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Archive: No sound over VPN tunnel - General - Swyx Forum
https://www.swyxforum.com/topic/4124-archive-no-sound-over-vpn-tunnel/#:~:text=This%20problem%20is%20caused%20by%20TCP%20time-out%20on,there%20you%20will%20be%20able%20to%20have%20sound.
Archive: No sound over VPN tunnel - General - Swyx Forum
https://www.swyxforum.com/topic/4124-archive-no-sound-over-vpn-tunnel/
The following forum topic is restored from the Swyx Forum Archive (2007-2014) Quote 2007-08-24 14:36:55, petjez Hello, we use SonicWALL firewalls in our company. We use these devices also for site-to-site VPN. Between 2 of our sites i build a VPN and everything looks okay. I can reach windows sha...
The "Trunk Recording" Tab - help.swyx.com
https://help.swyx.com/11.25/Administration/Swyx/en-US/help/chap_serverconfiguration.08.17.html
No audio signal announces this permanent recording. If the Option Pack SwyxRecord is additionally installed, all users can record calls using a DTMF sequence. Currently excluded from permanent recording are trunks of type SwyxLink, which are managed remotely, and all SIP Gateway trunks.
How to resolve one-way or no-way audio on VoIP calls
http://info.teledynamics.com/blog/how-to-resolve-one-way-or-no-way-audio-on-voip-calls
SIP functions using TCP or UDP ports 5060 and 5061. So, a simple and intuitive solution would be to allow ports 5060 and 5061 to be port-forwarded internally. In the following diagram, the external voice endpoint is attempting to communicate with the internal IP phone.
Configuration of your Firewall / NAT ... - Swyx Help Center
https://service.swyx.net/hc/en-gb/articles/360000635009-Configuration-of-your-Firewall-NAT-Router-to-use-SwyxWare-SIP-Trunks-kb2988-
For the audio streams to the internet the Swyx LinkManager of SwyxWare v5.00 uses the ports 56000-57000, beginning from SwyxWare v5.01 the LinkManager uses the ports 55000-56000!. It's not possible to define a destination port, because we don't know what SIP client is used a the destination (e.g. X-Lite client).
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