Business Phone Expansions & Accessories
Add programmable call controls or connect compatible analog equipment to your business phone system.
Explore Snom and Grandstream expansion modules for extension monitoring and speed dialing, plus an analog telephone adapter for compatible phones and fax machines. VOIPX helps match the right accessory to your equipment and configures it around your business.
Explore Our Phone Accessories
Snom D7C - Color Display Expansion Module
The Snom D7C adds a dedicated color display and programmable keys to a compatible Snom desk phone. Employees can access frequently used extensions and speed dials across three pages, with multicolor LEDs providing status indications for configured functions.
Key Features
- Display: 6.8-inch color LCD
- Physical keys: 16 programmable keys with multicolor LEDs
- Key pages: Three
- Total assignments: Up to 48 per module
- Expansion capacity: Connect up to three modules for 144 programmable assignments
- Connection: USB connection to a compatible host phone
- Functions: Configurable extension monitoring, speed dialing, and supported phone functions
- Compatible VOIPX desk phones: Snom D735 and D785
Ideal for: Receptionists and administrative staff who need quick access to multiple extensions and frequently called contacts.
Snom D8C - Expansion Module for Snom D812 and Snom D815
The Snom D8C adds 20 programmable smart label keys to compatible Snom D812 and Snom D815 desk phones.
Key Features
- Expansion module used with SNOM D812 and D815
- Features 20 smart label keys with 3 pages (60 programmable keys)
- Device powered by the host phone
- Up to 3 modules can be cascaded to provide a display with up to 180 smart label keys
Ideal for: Employees who need extra programmable keys for speed dialing and extension monitoring on a compatible Snom desk phone.
Grandstream GXP2200 EXT - Desk Phone Expansion Module
The Grandstream GXP2200 EXT adds programmable extension keys and a backlit LCD to compatible Grandstream phones. Two pages provide access to 40 assignments per module, with support for connecting additional modules as your call-handling needs grow.
Key Features
- Display: Backlit graphical LCD
- Physical keys: 20 programmable extension keys with bicolor LEDs
- Navigation: Two arrow keys for page switching
- Total assignments: Up to 40 per module across two pages
- Expansion capacity: Connect up to four modules for 160 assignments
- Power and control: Provided by the compatible host phone
- Functions: BLF, speed dial, and other supported call-handling functions
- Compatible phones: Grandstream GXV3240, GXP2140, and GXP2170
Ideal for: Reception desks and employees managing frequent calls across multiple departments or extensions.
Grandstream HT801 ATA - Single-Port Analog Telephone Adapter
The Grandstream HT801 connects a compatible analog telephone or fax machine to an IP phone service. Its single analog port provides an option for businesses that want to retain suitable existing equipment when using VoIP.
Key Features
- Device type: Analog telephone adapter
- Analog connection: One FXS port
- SIP configuration: One SIP profile
- Network connection: One 10/100 Mbps Ethernet port
- Fax support: T.38 Fax over IP
- Security support: TLS, SRTP, and HTTPS
- Equipment support: Compatible analog telephone or fax machine
Ideal for: Businesses that need to connect an existing analog phone or physical fax machine to a compatible VoIP service.
Yealink WH62 Mono - DECT Wireless Headset
DECT wireless headset with up to 525 ft. (160 m) of range and up to 13 hours of talk time, connecting to desk phones and PCs.
Key Features
- DECT Wireless Freedom - Up to 525 ft. (160 m)
- All-Day Battery - Up to 13 hours of talk time
- Acoustic Shield Technology - Reduces background noise
- Lightweight Mono design - Comfortable, open-ear awareness
- Desk Phone & PC Connectivity - Easy call controls
Ideal for: Single-ear use where staying aware of your surroundings matters during calls.
Yealink WH62 Dual - DECT Wireless Headset
Dual-ear DECT wireless headset with up to 525 ft. (160 m) of range, up to 13 hours of talk time, and stereo audio, connecting to desk phones and PCs.
Key Features
- DECT Wireless Freedom - Up to 525 ft. (160 m)
- All-Day Battery - Up to 13 hours of talk time
- Acoustic Shield Technology - Reduces background noise
- Dual-ear Stereo Design - Enhanced focus & stereo audio
- Desk Phone & PC Connectivity - Easy call controls
Ideal for: Users who want enhanced focus with dual-ear stereo audio during calls.
Yealink YHS 34 Lite - Wired Mono Headset
Wired mono headset with plug-and-play QD-to-RJ9 connectivity, HD voice quality, and lightweight comfort for all-day use.
Key Features
- Wired Mono Headset - Stay aware of surroundings
- Plug-and-Play - QD-to-RJ9 connectivity
- HD Voice - Clear audio & noise reduction
- Lightweight Comfort - Designed for all-day use
Ideal for: Everyday office calling over a simple wired connection.
Choose the Accessory for Your Task
Monitor More Extensions
An expansion module provides dedicated keys for configured extensions and contacts. It can help reception and administrative staff see extension status and reach the right person quickly.
Add Speed-Dial Shortcuts
Give employees convenient access to frequently called numbers and supported phone functions. VOIPX programs the assignments around each employee’s responsibilities.
Connect Existing Analog Equipment
An analog telephone adapter provides a connection for a compatible analog phone or fax machine. VOIPX reviews the equipment and service requirements to determine whether the HT801 is suitable.
Phone Expansion & Accessory FAQs
What is a phone expansion module?
A phone expansion module is an accessory that connects to a compatible desk phone and adds programmable keys. These keys can provide access to speed dials, extension monitoring, and other functions supported by the phone system.
Does an expansion module work as a separate phone?
No. The Snom D7C and Grandstream GXP2200 EXT operate through a compatible host phone. They add controls to that phone rather than functioning as independent calling devices.
What are BLF keys?
BLF stands for Busy Lamp Field. When supported and configured by the phone system, these keys use indicator lights to show the status of assigned extensions. Their exact behavior depends on the system configuration.
Are expansion modules compatible with every desk phone?
No. Expansion modules are designed for specific phone models. The D7C supports the Snom D735 and D785, while the GXP2200 EXT supports the Grandstream GXV3240, GXP2140, and GXP2170. VOIPX can confirm compatibility before adding equipment.
What is the difference between physical keys and programmable assignments?
A physical key is a button on the module. Page switching allows the same button to access different assignments. For example, the D7C has 16 physical keys across three pages, providing 48 programmable assignments.
What does an analog telephone adapter do?
An analog telephone adapter, or ATA, connects compatible analog equipment to an IP phone service. The HT801 provides one FXS port for an analog device and an Ethernet connection to the network.
Can the HT801 connect a fax machine to VoIP?
Yes, the HT801 supports T.38 Fax over IP for use with compatible fax equipment and service. Successful fax operation depends on the fax machine, network, provider support, and configuration.
Does adding an expansion module add more phone lines?
No. An expansion module adds programmable controls. It does not automatically increase your service’s phone numbers, SIP accounts, or simultaneous-call capacity.
Does VOIPX configure these accessories?
Yes. VOIPX helps confirm compatibility and configures supported accessories for your phone system, including extension monitoring, speed-dial assignments, and analog device connections.
Complete Your Business Phone Setup
Get help selecting compatible expansion modules and adapters for your employees, desk phones, and existing equipment.
