Hello,
I am having issues with my 9.1 up to date UTM regarding SIP connections.
I have a siemens Gigaset C470 IP phone that I want to connect to 2 different SIP providers.
My ISP doesn't require STUN while the other does.
I opened all the needed ports as per both providers documentation, tried to enable/disable the voip parameters in network security without any change:
The registration sometimes works, sometimes not, may for a while after rebooting, or after waiting a fairly long amount of time. [:S]
It failed yesterday evening, was fine this morning and fell again theis afternoon, for example
I checked the firewall and IPS logs and nothing is showing up there...
Does anyone have a suggestion?
I'm particularly surprised it does not behave the same way each and any time I reboot or unplug/replug the phone
Any help will be appreciated
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