Armstrong Telephone Co-No Sonet Modem

Armstrong Telephone Co-No Sonet Modem is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Telecommunications Companies

North American Industry Classification System (NAICS) Categories:

• Wired Telecommunications Carriers > Telecommunications Companies

Standard Industry Classification (SIC) Categories:

• Telephone Communications, Except Radio > Telecommunications Companies