CP-3905-PWR-UK=: What Is This Cisco Power Adapter and How Does It Ensure Reliable VoIP Operation?

Defining the CP-3905-PWR-UK=

The ​​CP-3905-PWR-UK=​​ is a Cisco product SKU associated with ​​regional power adapters​​ for VoIP devices. While Cisco’s public datasheets don’t explicitly list this model, insights from authorized distributors like itmall.sale indicate it is a ​​UK-compliant power supply​​ designed for Cisco IP Phone 3905 series devices, ensuring compliance with local voltage standards (230V).

Technical Specifications and Features

• ​​Regional Compatibility​​: Built with a ​​Type G plug​​ (BS 1363) for UK outlets, rated for ​​100-240V AC input​​.
• ​​Device-Specific Output​​: Delivers ​​5V DC/1A power​​ to the connected IP phone, matching the Cisco 3905’s requirements.
• ​​Safety Certifications​​: Includes ​​CE marking​​ and ​​UKCA compliance​​, ensuring adherence to electrical safety regulations.

Use Cases and Compatibility

The ​​CP-3905-PWR-UK=​​ is essential for:

• ​​UK-Based Businesses​​: Deploying Cisco IP Phone 3905 units without PoE (Power over Ethernet) support.
• ​​Hybrid Work Scenarios​​: Enabling remote employees in the UK to power devices locally without third-party adapters.
• ​​Legacy Networks​​: Supporting non-PoE switches in older office setups.

Addressing Key User Concerns

​​Q: Can this adapter be used with non-UK outlets using a converter?​​
A: While technically possible, using voltage converters risks ​​overloading the device​​—Cisco recommends region-specific adapters for optimal safety.

​​Q: Does it work with other Cisco IP phone models?​​
A: No. The ​​CP-3905-PWR-UK=​​ is tailored for the 3905 series due to its unique power requirements.

​​Q: Where can I purchase genuine units?​​
A: Authorized Cisco partners like ​​itmall.sale​​ provide certified adapters, avoiding counterfeit risks.

Why This Adapter Matters

The ​​CP-3905-PWR-UK=​​ may seem trivial, but its role in maintaining seamless VoIP operations is critical. Non-compliant power supplies can degrade call quality or damage hardware, leading to unforeseen downtime. For UK businesses, investing in Cisco-certified adapters isn’t just about compliance—it’s a safeguard against productivity losses caused by unreliable third-party alternatives. In an era where communication uptime is non-negotiable, this adapter exemplifies how even peripheral components can underpin operational success.