Jabra - Mitel H40 DECT Stereo Headset - 51310038 - 9559-553-125
The Mitel H40 DECT Stereo Headset 51310038 is a professional wireless headset based on the Jabra Engage 65 Stereo platform, North American part number 9559-553-125. Designed for desk-phone and computer communications, the H40 combines secure DECT wireless technology, a noise-canceling dual-microphone system, stereo audio, integrated Busylight, and a dedicated charging base for busy offices, contact centers, support teams, and other high-call-volume business environments.
With wireless range up to 150 meters / 490 feet and up to 13 hours of talk time, users can move throughout the office while remaining connected to calls. The base supports both a compatible desk phone and computer/softphone connection, while DECT Security Level C and 256-bit AES encryption help protect confidential wireless conversations. Additional H40 / compatible Engage headsets can also be added to the same base for training and conference-call applications.
Key Features
- Mitel-branded professional DECT stereo wireless headset
- Exact Mitel part number 51310038
- Based on Jabra Engage 65 Stereo
- Jabra North American part number 9559-553-125
- Stereo over-the-head wearing style
- Designed for desk phone and computer / softphone connectivity
- DECT wireless range up to 150 m / 490 ft
- Up to 13 hours of talk time
- Approximately 90-minute full charging time
- Approximately 40% battery charge in 30 minutes
- Integrated charging base
- Advanced noise-canceling dual-microphone system
- Wideband voice audio
- Music playback bandwidth up to 16 kHz
- Integrated Busylight
- DECT Security Level C
- 256-bit AES wireless encryption
- Secure headset-to-base pairing
- PowerNap battery-saving mode
- Answer, end, reject, volume, and mute controls on headset
- Conference support with up to 3 additional headsets on one base
- Automatic charging when docked
- Jabra Direct software support
- Firmware updates and device configuration through Jabra Direct
- No Bluetooth connection - wireless headset link uses DECT
Applications & Use Cases
- Corporate office communications
- Contact centers
- Customer-service teams
- Help desks and technical support teams
- Reception and administrative workstations
- High-call-volume business users
- Desk phone and PC softphone environments
- Hybrid office communications
- Professional services organizations
- Healthcare and financial-services offices
- Employee training and call monitoring
- Multi-headset conference calls
- Users requiring mobility throughout an office
- Secure wireless business conversations
Technical Specifications
Product
- Product: Mitel H40 DECT Stereo Headset
- Mitel Part Number: 51310038
- Jabra Platform: Jabra Engage 65 Stereo
- Jabra Part Number: 9559-553-125
- Region: North America
- Headset Type: Wireless DECT Stereo Headset
- Wearing Style: Over-the-Head Stereo
Wireless
- Wireless Technology: DECT
- Maximum Published Range: Up to 150 m / 490 ft
- Bluetooth: No
- NFC: No
- Primary Wireless Link: Headset to Dedicated DECT Base
- Actual Range: Depends on Building Construction, Interference and Office Environment
Audio
- Headset Configuration: Stereo / Dual Speaker
- Speaker Size: 28 mm
- Speaker Frequency Range: 40 Hz to 16 kHz
- Voice Bandwidth: Approximately 150 Hz to 6.8 kHz
- Music Bandwidth: 40 Hz to 16 kHz
- Microphone: Dual-Microphone System
- Microphone Type: Unidirectional ECM and Analog MEMS
- Microphone Frequency Range: Approximately 100 Hz to 7.3 kHz
- Noise-Canceling Microphone: Yes
Security
- DECT Security: Security Level C
- Payload Encryption: 256-Bit AES
- Authentication: Secure Headset-to-Base Authentication
- Algorithms: FIPS-Approved Algorithms Used for Key Generation, Payload Encryption and Authentication
Battery & Charging
- Talk Time: Up to 13 Hours
- Full Charge: Approximately 90 Minutes
- Fast Charge: Approximately 40% in 30 Minutes
- Charging Method: Dock Headset in Base
- PowerNap: Supported
- Battery: Rechargeable / Replaceable on Stereo Variant
