| Name | Title | Contact Details |
|---|
Communications Systems, Inc. (CSI) operates directly and through its subsidiaries located in the United States, Costa Rica and the United Kingdom. CSI is principally engaged in the manufacture and sale of modular connecting and wiring devices for voice
OPEX Communications is a Elk Grove Village, IL-based company in the Telecommunications sector.
Ronan Telephone Co is a Ronan, MT-based company in the Telecommunications sector.
PORTER Instrument is a North Reading, MA-based company in the Telecommunications sector.
United Telecom is a Petoskey, MI-based company in the Telecommunications sector.