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SIP behind firewall no audio in both ways - Cisco Community
https://community.cisco.com/t5/ip-telephony-and-phones/sip-behind-firewall-no-audio-in-both-ways/td-p/4191197
SIP behind firewall no audio in both ways. Hello Everyone im new in voip im working in new project and i have this toplogy. Cisco jabber -->Cucm-->Cube-->Firewall (sophos)--->INTERNET (SIP-Trunk) the problem was the phone ringing but there's no sound in both ways and i think the problem is NAT. the firewall is sophos.
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.
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/
The SIP standard defined in RFC3261 is sometimes implemented with exceptions or interpretations made in various devices, thus leading to broken audio. For example, the header in the SIP packet can have local IP, and some devices will fail to deliver audio because of this. The same goes for a wrongly configured Via: header.
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 no Audio - Avaya: IP Office - Tek-Tips
https://www.tek-tips.com/viewthread.cfm?qid=1777570
RE: SIP no Audio. 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.
SIP no audio with FreePBX - Netgate Forum
https://forum.netgate.com/topic/163469/sip-no-audio-with-freepbx
I have a SIP client on internet which is configured to connect on x.x.x.218. The client registers on FreePBX and I can make and receive calls, but audio is a problem. If I place the call on the SIP client, there is no audio at all. If I place the call elsewhere and call the SIP client, the SIP client side has audio, but not the other side.
Experiencing One Way Audio When Connecting via SIP
https://knowledgebase.paloaltonetworks.com/KCSArticleDetail?id=kA10g000000PLooCAG
An issue may arise when you disable this feature on the firewall by going into the firewall (Objects > Application > SIP > ALG) and configure an application override for the SIP traffic. After doing the app override the firewall will loose the Layer 7 visibility and will not be able to perform Layer 7 NAT. Why it is important to enable ALG?
Solved: ASA 5505 Allworx VOIP No Audio - Cisco Community
https://community.cisco.com/t5/firewalls/asa-5505-allworx-voip-no-audio/td-p/1474805
ASA 5505 Allworx VOIP No Audio. I am running into the following issue. I have a currently workin ASA5505, clients can get VPN and do what they need to do. We recently added an Allworx VoIP system that uses SIP. The ports that are required are: SIP TCP 5050. SIP UDP 5060. BLF UDP 2088. RTP UDP 15000-15511.
No inbound audio behind Fortinet Firewall | 3CX Forums
https://www.3cx.com/community/threads/no-inbound-audio-behind-fortinet-firewall.4951/
To disable the SIP and H.323 session helpers use the following syntax: config system session-helper delete 12 delete 3 delete 2 end Keep in mind to delete session helpers starting at the highest numbered one. Otherwise you may inadvertently delete the wrong session helpers if you are not careful. ***** config system settings set sip-helper disable end and
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