Port  | Destination  | Comments  | 
|---|---|---|
443  | https://zebra-licensing.flexnetoperations.com  | License registration and validation for Zebra Voice.
                 Available in Zebra Voice versions earlier than 9.0.20306.  | 
5060  | Call Manager server(s)  | SIP messaging to Call Manager. Change the device configuration and PBX- Call Manager to use a different port.  | 
69  | TFTP server(s)  | TFTP services download.  | 
51000 – 51025  | RTP Traffic to other devices  | To use a different port, change the device configuration.  | 
80  | WebServer  | HTTP, HTTPS, or TFTP file download of the Zebra Voice Configuration file and the contacts list CSV file, if available.  | 
8443  |  https://wfc-provisioning1.pttpro.zebra.com/admin/login  | License registration for Zebra Voice versions 9.020306 and later.  | 
443  | https://wfc-provisioning1.pttpro.zebra.com/admin/login  | For customers who use the Extension Manager. To download profile and license information.  |