Spirent Communications (SPT.L) (SPNUF) is a hardware and software testing company based in the UK with a long history in the field. Its products traditionally helped test equipment such as routers and switches to assure their manufacturers that the products worked as advertised. Its customer base in this area includes market leaders such as Cisco, Juniper, Arista Networks, Ericsson, etc. Over the years the company has broadened its solution set and now provides service assurance products for telecom service providers such as AT&T and Verizon, as well as GPS testing equipment to the government and