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Troubleshooting One Way Voice Issues - Cisco
https://www.cisco.com/c/en/us/support/docs/voice/voice-quality/5219-fix-1way-voice.html#:~:text=When%20a%20phone%20call%20is%20established%20from%20an,one%20of%20the%20parties%20receives%20audio%20%28one-way%20communication%29.
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
A one-way audio call is when you have a call between 2 phones (internal-internal or internal-external), and one of them cannot hear the other …
one way audio with SIP trunk through a site-to-site VPN ...
https://community.cisco.com/t5/ip-telephony-and-phones/one-way-audio-with-sip-trunk-through-a-site-to-site-vpn-issue/td-p/4009491
one way audio with SIP trunk through a site-to-site VPN Issue. I have a problem that calls through VPN connection between two sites with sip trunk are established well (Signaling) but for media (RTP) they sometimes are one-way audio or no audio at all. There is a VPN connection between two sites by Fortigate.
CallManager H.323: One-way Voice Issue after ... - Cisco
https://www.cisco.com/c/en/us/support/docs/voice-unified-communications/unified-communications-manager-callmanager/8604-oneway-voice-after-transfer.html
Introduction. This document describes the scenario in which a user gets one way audio issue with Cisco CallManager after a call is transferred or placed on hold, if the H.323 endpoint that is configured on the CallManager is a Fast Ethernet subinterface of the gateway. This occurs especially when the Music on Hold (MOH) is enabled.
How to solve VoIP one way audio- step by step.
https://www.voipmechanic.com/voip-one-way-audio.htm
Solve One Way Audio-Step by Step. One way audio where one side or one party can hear the other, but not reverse, is typically indicative of something stopping either the outbound or inbound audio from reaching the receiving party. One way audio can be caused by network issues; NAT (Network Address Translation) issues or firewalls, so finding the cause will require …
Troubleshooting One-Way Audio – OnSIP Support
https://support.onsip.com/hc/en-us/articles/204132734-Troubleshooting-One-Way-Audio
Our network will return the same port for inbound audio as outbound audio, which simplifies the job for the NAT devices involved. Check https://admin.onsip.com. To see if your phones/firewall are sending OnSIP the proper packets, log into the Onsip interface and click on 'Users'. Click on the name of one of the users to see the User Detail.
No Audio or One Way Audio after Transfer or Forwarding - Cisco
https://learningnetwork.cisco.com/s/question/0D53i00000qeorH/no-audio-or-one-way-audio-after-transfer-or-forwarding
The signaling phase normally traverse intermediary device and/or call processing servers like CUCM, CUCME while the media NORMALLY flows between the two endpoints involved in the call directly, this means that if there must be ip reachability between the two endpoints involved in the call, if there is no reachability at all then you will have no audio or if there is reachability on one …
site to site vpn - One way audio on SIP phone on one call ...
https://serverfault.com/questions/15116/one-way-audio-on-sip-phone-on-one-call-direction-where-to-look-next
If it was a codec issue, you'd have no audio, because the phones would be unable to send audio between each other. One way audio is almost always caused by RTP not passing through. Per DLux's statement, turning off SIP ALG or SIP Fixup or SIP Transformation - different routers use different terms for the same thing - is a good first step.
Cisco Bug: CSCux45004 - One way audio between CP-3905 and ...
https://quickview.cloudapps.cisco.com/quickview/bug/CSCux45004
Symptom: In a call between 3905 under CUCM and analog phone under SIP server, one way audio happens. Other IP Phones have no problem. Once using MoH, the issue is resolved. When the issue happens, who cannot hear the audio is always 3905 side. Conditions: Analog phone - SIP server - CUBE - CUCM - 3905
Cisco Bug: CSCvb66081 - One way audio between JabberGuest ...
https://quickview.cloudapps.cisco.com/quickview/bug/CSCvb66081
Symptom: Call scenario is: JabberGuest - VCSe1 - VCSc1 - CUCM - VCSc2 - CMS The Cisco Meeting Server reports that it has no incoming Audio, and that Opus was negotiated. Conditions: With the CUCM in the call the PT signalled from JG to CMS is 114 (i.e. the CMS should be sending opus on dynamic payload 114 to JG client), and after the delayed offer the PT from …
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