Add an MP3 to a Phone Call
Add an MP3 to a Phone Call, built on a proven open-source foundation and adapted to how your business already works.
This is the outcome, not a promise of one
A worked example of exactly what this build does once it is live in your business.
- 19:41Message in, after hours: “do you do emergency callouts?”
- 19:41Matched against the questions you actually get asked.
- 19:41Answered instantly, in your wording, with the callout fee.
- 19:43Follow-up is outside what it is allowed to answer.
- 19:43Escalated to a human with the whole thread attached.
Outcomes
- Every call answered, routed or captured as a voicemail with a text follow-up
- After-hours coverage without paying for after-hours staff
- Call recordings and transcripts attached to the right customer
Capture and follow-up
The content of an interaction is captured, stored against the customer, and turned into a follow-up action instead of an audio file nobody opens.
- Announce the recording and capture consent
- Transcribe so the content is searchable
- Attach the artefact to the customer record automatically
- Set retention and deletion, then actually enforce it
Four things that are true of every build
The terms are the same whether you spend two thousand dollars with us or twenty.
A fixed price
Quoted before we start, naming what it does and what it will not do. It does not move unless you change the scope in writing.
Proof before launch
You sign off on real output from your own cases, not a demo video. If it does not convince you, it does not go live.
Everything in your name
Accounts, numbers, data, repository. Nothing switches off if you stop working with us, and there is no migration to negotiate.
30 days of fixes free
Anything that does not behave the way we said it would gets fixed at our cost for the first 30 days, whether or not you take the managed plan.
What is in the box
The whole build, on one page. No line item appears later that is not here.
| Product line | Voice & call flows |
|---|---|
| Implementation pattern | Capture and follow-up |
| Best fit | trades, property managers, clinics and any business where the phone is the front door |
| Runtimes available | dotnet |
| Foundation | Open-source reference implementation, maintained by Twilio itself, which is the strongest signal a sample will still work next year — dotnet |
| Platform services | Twilio Programmable Voice with TwiML call flows, a small web service for the routing logic, and your existing numbers ported or forwarded. |
| Typical build | About one week to a staging number, then live monitoring before sign-off |
| Build price | ~$2,500 fixed scope |
| Run price | ~$390/mo managed, platform usage billed at cost |
| Compliance handled | Consent capture, sender identification, automatic opt-out, logging and retention |
Related builds
Same pattern or same product line.
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The content of an interaction is captured, stored against the customer, and turned into a follow-up action...
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AI Phone Agent with Twilio Conversation Relay
A speech pipeline sits on the call: audio in, transcription, a language model deciding what to say, speech back...
Get this built for your business
Fixed-price scope, about a week to a working staging number, and we run it afterwards if you want.