How to switch from an answering service to an AI voice agent without missing calls
Moving off an answering service feels risky because calls are your revenue. The safe way is to never flip a switch: run the AI voice agent next to the service, compare, then shift calls in steps.
Stage 1. Audit what the service actually does for you
Pull the last few weeks of messages your service took. Sort them by type: new inquiries, existing customers, urgent issues, wrong numbers, sales calls. Note what the operators ask every time and what they do with an emergency. That list is the spec for your agent. If the service has special rules, such as "always page the on-call tech for a burst pipe", write them down now, because they are easy to forget.
Stage 2. Build the agent from that list
Create the flow in the visual builder around the call types you found. Put the answers operators give most often into the knowledge base. Add the handoff rules from Stage 1 as explicit branches. Then call the agent yourself with the ugly cases: a caller who rambles, one who is angry, one who asks something it should not answer.
Stage 3. Run both in parallel
Give the AI agent a separate local number and share it with a few friendly customers, or use it on a line that is only busy at certain times. Keep the answering service on your main line. After a week, compare message quality. Did the agent capture name, number and reason every time? Did it send the urgent ones where they should go? Fix gaps before moving any real volume.
Stage 4. Shift calls in steps
Start with the hours your service handles worst, usually nights or weekends. Move that window to the agent, keep the service on the rest. Review transcripts daily at first. When those hours look clean, move the next window. Keep the service contract until you are sure; check its cancellation terms before you plan the final date.
Mistakes to avoid
- Cancelling the service before the first full week of clean transcripts.
- Forwarding the whole line on day one, so any gap hits every caller.
- Skipping the urgent-call branch because "it rarely happens".
- Forgetting to tell your team where messages now land.
What it costs to test
InfiVoice bills in credits, and 1 credit equals 60 seconds of call time. The Free plan includes 100 credits, enough to build and test the parallel run. Pro is $79 per month with 250 credits.
Frequently asked questions
How do I forward my existing number to the AI agent?
That depends on your phone provider. Ask them about call forwarding or number porting, and keep the old setup until the test calls pass.
Will callers notice the change?
Tell your team and write the greeting the way your business already answers. Check the transcripts to see how callers react.
Can a person still take certain calls?
Yes. You design the flow, so you decide which calls go to a human.
What if I want to go back?
During the stepped cutover your service is still active, so you can move a window back at any time.
Related
- /blog/ai-receptionist-vs-answering-service-vs-human-receptionist
- /blog/how-to-set-up-an-ai-receptionist
- /pricing