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How to troubleshoot common VoIP issues? | SonicWall
https://www.sonicwall.com/support/knowledge-base/how-to-troubleshoot-common-voip-issues/170503552140480/#:~:text=Issue%20-%20One%20Way%20Audio%20or%20No%20Audio,in%20most%20deployments.%20Consult%20with%20your%20VoIP%20vendor.
No audio on incoming VoIP - Spiceworks
https://community.spiceworks.com/topic/2106218-no-audio-on-incoming-voip
HP 2510-48g switches, Sonicwall NSA 240; not sure about the VoIP system - another company handles it. Users at one of our sites reported that the incoming calls do not have audio. They hear the phone ring, but when they pick, it's silent on other end. The phone tech came by, ran bunch of tests with wireshark and whatever else, and it looked like he couldn't …
Solved: VoIP SonicWall Samsung OfficeServ - No Audio …
https://www.experts-exchange.com/questions/27710608/VoIP-SonicWall-Samsung-OfficeServ-No-Audio-on-remote-phones.html
VoIP SonicWall Samsung OfficeServ - No Audio on remote phones. I've got a Samsung SMT-i520 VoIP Phone which is trying to connect to a Samsung OfficeServ 7200, which is behind a SonicWall TZ-210. The phone works fine internally, but as soon as you take it externally and it has to go through the SonicWall, I lose all audio (it still connects fine and dials …
Using a Sonicwall with VoIP - voipmechanic.com
https://www.voipmechanic.com/sonicwall-voip.htm
The SonicWall does provide a "Consistent NAT" option to help resolve this issue, but this does not correct the fact that port numbers are actually changed. Changing outbound port numbers will cause issues with the VoIP traffic. These issues can result in one-way audio and dropped calls. Some background about the SonicWall
Solved: SIP no audio - Asterisk [SonicWall TZ-190] < ...
https://www.experts-exchange.com/questions/24093308/SIP-no-audio-Asterisk-SonicWall-TZ-190-SonicWall-TZ-150-SIP-Devices.html
SIP no audio - Asterisk [SonicWall TZ-190] <-> [SonicWall TZ-150] <-> SIP Devices. cybertechcafe asked on 1/28/2009. Voice Over IP IP Telephony. 7 Comments 1 Solution 4003 Views Last Modified: 12/21/2013. I have an Asterisk v1.4.22 PBX on a LAN, protected by a SonicWall TZ-190 in Building 1. The PBX registers to an upstream SIP provider for ...
One way audio with VOIP - Spiceworks
https://community.spiceworks.com/topic/1836961-one-way-audio-with-voip
My guess is the sonicwall is cutting off one one of the voice ports. VIP works like this... Control port 5060, then audio por5060,and audio port out. You are losing one of the two audio ports mid call or its not setting up or blocked.
Recommended Settings on a Sonicwall for Digital Voice ...
https://support.itel.com/hc/en-us/articles/202827745-Recommended-Settings-on-a-Sonicwall-for-Digital-Voice
In the VOIP Section, make certain that "Enable Consistent Nat" is checked. Under firewall settings, disable SPI (Stateful Packet Inspection) Under Firewall Settings, Advanced, set UDP Timeout to 350 seconds; If you are not receiving any 'ringback' when dialing out the Sonicwall may be blocking the ringback tone.
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