Mitel 6905 - 50009432 3PCC Phone
The Mitel 6905 3PCC 50009432 is an entry-level Open SIP IP phone designed for third-party and standards-based SIP communications platforms. It combines a compact 2.75-inch graphical display, three programmable personal keys, dual Fast Ethernet ports, Power over Ethernet, and HD wideband audio in a simple business phone built for essential calling requirements.
Designed for shared spaces, common areas, light-use office positions, retail environments, hospitality, classrooms, and other cost-conscious business deployments, the 6905 provides straightforward call controls, a full-duplex speakerphone, Gigabit-free 10/100 Ethernet pass-through, analog headset support, and flexible desk or wall installation without the complexity of higher-end touchscreen or wireless models.
Key Features
- Mitel 6905 Open SIP / 3PCC IP phone
- Exact manufacturer part number 50009432
- Designed for compatible third-party and standards-based SIP call-control environments
- 2.75-inch graphical LCD display
- 128 × 48 pixel display resolution
- Non-backlit display
- 3 programmable personal keys with LED indicators
- Press-and-hold speed-dial configuration
- 4-way navigation key with Select / OK
- Single call-line operation
- Mitel Hi-Q HD wideband audio
- Wideband handset
- Wideband full-duplex speakerphone
- Hearing Aid Compatible handset
- Analog headset support through handset interface
- 2 x 10/100 Mbps Fast Ethernet ports
- PC / network-device pass-through
- IEEE 802.3af Power over Ethernet
- PoE Class 1
- Optional local AC power support
- Optional external Mitel WLAN Adapter support
- 30° / 60° reversible desktop stand
- Optional Mitel 6900 Series wall-mount support
- Compact design for shared and light-use business environments
Applications & Use Cases
- Third-party SIP phone systems
- Open SIP communications platforms
- RingCentral deployments
- Shared workspaces
- Common-area phones
- Break rooms and employee areas
- Retail stores
- Hospitality environments
- Classrooms and educational facilities
- Light-use office positions
- Warehouse and stock-room phones
- Small and midsize businesses
- Managed VoIP deployments
- MSP and systems-integrator installations
Technical Specifications
Product & Call Control
- Product: Mitel 6905 3PCC SIP Phone
- Manufacturer Part Number: 50009432
- Phone Family: Mitel 6900 Series
- Protocol: SIP
- Deployment Type: Open SIP / Third-Party Call Control
- Call Lines: Single Line
- Feature Availability: Dependent on SIP Platform, Firmware and Provisioning
Display & Controls
- Display: 2.75-Inch Graphical LCD
- Resolution: 128 × 48 Pixels
- Backlight: No
- Programmable Personal Keys: 3
- Programmable Key Indicators: LED
- Navigation: 4-Way Navigation with Select / OK
- Speed Dial: Press-and-Hold Configuration Supported
- Call / Message Waiting Indicator: Supported
Dedicated Calling Controls
- Line Key: Dedicated
- Hold: Dedicated
- Redial: Dedicated
- Goodbye / End Call: Dedicated
- Settings / Options: Dedicated
- Volume Up / Down: Dedicated
- Mute: Dedicated with LED
- Speaker: Dedicated with LED
Audio
- Audio Technology: Mitel Hi-Q HD Wideband Audio
- Handset: Wideband
- Hearing Aid Compatibility: Supported
- Speakerphone: Wideband Full-Duplex
- Hands-Free Calling: Supported
SIP Audio Codecs
- G.711 µ-law / A-law: Supported
- G.722: Supported
- G.722.1: Supported
- G.729: Supported
- Codec Availability: Can Vary by SIP Call-Control Platform
Headset Support
- Analog Headset: Supported
- Connection: Handset RJ11 Interface
- USB Headset: No USB Host Port
- Bluetooth Headset: No Built-In Bluetooth
- DHSG / EHS: Not a Native 6905 Feature
Ethernet & Networking
- Ethernet Ports: 2
- Ethernet Speed: 10/100 Mbps Fast Ethernet
- LAN Port: 10/100 Mbps
- PC Pass-Through Port: 10/100 Mbps
- PC Port PoE Output: Not Supported
- Recommended Cabling: Category 5 / 5e or Better
- VLAN / QoS: IEEE 802.1p/Q Support
- Network Authentication: IEEE 802.1X Support
Wireless Connectivity
- Built-In Wi-Fi: No
