3CX mobile app not registering

[Muhammad Tahir]

Dear team,

I am having issues with 3CX mobile app connecting via office internet. when connecting app via office internet, it fails to connect (refer to screenshot) saying 'Registration failed, Service unavailable), but if I then switch my phone to 3G or use my home internet, the app start working fine which implies that there is some configuration issue on the router. Would someone be kind enough to assist. Thank you in advance

I am referring to this document to configure my office internet router
https://www.3cx.com/docs/manual/firewall-router-configuration/


my router is Hitron CGNV4-BIZ (by virgin media), here is the port config page

 

[Saqqara]

Need more info

Where is you 3CX machine located - in the cloud, or internal network (office network)

If in the cloud, disable all the port triggering rules as these are not required. You need to look at Service Filtering or firewall settings - https://www.upc.ro/pdf/manuale/internet/HITRON_CGNV4_UG_V1-1_DRAFT_2014-01-28.pdf

Maybe worth temporary the firewall to see if works, if it does then you need to setup outgoing the following outgoing ports in https://www.3cx.com/docs/3cx-phone-system-v14-ports/

Main one being the 3CX tunnel 5090 for 3CX application

 

[Muhammad Tahir]

Thank you sooo much for sharing the PDF, I found that in the security, some "£$"£$"! added Service Filter for the same ports I needed, hence blocking. But you put me in the right direction, RTFM