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.

Digium Appliance - Switchvox E520 - Side of Appliance Digium Appliance - Switchvox E520 - Back of Appliance


  • 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
Compare all Switchvox Appliances

Compare Switchvox Appliances to Find the Right Fit for Your Business

Switchvox Appliances - E510 Switchvox Appliances - E520 Switchvox Appliances - E530 Switchvox Appliances - E540
Switchvox E510 Switchvox E520 Switchvox E530 Switchvox E540
Phones Phones150 Phones300 Phones600 Phones600
Concurrent Calls Concurrent Calls50 Concurrent Calls100 Concurrent Calls200 Concurrent Calls200
Storage StorageSSD StorageSSD StorageSSD StorageMirrored SSD
Internal Dell Remote Access Controller (iDRAC) iDRACNo iDRACNo iDRACiDRAC8 Enterprise iDRACiDRAC8 Enterprise

Call to ActionAdditional add-ons are available to add spare appliances, warranties, and more to your system. View Add-Ons

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

- 3 and 5-year extended warranties

- Additional years of 24/7 support

- IP phones designed for Switchvox

- VoIP gateways to convert legacy phone connections

- SIP trunks


  • 1ASE520000LF - Switchvox E520 Appliance, North America 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


  • 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 Digium 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 Digium's advertised number of maximum concurrent activities or conducting other concurrent activities not listed above can adversely impact call quality.

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