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- Sep 2, 2025
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I've had several companies report back to me that paging has been problematic or non-functional since their upgrades from V18 to V20.
It appears the only companies that have complained have been companies that had a different dial code for paging than *8.
I've attempted at these companies to reset the dial codes back to *8 to reset this logic, per this thread:
But even after search the PBX's for quite some time for additional dial codes- I cannot find what is using *8 and making me unable to reset this dial code.

Has V20 of 3cx moved any additional dial codes outside of this menu?
Thanks in advance for your suggestions- again we've had this issue on several self hosted PBXs, all of which were upgraded from V18 and all of which did NOT have *8 set as the paging dial code prior to the upgrade.
It appears the only companies that have complained have been companies that had a different dial code for paging than *8.
I've attempted at these companies to reset the dial codes back to *8 to reset this logic, per this thread:
Hello,
We recently upgraded to v20 and it appears to have impacted our paging ring groups. Existing and new paging ring groups terminate the call within 1 second, but calling the phones directly work fine. Any advice on debugging?
Thanks!
We recently upgraded to v20 and it appears to have impacted our paging ring groups. Existing and new paging ring groups terminate the call within 1 second, but calling the phones directly work fine. Any advice on debugging?
Thanks!
- UAC
- Replies: 14
- Forum: Phone System / PBX
But even after search the PBX's for quite some time for additional dial codes- I cannot find what is using *8 and making me unable to reset this dial code.

Has V20 of 3cx moved any additional dial codes outside of this menu?
Thanks in advance for your suggestions- again we've had this issue on several self hosted PBXs, all of which were upgraded from V18 and all of which did NOT have *8 set as the paging dial code prior to the upgrade.
