Failed to establish connection to 3cx phone system web api

[ummara]

On start of 3cx phone, it gives,"failed to establish connection to 3cx phone system web api"
and contacts and status in "presence " are not available.
I configured spilt dns and have done configuration of external and internal FQDN.

 

[NickD_3CX]

Check out this thread, I think the problem might be very similar:

http://www.3cx.com/forums/viewtopic.php?f=34&t=43819

 

[aktivtrans.cz]

HEllo, I have same issue. Failed to establish connection to 3cx phone system web api.

Your thread was helped...

this..

Postby oakley » Mon Jan 18, 2016 10:26 am

I found that the system settings can be changed in the server manager in troubleshooting/parameters. I changed all the external parameters to the correct external ip and opened ports 5000 and 5001 on the firewall. I then sent the welcome emails again and all the devices are now working!
Thanks for your help as looking thru the welcome email in a text editor showed where the issue was

 

[ummara]

Thanx.Problem solved by sending the welcome mail