Hi everyone,
I'm currently troubleshooting a recurring issue with Zoom Phone/Poly IP phones where SIP calls are either delayed or dropped intermittently.

Details:

• Phones: Poly CCX 500 and Edge E300 models

• Call path: SIP calls via Zoom Phone

• Some calls go straight to voicemail or drop without audio

• Other times, there's a delay before the callee hears ringing

• My own test calls to the same numbers go through fine

• Problem seems intermittent and inconsistent

What I've Tried:

• Enabled logging on the phones (set to Debug)

• Captured traffic using SPAN on switch ports

• Collected packet captures on both sides (caller & callee)

• Noticed TLS sessions but traffic is encrypted (can't inspect payload)

• Confirmed phones are updated and network is stable

Ask: Has anyone run into this issue before? Any tips for:

• Decrypting or analyzing encrypted SIP/TLS traffic?

• Zoom Phone-specific call signaling insights?

• Additional logs or settings I should look into on Poly devices?

Happy to provide more details if needed — I’m just trying to figure out where the issue is happening (Zoom, network, or phones). Appreciate any guidance!

Hi I am desperately looking for alternatives to Skype to call from outside the USA into toll free numbers located in the USA - does Zoom have this feature? If yes, does Zoom regular account allow calls into toll free numbers? Or does only a Zoom business account allow these calls? Is it possible to call toll free numbers in other countries from outside those countries? What are the costs to call from outside the USA into toll free numbers located in the USA? If it is possible to make these calls, where are the instructions to do so? (I do not see anything on the Zoom website). Thanks.

hi, can anyone advise if I can call a 1-800 toll free number on zoom? I have Zoom workplace installed on my Mac but I can't see anywhere on the menu bar to place a call. I didn't need to call till now, but with skype being phased out, I would need to find an alternative to do so. Currently traveling in Europe and need to find a way to call different 1-800 numbers in North America. Thanks for suggestions/advice!

Our ATA Poly 400 is provisioned and registered with Zoom. I connected the ATA's phone port to the door box after provisioning. I press the button on the door box after connecting, but nothing happens. The receptionist should be able to hear it, but it's not. I believe that in order for the receptionist's phone to ring, the ATA must be set up for Ring Down.

Could someone please tell me how to set up the Ring feature on the receptionist's phone?

I received the SMS campaign decline notice, italicized text below. As you can see there's no explanation. Does anyone have any suggestions/ideas? I mean, I can't fix it if I don't know what is wrong with it. 

Your SMS campaign has not been provisioned because of the following reason, Upstream CNP declined sharing request for campaign C8YLDJF. Explanation: C8YLDJF.

The rest of the email are the links to Best Practices and other articles.

I have a Zoom Pro account and wanted to take advantage of the free trial Zoom Phone offer I recently got via email to see if this service is for me. I am a one-person consultancy, and need a single DIRECT phone line that doesn’t require a caller entering an extension to reach me. I can’t find  anything in your support articles that tells me how to do this. It seems your phone service is totally designed for companies requiring multiple lines with extension numbers to reach anyone. If there’s no way to do what I need (i.e. get my Zoom number to ring directly, without needing an extension), then this service obviously isn’t for me and I’ll need to discontinue the phone as part of my Zoom account. Please advise.

Zoom Phone users at my organization have repeating meetings every week (e.g., 1:00 - 2:00 p.m., every Monday), and they would like to silence incoming Zoom Phone calls during those times.

We use MS Outlook as our organizational standard, and it looks like the MS Office/Zoom plug-in only indicates that the person is in a meeting based on Outlook Calendar.. but does not put the phone on Do Not Disturb.

Is there a way to automatically set repeating Do Not Disturb times?

Thanks!