i.e., Cisco, Juniper Networks).

For the server parts (i.e., Dell, HPE) to get Full coverage of the warranty server must have a full 3- 5 years warranty. However, ALLHDD.COM will cover the warranty duration if any Manufacturer doesn't support the advertised warranty and there is no refund for those.
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