Switchvox Appliances
Switchvox E520

Find the right Switchvox appliance for your business needs.


Switchvox E520

The Switchvox E520 delivers superior communications power for up to 400 phones and 100 concurrent calls. It comes equipped with a quad-core processor, solid state drive, and all the advanced Unified Communications (UC) features of Switchvox packed into one appliance. The E520 is powered by Dell EMC hardware and backed by Digium’s 24/7 support, including Next Business Day Parts and On-Site Service if required. With the E520, your business communications needs are met around the clock.


  • Supports up to 400 phones
  • Up to 100 concurrent calls
  • Quad-core processor
  • SSD storage
  • Weight: 6 lbs including packaging
  • Power supply: External inline, 65W
  • Dimensions: 7.2”D x 7.0”W x 1.2”H
  • Appliance requires Switchvox or higher
Additional add-ons are available to add spare appliances, warranties, and more to your system.

How to Buy

Each new Switchvox system installation should include the purchase of Switchvox software and Users that include 1 year of support and maintenance. Switchvox appliances come standard with a 1-year hardware warranty.

Choose Your Appliance

Switchvox E520

Purchase the Software

All features included

Add Your Users

1 year support & maintenance included

Select Your Add-ons

Extended warranties.
Additional support, IP Phones, VoIP gateways, SIP Trunks

  • 1ASE510000LF - Switchvox E510 Appliance, North American Power Adapter Included
Software and Support
  • 1SWXSMB00DL - Switchvox SMB Software
  • 1SWXPSUB1 - 1 Switchvox User with 1 Year Platinum Support and Maintenance Subscription
Optional Add-ons
  • ‍803-00031 - Extend Warranty to 3 Years
  • ‍803-00032 - Extend Warranty to 5 Years
  • ‍3244-00060 - 19” Rackmount Shelf for E510/E520/Gateway
  • ‍3244-00062 - Bracket, Wall Mount, Switchvox E520 Appliance
  • ‍‍3111-00021 - E520 Power Cable, NEMA 5-15P to C5 for Europe
  • ‍‍‍3111-00022 - E520 Power Cable, NEMA 5-15P to C5 for UK
  • ‍‍‍‍3357-00017 - E520 Replacement Power Adapter,100-240VAC, 65W, 19.5V, NA
  • ‍‍‍‍‍3111-00020 - E520 Power Cable, NEMA 5-15P to C5 for Australia

Contact Sales to purchase a Switchvox Appliance System


  • Each participant in a conference call is considered one of the concurrent calls.
  • If your organization will need to record a large percentage of calls (~40%), you might consider purchasing a larger appliance than you would have based on the maximum concurrent calls (or the E540 over the E530).
  • Please contact Sangoma Sales if you plan to:
    • Use “Ring All” features to simultaneously ring a large number of phones for calls, queues, pages, or intercoms. 
    • Use Presence/Status features with most or all of your users.
    • Use Switchboard queue widgets for large numbers of queues with large numbers of members in those queues.
    • Have more than the maximum users, but are within the maximum concurrent calls.
  • Exceeding Sangoma’s advertised number of maximum concurrent activities or conducting other concurrent activities not listed above can adversely impact call quality.
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