Issue with Zoom Phone Smart Embed: Not receiving `zp-call-ringing-event`

Phone Phone Smart Embed
1

Current Situation:
We have integrated Zoom Phone Smart Embed into our product . Since March 16, 2026, we have been experiencing the following issues. Because this occurred simultaneously across multiple tenants without any code changes on our end, we suspect a silent update or specification change on the Zoom platform.

Issue 1: `callerId` suddenly became mandatory in `zp-make-call` (Mitigated)
Previously optional, omitting `callerId` now results in a “No available callerId” error inside the iframe, preventing calls. We mitigated this by explicitly passing `callerId` and `autoDial: true`, which allows the call to be placed.

issue 2: `zp-call-ringing-event` is not received (Unresolved)
Even though the call itself successfully connects via `zp-make-call`, NO call events (including `zp-call-ringing-event` and others) are received via `window.addEventListener(‘message’, …)`.

Simplified Implementation Code:


// Making a call
document.querySelector('iframe#zoom-embeddable-phone-iframe')
  .contentWindow.postMessage({
    type: 'zp-make-call',
    data: { number: '08012345678', callerId: '999', autoDial: true }
  }, '[https://applications.zoom.us](https://applications.zoom.us)');

// Receiving events (Not triggering)
window.addEventListener('message', (e) => {
  console.log(e.data.type); // Nothing is received
});

Environment Info:

  • Zoom Workplace (Desktop App): Version 6.7.7 (Updated to the latest)

  • Browser: Chrome (Latest)

  • iframe src: Google Search

  • Zoom Account Setting: “Automatically call from third-party apps” is Enabled (ON)

  • Admin-managed app

Questions / Requests:

  1. Were there any specification changes or updates around March 16, 2026, regarding event dispatching for Zoom Phone Smart Embed (specifically when using zp-make-call)?

  2. Can we still receive events like zp-call-ringing-event / zp-call-connected-event / zp-call-ended-event when placing a call via zp-make-call? Are there any new conditions or restrictions to receive them?

  3. When did the callerId parameter become mandatory? The official documentation still states it is “optional”, but omitting it now causes an error.

  4. What is the recommended way to retrieve the Call ID for click-to-dial if events are not being received via postMessage? We are currently considering polling the Zoom Phone REST API as a fallback, but would prefer the event-driven approach.

1 Like
2

Hi @aratakomiya
Thanks for reaching out to us.
We are investigating this issue. I will report back when I have an update

3 Likes
3

any ideas when we can expect an update?

1 Like
4

Hi @zachary1
We are waiting on a fix for this, I will update you as soon as this is fixed and please know I am pushing for this to be fixed ASAP

1 Like
5

Hi @elisa.zoom,

Thank you for the quick update and for pushing this forward!
We are very glad to hear that a fix is on the way. Please keep us posted as soon as it goes live.

We appreciate your help with this!

6

hi @aratakomiya
I believe this issue has been fixed. Can you please test on your end and confirm?

1 Like
7

Hi @elisa.zoom

My team is also using the Zoom Phone Smart Embed in our application.

Since 16 March 2026, we are experiencing the following similar issue:

  • Zoom Phone does not automatically fill the phone number into its keypad, even though our app passes the phone number into the zp-make-call message. We are also not seeing the phone auto-dial. The Zoom phone just loads with an empty keypad.

The Smart Embed docs state that the Zoom phone will auto-dial by default.

Has there been any change to this behaviour?

Do we need to pass autodial: false into the zp-make-call message, in order for the number to be filled automatically?

8

Hi @AnubhavV

Thanks for reaching out to us.
Was this working before for you? is this issue related with the outage we had?

9

Yes, prior to 16 March, the Zoom Phone was automatically filling in the passed phone number into its keypad.

I have posted more details about my issue here: devforum.zoom. us /t/zoom-phone-smart-embed-does-not-auto-dial-and-does-not-fill-phone-number-into-keypad/142508

Which outage are you referring to?

10

@AnubhavV
There was an outage early this week where the zp-call-ringing-event was not being triggered
But it has been resolved since then