TELECOM

Nokia Corporation is a Finnish multinational telecommunications, information technology, and consumer electronics corporation

Cisco Systems, Inc., American-based multinational digital communications technology conglomerate corporation

Telefonaktiebolaget LM Ericsson Swedish multinational networking and telecommunications company

Lenovo Group Limited American -Chinese multinational technology company specializing in designing, manufacturing, and marketing consumer electronics, personal computers, software, business solutions, and related services

Siemens is a German multinational conglomerate corporation and the largest industrial manufacturing company in Europe.

Juniper Networks, Inc. is an American multinational corporation