Log in to your Telnyx Mission Control account and click on the NUMBERS on the top left side of the page.

Click on the MY NUMBERS tab.

Select the numbers by selecting checkboxes in front of the numbers you'd like to edit.

You can also select all the numbers displayed on the page by using the checkbox above the top number (highlighted in red).

Note - You can expand the selection by increasing the Row count of the displayed page ranging from 10-100 numbers displayed on the page.

Once you have selected your desired numbers, click on the Bulk Actions dropdown and select edit voice settings.

A new window will pop up with the heading Bulk Edit Voice Settings.

Here you should be able to preview all the selected numbers to which the changes will be applied.

Under Bulk Edit Voice Settings you will see multiple tabs and we will go through them one by one.

Below the list of the numbers where these changes will be applied, you'll find a dropdown menu with the options that you changed in bulk. You'll find "Routing/Billing", "HD Voice Feature", "CNAM", "Forwarding", "Recording", "Voicemail", and "Expert Config."

In the Routing/Billing section, there are 3 selections:

This area provides a drop-down showcasing all your created SIP Trunk Connections. You should be able to select your connection and your selection will be applied to all the selected numbers once saved. You can also bulk-remove any SIP connection from selected numbers by selecting No Connection in the drop-down and saving the settings.
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You can associate/de-associate bulk numbers to a particular billing profile. To know more about the billing profile, visit here.

You can associate/de-associate bulk numbers to either Channel Billing or Pay-per-minute Billing which follow regular billing increments.

In this section, there are 2 CNAM selections

You can enable/disable CNAM listing for multiple selected numbers here. You can get more information about CNAM here

You can enable/disable caller id lookup for all inbound calls associated with the multiple selected numbers. You can get more information about Caller ID here

You can set a call forwarding to your selected numbers here. Once the Phone Number is set up and the forward option is selected (On-Failure/Always) then all the inbound calls coming to selected numbers will be forwarded accordingly.

You can learn more about call forwarding here.

You can set a call recording to your selected numbers here. Once the Phone Number is set up and the forward option is selected (On-Failure/Always) then all the inbound calls coming to selected numbers will be forwarded accordingly.

You can learn more about call recording here.

To enable the voice mail option on multiple selected numbers, just toggle the voice mail button to enable and enter the pin as shown in the screenshot.

You can learn more about Voice Mail here.

You can enable Translated Number, Tech Prefix, T.38FAX gateway, Accept any RTP Packets, and RTP Auto Adjust settings on multiple selected numbers in this section.

You can learn more about these expert configurations here.