Business Telephone Supply is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Computers Networks
• Security Supplies & Services Surveillance Equipment
• Telecommunications Telephone Equipment Services & Systems

North American Industry Classification System (NAICS) Categories:

• Electrical Apparatus And Equipment, Wiring Supplies, And Related Equipment Merchant Wholesalers > Alarms, Signaling & Security Equipment > Security Supplies Surveillance Equipment
• Radio, Television, And Other Electronics Stores > Telephone & Communication Equipment
• Computer And Software Stores > Multimedia & Networking Devices & Products > Networking Products
• Communication Equipment Repair And Maintenance > Electronic Equipment Repair, Except Computers > Telecommunications Equipment & Systems Repair

Standard Industry Classification (SIC) Categories:

• Electrical Apparatus & Equipment > Alarms, Signaling & Security Equipment > Security Supplies Surveillance Equipment
• Computer And Computer Software Stores > Multimedia & Networking Devices & Products > Networking Products
• Miscellaneous Retail Stores, Nec > Telephone & Communication Equipment
• Electrical And Electronic Repair Shops, Nec > Electronic Equipment Repair, Except Computers > Telecommunications Equipment & Systems Repair