An auto-attendant is an automated system that answers calls with a prerecorded message and directs them to the appropriate extension.
Direct Inward Dialing (DID) is a telecommunications service that allows multiple phone numbers to route to a single or group of phone lines, enhancing call management efficiency and flexibility.
Signaling System No. 7 (SS7) is a suite of telecommunication protocols that are critical in setting up and managing telephone calls across modern networks, playing a crucial role in mobile and landline communications.
