A traditional IVR asks callers to “press 1 for sales, press 2 for support” and hopes the menu matches what they want. A conversational IVR lets the caller simply say what they need, in their own words and their own language, and routes or answers the call from there. This guide explains how a conversational IVR differs from a keypad (DTMF) IVR, where each one fits, and how to add speech to the phone system you already run without throwing away the menus that work.
What is a conversational IVR?
A conversational IVR is a phone menu that understands speech instead of only keypad presses. The caller hears a short greeting such as “Tell me in a few words how we can help”, says “I want to change my delivery address”, and the system works out the intent and acts on it: it routes the call to the right queue, answers a simple question, or collects details before passing the caller to a person.
Under the hood it is an AI voice agent placed at the front of your call flow. Speech to text turns the caller’s words into text, a language model works out what they want, and text to speech replies. If you want the technical detail, see how AI voice agents work.
Conversational IVR vs DTMF IVR
| Factor | DTMF (keypad) IVR | Conversational IVR |
|---|---|---|
| How callers choose | Press a number | Say what they need |
| Menu depth | Grows into nested menus as options are added | One open question, then follow-ups |
| Wrong choices | Common when options are vague | Fewer, if intents are well defined |
| Languages | One recorded menu per language, chosen by key press | Can understand and reply in many Indian languages |
| Collecting details | Only digits (account numbers, PIN, dates) | Names, reasons, addresses and digits |
| Noisy lines, strong accents | Not affected | Accuracy can drop, needs a keypad fallback |
| Cost and setup | Low, recordings and routing only | Speech and AI usage per minute, plus design and testing |
| Predictability | Fully predictable | Needs guardrails and testing |
A keypad IVR is not outdated. For a short menu with three or four clear options it is fast, cheap and never misunderstands anyone. A conversational IVR earns its place when menus have grown too long, when callers often pick the wrong option, or when you serve callers in many languages. See IVR call flow design for keeping keypad menus short and clear.
When a conversational IVR makes sense
- Long or nested menus: if callers must go three levels deep to reach the right team, one spoken question is quicker.
- Many call reasons: banks, hospitals, logistics and service centres often have dozens of call types that do not fit a keypad.
- Many languages: a caller in Tamil Nadu or Assam can speak naturally instead of waiting for “press 9 for more languages”.
- Simple questions you can answer on the call: opening hours, documents needed, order or appointment status, when the AI can look them up.
- Details you want before an agent picks up: name, reason for calling and reference numbers, so the agent does not start from zero.
It makes less sense for very small call volumes, for a single team that answers everything, or where callers expect to reach a person straight away.
How BitVoice builds a conversational IVR
BitVoice builds conversational IVRs on its own AI stack: the VEXYL Voice Gateway handles the call audio and LiteBot is the AI brain.
- Connects to your phone system: VEXYL connects to the Voxdial IP PBX as a SIP trunk peer or a registered extension, so your existing IVR, queues and DIDs stay in place. It can also connect through a SIP trunk or to other IP PBXs.
- Indian languages: speech recognition through Sarvam covers 22 Indian languages, and the agent can follow when a caller switches language mid-call.
- Barge-in: callers can interrupt the greeting, as they would with a person.
- Transfer to a human: the AI transfers the call to your agents when the caller asks for a person or the request is outside its scope.
- Knowledge and tools: LiteBot can search a knowledge base and call your systems through tools (HTTP or CRM calls) to check a status or book a slot.
- Every turn logged: each call keeps a transcript with tool results, so you can see what callers asked and where the IVR got it wrong.
Keep the keypad as a fallback
The safest design mixes both. A good pattern for an Indian business:
- Greeting with a choice: “Tell me briefly what you need, or press 0 for the menu.”
- Spoken intent first: the AI identifies the reason and confirms it in one line.
- Keypad fallback: if speech fails twice, or the line is noisy, offer the short keypad menu.
- Fast route to people: callers who say “agent” or “person” go straight to the queue.
- Human first during working hours: the conversational layer sorts the call, but your contact centre agents take it whenever they are free.
Designing the intents
Most of the work is not technical. It is deciding what callers actually ask for.
- Start from real calls: list the top 15 to 20 call reasons from your recordings and dispositions.
- Group them into intents: “where is my order”, “change address” and “cancel order” may each go to a different team.
- Write the confirmation lines: “You want to change your delivery address, is that right?” catches mistakes early.
- Decide the action per intent: answer, collect details and transfer, or transfer straight away.
- Test with real voices: different accents, background noise, mixed Hindi and English, and callers who say three things at once.
- Review transcripts weekly: add new phrasings and fix intents that keep failing.
Common mistakes
- Replacing the whole menu at once. Start with one queue or one line and expand.
- No way out. A caller who cannot reach a person will hang up and call back angrier.
- Open-ended answers on sensitive topics. Keep money, medical and legal answers out of scope and send those calls to people.
- Ignoring the first week of data. Early transcripts show exactly where callers get stuck.
Want to add speech to your existing IVR without losing what works? Talk to BitVoice about a pilot on one line.
FAQs
What is the difference between a conversational IVR and a normal IVR?
A normal IVR asks callers to press keys for menu options. A conversational IVR lets them say what they need, understands the request and routes or answers the call.
Can a conversational IVR understand Indian languages?
Yes. The BitVoice AI voice agent uses speech recognition that covers 22 Indian languages and can follow a caller who switches language during the call.
Do I need to replace my IVR to add speech?
No. BitVoice connects its voice gateway to the Voxdial IP PBX as a SIP trunk peer or extension, so you can add a conversational layer to one line while keeping your keypad menus.
What happens if the AI does not understand the caller?
A good design offers the keypad menu after one or two failed attempts and lets the caller ask for a person at any time.
