Ten testing functions include:

• TDR—find cable length measurement and locate faults on virtually all types of cable including twisted pair, coaxial, and parallel conductors.
• Toner—five separate tones for fast and easy differentiation between multiple wire pairs
• SmartTone®—short the correct pair and tone changes for exact pair identification
• Data indication—warns when data is present on the line
• Voltage indication/measurement—identifies potential line problems
• Current (mA) indication/measurement—verifies sufficient line current
• Caller-ID with Call Waiting CID—verifies functional service
• DTMF Digit Grabbing—isolates faulty customer premise equipment
• Detects dial tone, places and receives calls
• Polarity