Connectivity
- Desk Phone: Supported
- Computer / Softphone: Supported
- USB Connection: Micro-USB from Base to Computer
- Desk Phone Audio: RJ-9
- Handset Connection: RJ-9
- AUX Interface: RJ-45
- Mobile / Tablet Bluetooth: Not Supported
Headset Controls
- Answer / End Call: Supported
- Reject Call: Supported
- Volume Adjustment: Supported
- Microphone Mute: Supported
- Busylight: Integrated
- Voice Prompts: Supported
Conference & Training
- Primary Headset: 1
- Additional Conference Headsets: Up to 3
- Total Headsets Sharing Audio: Up to 4 Including Primary Headset
- Additional Headset Pairing: Through Base Docking or Wireless Pairing
- Training / Monitoring Applications: Supported
Software
- Jabra Direct: Supported
- Firmware Updates: Supported
- Device Settings: Configurable
- Voice Prompt Configuration: Supported
- Softphone Integration: Platform Dependent
Physical
- Headset Dimensions: Approximately 141 × 32 × 169 mm
- Headset Weight: Approximately 83 g / 2.9 oz
- Base Dimensions: Approximately 93 × 90 × 106 mm
- Base Weight: Approximately 203 g / 7.2 oz
- Operating Temperature: -10°C to +55°C
Package Includes
- Mitel H40 / Jabra Engage 65 Stereo DECT Headset
- DECT Charging Base
- Power Supply
- USB Cable
- Desk Phone Cable
- Documentation / Quick Start Information
Compatibility & Buying Information
Exact Product: This page is for Mitel part number 51310038, the Mitel H40 DECT Stereo Headset. Mitel's documentation maps the H40 to the Jabra Engage 65 platform, and the corresponding North American Jabra stereo SKU is 9559-553-125.
DECT, Not Bluetooth: The H40 uses professional DECT wireless technology between the headset and its dedicated base. It does not contain Bluetooth and should not be purchased for direct Bluetooth pairing to a smartphone or tablet.
Desk Phone and Computer: The base is designed to connect to a compatible desk phone and computer / softphone workstation, allowing the same wireless headset to be used with both communications environments.
490-Foot Range: Jabra specifies up to 150 meters / 490 feet of DECT range for the stereo and mono Engage 65 variants. Actual indoor range will normally be reduced by walls, floors, building materials, interference, and office layout.
13-Hour Battery: The stereo headset provides up to 13 hours of talk time. A full charge takes approximately 90 minutes, while approximately 40% charge can be reached in 30 minutes.
Secure Wireless Calls: The Engage 65 platform uses DECT Security Level C and 256-bit AES encryption to protect the wireless connection between the headset and base.
Busylight: Integrated red Busylight indicators help coworkers see when the headset user is on a call or does not want to be interrupted.
Conference Mode: Up to three additional compatible headsets can be joined to one base for a total of four users sharing call audio. This can be useful for training, supervision, and collaborative calls.
Remote Call Control: Basic headset controls include call answer / end, reject, mute, and volume adjustment. Full remote desk-phone call-control capability can depend on the connected phone, firmware, EHS configuration, and communications platform.
Computer Use: The supplied USB connection allows the H40 base to operate with compatible PC softphones and UC applications. Jabra Direct can be used for supported firmware updates and device configuration.
Not the Engage 65 SE: Part number 9559-553-125 corresponds to the original North American Jabra Engage 65 Stereo platform. Buyers should not assume specifications or cables unique to newer Engage 65 SE revisions are included with this Mitel H40 SKU.
Best Fit: Mitel H40 51310038 is well suited to contact centers, help desks, administrative staff, customer-service representatives, and other professional users who need long-range secure wireless mobility, stereo audio, all-day battery life, and connectivity to both a desk phone and computer.
Mitel H40 / Jabra Engage 65 Stereo Headset Overview