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The causes of No-Audio and One-Way-Audio VoIP Calls ...
https://blog.kolmisoft.com/the-causes-of-no-audio-and-one-way-audio-voip-calls/#:~:text=A%20no-audio%20call%20is%20when%20you%20have%20a,that%20indicates%20that%20the%20signaling%20part%20works%20OK.
SIP - No audio or one way audio :: Zoiper
https://www.zoiper.com/en/support/answer/for/android/11/SIP_-_No_audio_or_one_way_audio
SIP - No audio or one way audio. When using SIP protocol one way or missing auido issues mostly appear due to configuration problems. The issues usually …
SIP phone has no audio at either end - Cisco Community
https://community.cisco.com/t5/ip-telephony-and-phones/sip-phone-has-no-audio-at-either-end/td-p/2343861
The phone rings and makes an initial connection, but after that, fail - no audio on either end. The SIP trunk is actually provided over the internet by a 3rd party provider (Gamma), so all the phones need is a local drop off to the internet. I have configured my VLAN on the core router to do this.
How to troubleshoot one-way and no-way audio on VoIP …
http://info.teledynamics.com/blog/how-to-troubleshoot-one-way-and-no-way-audio-on-voip-calls
SIP ALG is a firewall setting that can either be enabled or disabled -- generally, the audio issues occur when it's enabled. (3) Incompatible Codecs When a VoIP call is initiated between two phones, they negotiate and choose a codec that is available to both devices.
Solved - Direct SIP Calls - rings -> pickup phone -> no audio
https://www.3cx.com/community/threads/direct-sip-calls-rings-pickup-phone-no-audio.63269/
Direct SIP Calls - rings -> pickup phone -> no audio. Not open for further replies. Installed the Enterprise edition of the 3CX phone system with yealink phones, soft phones on iOS and am now struggeling to setup the Direct SIP Calls on the system. Followed the articles to setup the SRV records in DNS, A-Records as fall back in case domain name resolution with service …
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.
SIP Registering. Rings External Phone. No Audio/Sound ...
https://community.freepbx.org/t/sip-registering-rings-external-phone-no-audio-sound/31325
SIP Registering. Rings External Phone. No Audio/Sound. FreePBX 12.0.76.2 Asterisk 11.19.0 Linux 2.6.32-431.el6.i686. I am using SIP Station trunks. The sips are registering. I am able to ring my cell phone from the handset But there is no audio from the handset. The SIP trunks are in use on a second server and working fine.
The causes of No-Audio and One-Way-Audio VoIP Calls ...
https://blog.kolmisoft.com/the-causes-of-no-audio-and-one-way-audio-voip-calls/
A no-audio call is when you have a call between two phones, and neither of them can hear the other. Without going deeply into the networking stuff, it is important to remember that a call consists of the signaling part (SIP) and the media part (RTP). When a call connects initially, that indicates that the signaling part works OK.
SIP no Audio - Avaya: IP Office - Tek-Tips
https://www.tek-tips.com/viewthread.cfm?qid=1777570
amriddle01 (Programmer) 24 May 17 11:10. Varies depending on whose SIP trunk you use and how they configure their trunks, so there is no one size fits all list of ports. 5060 is common obviously and whatever RTP range they use, some use 5061 too, some change it completely. RE: SIP no Audio.
How to troubleshoot one-way / no audio issues - Cisco ...
https://community.cisco.com/t5/collaboration-voice-and-video/how-to-troubleshoot-one-way-no-audio-issues/ta-p/3164442
Sometimes the users even refer to these as "dropped calls" because they get a call, there is no audio and after a few seconds they hear reorder tone, (fast busy), this happens because the caller cannot hear the called phone and it's getting dead air and hang up, or maybe they can hear the other end, but realize that the called phone cannot hear them and hang up.
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