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How to understand the phone numbers in an invitation?


I am new to this service, just trying my first meeting soon. I scheduled a meeting and then copied the invitation to send out by email. I had chosen the option of allowing both computer audio and phone use. I do not understand the listing of the phone numbers in the invite. In the One Tap option, there is a string of numbers and no explanation as to how they are to be used by the recipient. If I were to receive this, would be totally confusing.

Then following that is a listing of numbers, some of which mention cities. Again, how is this used? Any of these numbers can be dialed? Makes no difference? Or is the person supposed to know which one to use.

I am copying here the number list so you can see what I mean.

Thanks for any advice.


One tap mobile
+16699009128,,99011974097#,,,,*306811# US (San Jose)
+17193594580,,99011974097#,,,,*306811# US
Dial by your location
        +1 669 900 9128 US (San Jose)
        +1 719 359 4580 US
        +1 253 215 8782 US (Tacoma)
        +1 346 248 7799 US (Houston)
        +1 669 444 9171 US
        +1 646 931 3860 US
        +1 301 715 8592 US (Washington DC)
        +1 309 205 3325 US
        +1 312 626 6799 US (Chicago)
        +1 386 347 5053 US
        +1 564 217 2000 US
        +1 646 558 8656 US (New York)

Community Champion | Zoom Employee
Community Champion | Zoom Employee

Hi @drpitcairn 

These numbers are provided for those who need to connect to the meeting, but may not have enough of a data connection to utilize video and audio in Zoom, so instead they call in via phone for audio only. 


The one-tap mobile options make it easier to call a Zoom number and automatically enter the meeting's associated meeting ID, so the participant is connected to the correct meeting. 


The cities associated with some numbers are just to indicate where this number is based. This may be helpful for calling the most local number, or in the case of a bad phone connection, trying a number from a different region to attempt a better phone connection. 

These are often not necessary for most, but can be useful for those in areas with poor internet connections. 


Hope that helps and please make sure to mark the solution as accepted if this information is what you needed.

German numbers displayed will also work for persons dailing in from USA?

That reply is a question to Bort


Community Champion | Zoom Employee
Community Champion | Zoom Employee

Yes, but if they call the German number from the US, they will be charged for the international call. Its best to call with the most local number provided, to reduce costs of making the call. It doesn't matter which dial-in number is used, as the meeting ID provided to the system will direct their call to the correct meeting.