Final answer:
When using a multimeter to test for dial tone on a POTS line with the phone on the hook, the technician should expect to see a reading of 48 to 50 volts AC.
Step-by-step explanation:
When using a multimeter to test for dial tone on a POTS line with the phone on the hook, the technician should expect to see a reading of 48 to 50 volts AC.
This voltage is typically provided by the telephone exchange to ensure a stable connection for the phone line. The multimeter measures the voltage by connecting the positive lead to the telephone line and the negative lead to a ground reference.