Twr Communications is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Paging & Signaling Equipment
• Telecommunications Services

North American Industry Classification System (NAICS) Categories:

• Other Electronic Parts And Equipment Merchant Wholesalers > Communication Equipment > Paging & Signaling Equipment
• Wired Telecommunications Carriers > Telecommunications Services

Standard Industry Classification (SIC) Categories:

• Telephone Communications, Except Radio > Telecommunications Services
• Electronic Parts & Equipment > Communication Equipment > Paging & Signaling Equipment