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Interactive Voice Response(IVR)

An automated phone menu callers steer by keypress or voice to serve themselves or reach the right team, often with an option to move to WhatsApp.

Also called: IVR system · Phone menu · Voice menu · Conversational IVR · IVR to WhatsApp deflection

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Call the helpline: where does each keypress lead?

Question 1 · up to 3

Welcome to the outage helpline. For Hindi, press 1. For English, press 2.

Your answers

None yet — pick an answer to start down the tree.

Path map

Depth 0 of up to 3. Circles are questions, squares are outcomes.

All possible outcomes (6)

  • Self-service: amount and due date read out

    The IVR reads the bill from the billing system and offers to send a payment link.

    Path: “1 · Hindi” → “2 · Bill”

  • Routed to the next free agent

    The caller's number and menu path appear on the agent's screen, so nobody repeats themselves.

    Path: “1 · Hindi” → “0 · Agent”

  • Known outage: restoration time played

    The area matches an open outage, so the IVR plays the estimated restoration time. No agent needed.

    Path: “1 · Hindi” → “1 · Power cut” → “1 · Whole area”

  • Routed to the fault desk

    A single-home fault needs a lineman, so the caller joins a skilled queue with the account details attached.

    Path: “1 · Hindi” → “1 · Power cut” → “2 · Only my home”

  • WhatsApp template sent, call ends

    Consent is recorded and a utility template with the complaint number goes to the caller. Their reply opens a 24-hour window for the chat.

    Path: “1 · Hindi” → “9 · WhatsApp” → “1 · Yes”

  • Caller keys in their WhatsApp number

    The IVR collects a ten-digit mobile number on the keypad, reads it back to confirm and sends the template there.

    Path: “1 · Hindi” → “9 · WhatsApp” → “2 · No, another phone”

An electricity outage helpline's IVR. Choose options as a caller would and watch each path end in self-service, an agent or a handoff to WhatsApp.

Question 1: Welcome to the outage helpline. For Hindi, press 1. For English, press 2. 2 options.

01What is interactive voice response (IVR)?

Interactive Voice Response (IVR) is the automated system that answers a phone line, plays recorded or synthesised prompts and acts on what the caller does: a keypress, sent as DTMF tones, or a spoken answer interpreted by speech recognition. It lets callers serve themselves (check a balance, track an order, report a power cut) or routes them to the right queue in a contact centre, often with CRM data attached so the agent knows who is calling and why.

Modern IVRs run in Cloud Telephony or a Contact Center as a Service (CCaaS) platform rather than on an office PBX, and connect to the phone network over the Session Initiation Protocol (SIP). A menu is a tree: a greeting, often a language choice in India, a few options, sub-menus, and leaves that either answer the caller, take an action through an API or hand over to an agent. Conversational IVRs replace the keypad menu with open prompts such as "Tell me what you're calling about", but they still route to the same end points.

IVR-to-WhatsApp deflection links the phone line to chat. The menu offers an option such as "Press 9 to get help on WhatsApp"; when the caller presses it, the system sends an approved WhatsApp template to the calling number, the call ends, and the conversation continues with a Chatbot or an agent. This differs from the WhatsApp Business Calling API, which carries voice calls over WhatsApp itself, and from a Missed Call Service, where the customer rings a number that hangs up and triggers a callback or message.

Key takeaways

  • An IVR is an automated phone menu that callers steer with keypresses (DTMF tones) or speech, to serve themselves or reach the right team.
  • Keep menus shallow: about four or five options per level and no more than two or three levels before an answer or a person.
  • IVR-to-WhatsApp deflection offers a keypress that sends the caller a WhatsApp message, so the query continues in chat.
  • A WhatsApp message sent from the IVR needs the caller's opt-in and an approved template, usually a utility template.
  • An IVR is the voice counterpart of a chatbot; DTMF is only the keypad signal it listens for.

02 · How it works, step by step

How does interactive voice response (IVR) work?

  1. Step 1

    Answer and identify

    The IVR answers, reads the caller ID and can look the number up in the CRM to personalise the greeting or skip steps for known customers.

  2. Step 2

    Offer language and options

    Play a short menu: the language choice first where callers need it, then four or five options with the most requested first.

  3. Step 3

    Collect the response

    Capture a DTMF keypress or a spoken answer, confirm it when the action matters, and reprompt once on silence or a wrong key.

  4. Step 4

    Resolve, route or deflect

    Answer from a back-end system, route to a skilled queue, or, for the WhatsApp option, call the Cloud API to send an approved template to the caller's number.

  5. Step 5

    Continue in chat

    When the customer replies to the template, a 24-hour customer service window opens and a bot or agent carries on in WhatsApp.

  6. Step 6

    Measure and prune

    Track the Containment Rate, abandonment at each menu node and the share of callers who pick WhatsApp, and cut options nobody uses.

03Example: A Bhopal power utility's outage line

During a storm, a Bhopal electricity distributor's helpline gets ten times its usual calls. Its IVR asks for Hindi or English, then offers: 1 to report a power cut, 2 for bills, 9 for updates on WhatsApp, 0 for an agent. Callers who report a cut in an area with a known outage hear the expected restoration time and hang up. Callers who press 9 hear "By pressing 9 you agree to receive updates about this complaint on WhatsApp" and get a utility template with their complaint number; when power returns, they get a WhatsApp update instead of calling again. Agents are left with the single-home faults that need a lineman.

