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Cisco 3905 Unified SIP Phone (CP-3905) | New

Cisco 3905 Unified SIP Phone (CP-3905) | New

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Overview

Overview of Cisco 3905 Unified SIP Phone (CP-3905) | New


Cisco's CP-3905 is a cost-effective single-line IP phone that supports up to two concurrent calls. It integrates core Cisco Unified Communications features in a simple, durable design and leverages recyclable materials, appealing to both budget and environmental considerations.


Cisco 3905 Unified SIP Phone (CP-3905) Features:

  • Single line; supports up to two calls
  • Two-line, 128 x 32 pixel monochrome graphical display
  • Full-duplex speakerphone
  • Fixed feature keys: redial, transfer, hold/resume, speakerphone, mute, volume, ringer control
  • Dual 10/100 Ethernet ports (LAN and downstream PC)
  • IEEE 802.3af Power over Ethernet Class 1 support
  • Foldable foot stand; can be wall-mounted
  • Eco-friendly with recyclable plastics
  • Call features: call transfer, hold, resume, conference, call forward, redial, auto barge, group pickup, music on hold
  • Compatible with Cisco Unified Communications Manager (CUCM) 7.1 or later
  • SIP protocol support
  • Voice codecs: G.711a, G.711u, G.729, G.729a, G.729ab
  • Comfort noise generation (CNG), voice activity detection (VAD)
  • 4MB flash memory, 32MB SDRAM

Best Uses for Cisco 3905 Unified SIP Phone (CP-3905):

  • Basic voice communications for office cubicles and administrative desks
  • Large-scale deployments in schools, retail, or manufacturing where advanced features are not a priority
  • Hallways, classrooms, or breakrooms needing cost-effective, durable endpoints
  • Spaces where wall mounting is required

The Cisco 3905 Unified SIP Phone (CP-3905) is a budget-friendly, entry-level IP phone designed for basic voice communications. It is primarily used where simple telephony is needed, such as in cubicles, classrooms, retail, manufacturing floors, and hallways, with features allowing for either desk or wall-mount deployment.

Specifications

Specifications for Cisco 3905 Unified SIP Phone (CP-3905) | New


ManufacturerCisco
Manufacturer Part NumberCP-3905
Product NameCisco 3905 Unified SIP Phone (CP-3905)
Product TypeSIP Phone
Display128 x 32 pixel monochrome LCD (non-backlit)
Line Keys1
Simultaneous Calls per Line2
Feature Keys8 (transfer, hold, redial, speaker, mute, volume, etc.)
SpeakerphoneYes, full-duplex
Ethernet Ports2 x 10/100BASE-T RJ-45 (network + downstream PC)
PowerIEEE 802.3af PoE (Class 1), 100-240 VAC adapter (optional)
Audio CodecsG.711a, G.711u, G.729, G.729a, G.729ab
VoIP ProtocolsSIP, RTCP
Memory4MB Flash, 32MB SDRAM
Dimensions (W x D x H)205 x 53.5 x 150 mm (8.07 x 2.11 x 5.91 in)
Weight594.3 g (20.96 oz)
Operating Temp/Humidity0–40°C (32–104°F); 10–95% RH
Wall MountableYes
Firmware UpgradableYes
Compatible with CUCMVersion 7.1 or later

User Guides

Cisco 3905 Unified SIP Phone (CP-3905) Data Sheet
Cisco 3905 Unified SIP Phone (CP-3905) Quick Guide

Frequently Asked Questions

Cisco 3905 Unified SIP Phone (CP-3905)
Frequently Asked Questions (FAQ's)



What type of phone system is the Cisco 3905?
  • The Cisco 3905 is a SIP-based IP phone designed for use with Cisco Unified Communications solutions, providing reliable VoIP functionality for basic office communication needs.
    • Is the Cisco 3905 compatible with Cisco Unified Communications Manager?
  • Yes, the Cisco 3905 is compatible with Cisco Unified Communications Manager (CUCM) versions 8.5.1 and above, making it ideal for Cisco-centric VoIP networks.
    • What features does the Cisco 3905 support?
  • The phone supports essential call features including call hold, transfer, conferencing, caller ID, call waiting, and voicemail indicator, making it suitable for standard business use.
    • Does the Cisco 3905 include an integrated Ethernet switch?
  • Yes, it includes a 10/100 Mbps two-port Ethernet switch, allowing a connected PC to share the same network drop as the phone.
    • Is Power over Ethernet (PoE) supported on the Cisco 3905?
  • Yes, the Cisco 3905 supports PoE (IEEE 802.3af Class 1), allowing it to receive power through the Ethernet cable from a compatible switch or injector.
    • Can the Cisco 3905 be used with a headset?
  • Yes, the Cisco 3905 includes a dedicated RJ-9 headset port, allowing for hands-free operation with compatible wired headsets.
    • What kind of display does the Cisco 3905 have?
  • The phone features a 128 x 32-pixel monochrome display that provides clear call status information and caller ID.
    • Is the Cisco 3905 wall-mountable?
  • Yes, the Cisco 3905 comes with built-in wall-mount hardware, making it suitable for desks, cubicles, and wall-mounted installations.
    • What audio codecs does the Cisco 3905 support?
  • The phone supports common audio codecs including G.711a, G.711u, G.729a, and iLBC, ensuring good audio quality over various network conditions.
    • Is the Cisco 3905 suitable for low-use areas?
  • Yes, it’s ideal for common areas, lobbies, break rooms, or environments where basic VoIP communication is needed without advanced features.
    • Can the Cisco 3905 be configured remotely?
  • Yes, administrators can configure and manage the Cisco 3905 remotely using Cisco Unified Communications Manager, enabling efficient deployment.
    • How many lines does the Cisco 3905 support?
  • The Cisco 3905 supports a single SIP line, which is sufficient for basic voice communication needs in many business environments.
    • Does the Cisco 3905 support VLAN tagging?
  • Yes, the Cisco 3905 supports 802.1Q VLAN tagging, helping to separate voice and data traffic for improved network performance and security.
    • What is the build quality of the Cisco 3905?
  • The Cisco 3905 is built with durable materials and designed for long-term use in business settings, offering reliability with minimal maintenance.
    • Is the Cisco 3905 energy efficient?
  • Yes, it is designed with energy efficiency in mind and complies with Energy Star guidelines, making it suitable for organizations looking to reduce energy consumption.
    • Can I assign speed dials on the Cisco 3905?
  • Yes, you can configure speed dial options through the Cisco Unified Communications Manager, enhancing call efficiency.
    • What network protocols are supported by the Cisco 3905?
  • The phone supports multiple network protocols, including SIP, CDP, LLDP-MED, and DHCP, ensuring smooth integration into enterprise networks.
    • Is there a web interface for managing the Cisco 3905?
  • No, the Cisco 3905 is typically managed centrally through Cisco Unified Communications Manager rather than an individual web interface.
    • What languages are supported on the Cisco 3905?
  • The Cisco 3905 supports multiple user interface languages, including English, French, Spanish, German, and more, depending on the CUCM configuration.
    • What’s the ideal use case for the Cisco 3905?
  • The Cisco 3905 is best suited for environments needing affordable, reliable voice communications, such as call centers, entry-level users, or public/common areas.
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