Snom D7 (W)

Expansion module

Key features

  • Colour: White
  • 18 freely programmable, coloured LED buttons
  • Plug-and-play
  • Expandable with up to two additional modules

The extension module for the Snom D7xx Series

The Snom D7 is the perfect extension module for the Snom D7xx series desk phones with USB connection.

The expansion module allows users who make a lot of calls greater flexibility and productivity by providing 18 programmable LED function keys with features such as line hold, speed dial, extension and presence indication.

The Snom D7 with its high-resolution black-and-white display can be easily connected via plug-and-play using a USB cable. Up to three extension modules can be connected in series to expand the range of functions enormously. This provides up to 54 additional function keys.


  • Please note that from the second connected D7 onwards, this must be supplied with power using an additional Snom power supply unit. This will then power the second and, if desired, the third D7 in the series.
  • As each D7 has a USB port, other devices such as a USB headset can be connected to the last connected D7 in the row.
  • In addition to the D7, the Snom D7C with a colour display and 16 additional programmable function keys is also available for the Snom D7xx series desk phones.


18 programmable,
multi-coloured LED keys

The keys can be assigned with all functions available on the Snom phones, e.g. short and direct dial or extension. The multicolour LEDs indicate the call and presence status of a direct dialling.

Up to 3 expansion packs can be combined

If you really need a lot of programmable function keys, the Snom D7 is just right for you, because you can connect up to 3 in a row to each Snom desk phone.

Available in black and white

Matching the colour of the Snom D7xx series desk phone to which the extension module is connected.

Overview of Series

Technical features


Expansion module connectable

To have additional speed dial or BLF keys available on your desk phone, this device can be supplemented with expansion modules.


Plug & Play

This device comes with Plug & Play. This means you can use accessories connected via USB without rebooting the phone.


Self-labeling keys in additional display

Unlike in the past, where the freely programmable function keys were labeled by means of paper, this device has labeling in a display.


USB port

This device has at least one USB port.


Help with questions about products, availability and prices


Contact person

Snom HQ Berlin

+49 30 39833-0

Where can you find a Snom partner near you?

You want to buy our products and need advice? Then you have come to the right place.


Which distributor offers the products?

Snom is available all over the world. If you are looking for a wholesaler, you can find here all our partner distributors sorted by country.


Find the right telephone system (PBX).


List of our compatible PBX


If you would like to know whether your desired phone is compatible with the PBX you are using, you can view the on our PBX partner overview page in the Service Hub.



Information on choosing a PBX


Do you need information when choosing a suitable PBX for your desired telephone? We have compiled some tips for you in the guide on what you should look out for.


Technical data




Expand all add
add remove

The latest firmware for your Snom device can be found at the link below. When updating, please follow all safety instructions and take into account which firmware version is currently permitted by the PBX you are using.

You may not be able to update your Snom device manually, but only via the web interface of your PBX.


How To´s, FAQ & Co.

In the Service Hub we have created a variety of instructions and help for you.


Contact person

Headquarter Berlin

+49 30 - 39833-0
Office hours: Mo-Fr 9:00-17:00 (CET)


Inhouse Sales
Inhouse Sales

language Sales DACH

phone +49 30 39833 0



Snom Technology GmbH
Aroser Allee 66
13407 Berlin

Phone: +49 30 39833-0
Fax: +49 30 39833-111


Search for help

Are you looking for help with a problem, a manual, an answer to your question or the latest firmware for your Snom device?

We have set up the Snom Service Hub to provide you with everything you need.



Snom D865

Thank you for visiting the Snom website

Please choose the regional Snom website you would like to visit.

For the United States, Canada, Central and South America:

For the Rest of the World: