IP Phone Cisco 3905 Chocolate

The Cisco Unified SIP Phone 3905 (IP Phone Cisco 3905 Chocolate) is an entry-level, single-line IP phone designed for basic voice communications in workplaces such as cubicles, retail outlets, classrooms, manufacturing floors, hallways, and wall-mounted locations. It features a two-line monochrome display (128 x 32 pixels), a wired handset, fixed keys for redial, transfer and hold/resume, full-duplex speakerphone, and a dual-port 10/100 Ethernet switch for separate network and PC connections. The phone supports two calls per line and uses reground and recyclable plastics for a more eco-conscious build.

Advantages

The Cisco 3905 delivers reliable basic telephony with a compact, budget-friendly design and standard Cisco Unified Communications features. Its dual Ethernet ports help reduce desktop cabling and infrastructure costs, while fixed-call-function keys and a full-duplex speakerphone simplify everyday use. The monochrome two-line display and on-device volume control provide straightforward operation for routine voice tasks.

Suitable for

• Open-plan offices and cubicles
• Retail checkouts and point-of-sale areas
• Classrooms and training rooms
• Manufacturing floors and production areas
• Hallways and wall-mounted installations

Key specifications

• Lines: single-line (supports two calls per line)
• Display: 128 x 32 pixels monochrome, 2 lines
• Memory: 32 MB internal RAM, 4 MB flash
• Network: dual-port 10/100 Ethernet switch (network + PC)
• Audio: wired handset and full-duplex speakerphone
• Controls: fixed keys for redial, transfer, hold/resume; digital volume control
• Color/finish: Chocolate
• Model/MPN: CP-3905=

How to use

Connect the phone to your network and, if needed, to a PC using the dual 10/100 Ethernet ports. Power the device according to your deployment (PoE if supported by your network or an approved power adapter where applicable). Use the handset or speakerphone to make and receive calls, use the fixed keys to redial, transfer, or hold calls, and adjust the volume with the digital control. The two-line display shows call status and basic information for straightforward operation.

Usage recommendations

For installations that require multiple desktop devices, use the phone's dual Ethernet ports to reduce additional cabling. Place the Cisco 3905 in locations requiring simple, reliable voice-only communications rather than feature-rich endpoints; choose PoE-enabled network switches where possible to simplify power management.