04Why does interactive voice response (IVR) matter?

Phone queues are the most expensive way to answer simple questions, and long, confusing menus are the most common complaint about them. A well-designed IVR resolves routine requests without an agent and sends the rest to the right queue the first time. Adding a WhatsApp option goes further: anything that needs a link, a document, a photo or a payment is easier in chat, agents can work several chats at once and the conversation leaves a written record. The call queue shrinks, and the Deflection Rate becomes a number you can manage.

05Interactive voice response (IVR) in code

// Called by your IVR platform when the caller presses 9.
// The request and response shapes depend on your telephony provider.
app.post("/ivr/whatsapp-handoff", async (req, res) => {
  const phone = toE164(req.body.caller_id);              // e.g. "+919812345678"
  if (!phone || !isMobile(phone)) {
    return res.json({ say: "Sorry, we can't message this number. Please hold for an agent.", next: "agent" });
  }
 
  // Keep proof of the opt-in: who, when, and exactly what the prompt said.
  await optIns.record({ phone, channel: "whatsapp", source: "ivr", prompt: "press-9-v2", at: new Date() });
 
  await fetch(`https://graph.facebook.com/v26.0/${PHONE_NUMBER_ID}/messages`, {
    method: "POST",
    headers: { Authorization: `Bearer ${ACCESS_TOKEN}`, "Content-Type": "application/json" },
    body: JSON.stringify({
      messaging_product: "whatsapp",
      to: phone.slice(1),
      type: "template",
      template: {
        name: "outage_complaint_update",                 // an approved utility template
        language: { code: "hi" },
        components: [{ type: "body", parameters: [{ type: "text", text: req.body.complaint_id }] }],
      },
    }),
  });
 
  res.json({ say: "We have sent you a WhatsApp message. You can hang up and reply there.", next: "hangup" });
});

Record the opt-in before sending, and fall back to an agent when the caller ID is a landline or withheld.

06 · Common mistakes, and the fix

Common mistakes with interactive voice response (IVR)

  • Menus that bury the human

    Callers who can't find an agent abandon or press 0 repeatedly. Offer "speak to an agent" clearly, and never loop a caller back to the main menu more than once.

  • Sending WhatsApp without a real opt-in

    A keypress counts as consent only if the prompt said what the caller will receive on WhatsApp. Record the prompt version, time and number, and send a utility template tied to the call's purpose.

  • Assuming the caller ID is a WhatsApp number

    Calls come from landlines, withheld numbers and office lines. Check the number is a mobile in E.164 format, and offer to key in another number or stay on the line if it isn't.

  • Deflecting what chat can't solve

    Pushing an emergency or a complex complaint to WhatsApp just moves the frustration. Offer chat for tasks that work better in writing: links, documents, status updates.

  • Never pruning the tree

    Menus grow with every campaign. Review abandonment per node every month and remove options few callers choose.

07 · Tips from the bench

Best practices for interactive voice response (IVR)

  • Say the action before the key: "To report a power cut, press 1", not "Press 1 for power cuts".
  • Offer the WhatsApp option early in the menu, not as the last item.
  • Keep each prompt short and record it in every language you support.
  • Pass the call's context, such as a complaint number, into the template so the chat starts where the call ended.

08Interactive voice response (IVR): key facts and limits

Caller input
DTMF keypresses or speech
DTMF tones
697–941 Hz row tone plus 1209–1477 Hz column tone
Menu rule of thumb
4–5 options per level, 2–3 levels deep
Runs on
Cloud telephony or CCaaS, connected over SIP
WhatsApp handoff
Approved template to the caller's number, after opt-in
Template price in India
Utility at ₹0.19 per delivered message
After the customer replies
A 24-hour customer service window opens

09IVR FAQs

What is the difference between an IVR and a chatbot?+
Both automate first-line customer contact. An IVR works over a phone call with keypresses or speech; a chatbot works in a messaging channel with text, buttons and media. Many businesses connect the two by handing callers from the IVR to a WhatsApp chatbot.
How does IVR to WhatsApp deflection work?+
The IVR offers an option such as "press 9 for WhatsApp". When the caller presses it, the system records consent and sends an approved WhatsApp template to the caller's number; the customer's reply opens a 24-hour service window for the chat to continue.
Does sending a WhatsApp message from an IVR cost money?+
Yes. The template the IVR sends is a business-initiated message charged by its category, typically utility at ₹0.19 in India, and the business's replies inside the window have been charged as service messages at ₹0.145 since 1 October 2026.
How many options should an IVR menu have?+
About four or five per level, with no more than two or three levels. Callers remember little of a long list, so put the most common requests first and make the agent and WhatsApp options easy to find.

See InfiQ pricing

* Per-message rates for India, ex-GST: marketing, utility and authentication effective 1 July 2026; service messages ₹0.145 since 1 October 2026 (they were ₹0 until 30 September 2026). Volume commitments earn discounts — final rate is confirmed on your account; applicable GST extra. Rates for other countries differ (see the international rate table on /pricing).

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