ERROR - Registration failed

[frankzangh]

Hi,
I'm trying to register my sip account (sip.freevoipdeal.com) with my credential. This are working from different app and also by using pyVoIP. I do receive the following output if I do run the test script (I added debug logging):

python3 test.py
DEBUG:asyncio:Using selector: EpollSelector
2024-12-31 11:49:45,352 - PySIP.utils.logger - INFO - Detecting connection type (UDP/TCP/TLS). This might take some time...
INFO:PySIP.utils.logger:Detecting connection type (UDP/TCP/TLS). This might take some time...
DEBUG:urllib3.connectionpool:Starting new HTTPS connection (1): api64.ipify.org: 443
DEBUG:urllib3.connectionpool:https://api64.ipify.org:443 "GET /?format=json HTTP /1.1" 200 29
DEBUG:PySIP.utils.logger:Successful UDP connection has been made.
2024-12-31 11:49:49,826 - PySIP.utils.logger - WARNING - Attempt 1 for REGISTER_7B005701-00E4-46C5-BFAB-E928695FEDE7_206 timed out. Retrying in 0.53 seconds...
WARNING:PySIP.utils.logger:Attempt 1 for REGISTER_7B005701-00E4-46C5-BFAB-E928695FEDE7_206 timed out. Retrying in 0.53 seconds...
2024-12-31 11:49:54,359 - PySIP.utils.logger - WARNING - Attempt 2 for REGISTER_7B005701-00E4-46C5-BFAB-E928695FEDE7_206 timed out. Retrying in 1.02 seconds...
WARNING:PySIP.utils.logger:Attempt 2 for REGISTER_7B005701-00E4-46C5-BFAB-E928695FEDE7_206 timed out. Retrying in 1.02 seconds...
2024-12-31 11:49:59,384 - PySIP.utils.logger - ERROR - Registration failed for frankxxx: Operation REGISTER_7B005701-00E4-46C5-BFAB-E928695FEDE7_206 failed: Operation REGISTER_7B005701-00E4-46C5-BFAB-E928695FEDE7_206 timed out after 3 attempts
ERROR:PySIP.utils.logger:Registration failed for frankxxx: Operation REGISTER_7B005701-00E4-46C5-BFAB-E928695FEDE7_206 failed: Operation REGISTER_7B005701-00E4-46C5-BFAB-E928695FEDE7_206 timed out after 3 attempts
DEBUG:PySIP.utils.logger:Error during connection: [Errno 110] Connect call failed ('77.72.174.128', 5060)

I tried this on two different servers (one I build from stretch).
Any idea to make this working?

Many thanks in advance.
Frank