Avaya ERS 5500 Series
SERIES OF STACKABLE LAYER 3 SWITCHES USED IN COMPUTER NETWORKING
Nortel ERS 5500; Avaya ERS 5500
The Ethernet Routing Switch 5500 Series or (ERS 5500) is a series of stackable, Layer 3 switches used in computer networking. The ERS 5000 was originally designed by Nortel and is now manufactured by Avaya.