Telephone Systems Service Division

Telephone Systems Service Division is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Holding Companies
• Telephones Communications Services

North American Industry Classification System (NAICS) Categories:

• Wired Telecommunications Carriers > Local & Long Distance Telephone Service
• Offices Of Other Holding Companies

Standard Industry Classification (SIC) Categories:

• Telephone Communications, Except Radio > Local & Long Distance Telephone Service
• Offices Of Holding Companies, Nec > Holding Companies