- Built-In Bluetooth: No
- Optional Wireless Networking: Supported with Compatible External Mitel WLAN Adapter
- WLAN Adapter: Sold Separately
Power
- Power over Ethernet: IEEE 802.3af
- PoE Class: Class 1
- Local Power: Supported with Compatible Mitel AC Adapter
- AC Power Adapter: Sold Separately
Desk & Wall Installation
- Desk Stand: Reversible Stand Included
- Low Viewing Angle: 30°
- High Viewing Angle: 60°
- Wall Mounting: Supported
- Optional Wall Mount Kit: Mitel 50008299
- Wall Installation: Direct Wall or Compatible Telco Wall Plate
Physical & Environment
- Approximate Dimensions: 6.1 × 5.9 × 7.5 in / 15.4 × 14.9 × 19 cm
- Approximate Weight: 1.58 lb / 0.72 kg
- Operating Temperature: +4°C to +49°C
- Installation: Indoor Use
Package Includes
- Mitel 6905 SIP / 3PCC IP Phone
- Wideband Handset
- Handset Cord
- Reversible 30° / 60° Desktop Stand
Compatibility & Buying Information
Exact SKU: This page is for Mitel part number 50009432, the 6905 SIP / 3PCC phone intended for compatible Open SIP and third-party call-control environments.
3PCC / Open SIP Version: The 50009432 should be selected when a standards-based SIP endpoint is required for a compatible hosted, cloud, UCaaS, or on-premises SIP communications platform. Available features depend on the service provider and provisioning configuration.
Different from 50008301: NTS Direct separately lists Mitel 50008301 as the standard 6905 IP Phone. Customers specifically requiring the 3PCC / Open SIP version should order 50009432.
Single-Line Phone: The 6905 is designed around a single call line with three programmable personal keys. Customers who need significantly more line appearances or programmable functions should consider a higher-capacity 6900 Series model.
Three Programmable Keys: The three paper-labeled personal keys can be provisioned for functions such as speed dials and other supported telephony features, depending on the connected SIP platform.
Fast Ethernet: The 6905 provides two 10/100 Mbps Ethernet ports. It does not provide Gigabit Ethernet, which distinguishes it from higher-end 6900 Series models such as the 6910, 6920W, 6930W, and 6940W.
PC Pass-Through: A computer or compatible network device can share the Ethernet connection through the secondary 10/100 Mbps port. The PC port does not supply PoE power to the connected device.
PoE Class 1: The phone can receive power through an IEEE 802.3af-compliant network connection. A compatible Mitel AC adapter can be used when PoE is unavailable and is sold separately.
No Built-In Wi-Fi or Bluetooth: The 6905 does not include integrated Wi-Fi or Bluetooth. Compatible wireless networking can be added separately with an external Mitel WLAN Adapter where supported.
Analog Headset Support: The SIP version supports a compatible analog headset through the handset RJ11 interface. The 6905 does not provide USB, Bluetooth, or native DHSG / EHS headset connectivity.
Wideband Audio: Mitel Hi-Q technology, a wideband handset, and a full-duplex wideband speakerphone provide improved voice clarity for both handset and hands-free calls.
RingCentral: RingCentral currently offers the Mitel 6905 as an entry-level business IP phone, and the supplied RingCentral datasheet is useful for buyers deploying this model with RingCentral service.
Desk Installation: The included reversible stand supports both 30-degree and 60-degree viewing positions.
Wall Mounting: The 6905 can be wall mounted using the optional Mitel 6900 Series Wall Mount Kit 50008299, either directly to a wall or over a compatible telco wall plate.
SIP Documentation: Part 50009432 should use the Mitel 6905 SIP User Guide, Installation Guide, and Quick Reference Guide rather than the separate MiNet documentation branch.
Best Fit: Mitel 6905 50009432 is ideal for shared areas, light-use office positions, retail, hospitality, education, and other Open SIP deployments that need reliable HD voice, basic programmable functions, PoE, and simple business calling at an entry-level price point.