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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,of%20the%20problem%20usually%20involves%20IP%20routing%20issues.
Solved: One-Way voice in a call over VPN - Cisco Community
https://community.cisco.com/t5/ip-telephony-and-phones/one-way-voice-in-a-call-over-vpn/td-p/2232262
One-Way voice in a call over VPN. We have a problem with the calls when they come from a user connected through VPN. The topology is the next: VPN User->ASA->ROUTER->User in office. Both users are in inside interface and the command " same-security-traffic permit intra-interface" is configured so the traffic is allowed.
One way audio through VPN | 3CX Forums
https://www.3cx.com/community/threads/one-way-audio-through-vpn.42026/
The phone must connect through VPN to be able to register. Problem. Using 3CX Phone for Android results in one way audio. Internal extension can hear, the phone (external through VPN) cannot. The phone registers with the correct VPN …
One-way Audio over Site-to-Site VPN at Remote Sites ...
https://community.freepbx.org/t/one-way-audio-over-site-to-site-vpn-at-remote-sites/51675
One way audio is usually NAT config. If your PBX has a Private LAN IP, then you want to set Settings, Asterisk SIP settings with NAT=yes, the external IP specified correctly, and then enter ALL the local subnets that are not natted. …
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
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. The VPN is working well. There is call manager CUCM in both sites, one is v12 restricted and another v8.5 …
One way audio via VPN - ShoreTel Forums
https://www.shoretelforums.com/forum/shoretel-tech/administrators/1465-one-way-audio-via-vpn
The network engineer has created a VPN using Snapgear Firewalls over a 6M wireless. HQ site has SG-T1 for a PRI and SG90 for phones. VPN site has SG50 for phones and analog backcup. calls that come in on the PRI work fine routed to the VPN site with 2 way audio. However, internal calls between the 2 sites are one way only.
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 …
Avaya CM: One way audio when the call is from VPN to LAN ...
https://www.tek-tips.com/viewthread.cfm?qid=1757681
99 times out of 100 when you have 1 way voice path you have either a codec mismatch or packets from one direction not making it back through the proper path through the proper ports. For the first, list trace the stations and see what they are negotiating. For the second you will probably need some packet captures.
One Way Audio Help - IP PBXs - Grandstream Networks
http://forums5.grandstream.com/t/one-way-audio-help/41448
Put your extenal IP in the top box Put all Local IPs in the list (that is all IPs that are inside your network) Select NAT in the extension’s settings (it can be there for all extensions and that is what Grandstream recommends) The informs all the endpoints of which IP address to use when sending audio to the UCM.
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