Avaya ERS 4000 Series

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Ethernet Routing Switch 4526FX
Avaya 4000 Stack.jpg
ERS 4526FX
Rack mountable: 1RU, 19-inch standard rack
ERS 4526TD / ERS 4526TD-PWR
Rack mountable: 1RU, 19-inch standard rack
ERS 4550TFD / ERS 4550FD-PWR
Rack mountable: 1RU, 19-inch standard rack

Ethernet Routing Switch 4000 Series or (ERS 4000) in computer networking terms are stackable Layer3 (routers) and Layer 2 (switches) designed and manufactured by Avaya for Ethernet devices. The ERS 4000 Series consists of two major groups of devices, the ERS 4500 models and the ERS 4800 models.


The first set of ERS 4500 Series became available in February 2007 from Nortel with the release of software version 5.0.[1] The Switches are 1U high and five models were originally available which consisted of the; 4526FX, 4550T, 4550T-PWR, 4548GT and 4548GT-PWR.[2]

In 2008 a detailed evaluation of the systems was performed by Tolly.[3] In 2009 The United States Department of Defense performed extensive testing of the ERS 4500 Series and approved and certified these for use in the Assured Services Voice Application Local Area Network (ASVALAN) systems of the DoD.[4] In March 2011 the Australian Department of Defense installed the ERS 4500 Series with other Avaya data equipment to support their over 90,000 users.[5] In December 2011 this system completed evaluation and certification by the U.S. Joint Interoperability Test Command (JITC) testing center for use in the United States Department of Defense as an Assured Services Local Area Network (ASLAN).[6]


  1. ^ "Nortel Ethernet Routing Switch 4500 Series Overview". Nortel. 23 February 2007. Retrieved 6 January 2011. 
  2. ^ "Ethernet Routing Switch 4500 Series Release Notes". Nortel. 24 April 2007. p. 9. Retrieved 6 January 2011. 
  3. ^
  4. ^ "ASVALAN Certification" (PDF). Defense Information Systems Agency. 18 December 2009. Archived from the original (PDF) on July 2011. Retrieved 2 August 2011. 
  5. ^
  6. ^ JITC (DoD) (16 December 2011). "Special Interoperability Test Certification of the Avaya Ethernet Routing Switch (ERS)5600 Series with Release" (PDF). DISA. Archived from the original (PDF) on 24 December 2011. Retrieved 20 December 2011. 

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