Category

• TELEPHONES EQUIP & SYSTEMS
• TELEPHONE EQUIP & SERVICE NEC
• TELEPHONE EQUIP & SERVICE NORTHERN TELE CO/NORTEL
• TELEPHONE EQUIP & SERVICE TOSHIBA

Category

• TELEPHONES COMMUNICATIONS SERVICES
• TELEPHONE EQUIP & SERVICE MITEL
• TELEPHONE EQUIP & SERVICE NEC
• TELEPHONE EQUIP & SERVICE PBX

Category

• LONG DISTANCE TELEPHONE COMPANIES & SVC
• TELEPHONES COMMUNICATIONS SERVICES
• TELEPHONES EQUIP & SYSTEMS SUPLS & PARTS
• TELEPHONE EQUIP & SERVICE NEC

Category

• LONG DISTANCE TELEPHONE COMPANIES & SVC
• TELEPHONES COMMUNICATIONS SERVICES
• TELEPHONES EQUIP & SYSTEMS
• TELEPHONE EQUIP & SERVICE NEC