An auto attendant is a system that automatically answers incoming calls and guides callers with recorded voice prompts. A typical greeting is "Thank you for calling. Press 1 for Sales, 2 for Support." It automates call handling without a dedicated receptionist.
Auto attendants are often confused with IVR (Interactive Voice Response), but there is a clear distinction. An auto attendant is a simple system focused on call routing, transferring callers to the appropriate extension or department based on their input. IVR, on the other hand, includes complex interactive processing such as database lookups, balance inquiries, appointment booking, and payment processing. An auto attendant can be thought of as the simplest subset of IVR functionality.
Auto attendants are especially effective for small and medium businesses and startups. Compared to the cost of hiring a dedicated receptionist (3-4 million yen annually), auto attendant features included in cloud PBX services are available from just a few thousand yen per month. After-hours handling can also be automated with time-based greetings like "Our office is currently closed. Business hours are weekdays 9 AM to 6 PM." Incorporating automated answers to common inquiries (business hours, location, fax number) further reduces operator workload.
A key design principle is to limit menu options to four or fewer and place the most frequently contacted department as the first option. Always include a "connect to an operator" option (typically 0) as an escape route for callers who get lost in the menu. Professional narration for the voice guidance enhances corporate credibility, though cloud PBX text-to-speech features are also practical for cost-conscious setups. See Business Phone Number Guide for implementation tips.