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ASA 5510 SIP and One way audio - Cisco Community
https://community.cisco.com/t5/network-security/asa-5510-sip-and-one-way-audio/td-p/1910523
ASA 5510 SIP and One way audio. I am banging my head against the wall as I am trying to figure this out. We have a asterisk based PBX running on a server and it is not VLAN'd or anything as we have a large pipe coming in. We are using NAT and the problem is that occassionally we have audio issues when we call out to an outside caller, and we ...
Solved: Cisco ASA SIP - one way audio on external phone ...
https://www.experts-exchange.com/questions/27020702/Cisco-ASA-SIP-one-way-audio-on-external-phone.html
Cisco ASA SIP - one way audio on external phone. hassler asked on 5/5/2011. Cisco Voice Over IP. 5 Comments 1 Solution 4082 Views Last Modified: 5/11/2012. Hi, I have a Cisco ASA 5505 with an Asterisk server on the inside of the network (most phone on the LAN side as well) using an Internet-based SIP Trunk provider. All works well.
One way audio ASA - Cisco Community
https://community.cisco.com/t5/network-security/one-way-audio-asa/td-p/1236803
Using TSHark, capture the SIP, RTP and ICMP traffic into a handful of ring buffer files. When the problem occurs, see if the audio streams are present on the the other side of the ASA. If not, you will want to keep moving toward the other end. Additionally, you might want to see if your ASA is logging any dropped packets from the other end.
Solved: One way audio on SIP calls Cisco ASA 5510 ...
https://www.experts-exchange.com/questions/24076417/One-way-audio-on-SIP-calls-Cisco-ASA-5510-transparent-firewall.html
One way audio on SIP calls Cisco ASA 5510 transparent firewall. ntssupport asked on 1/22/2009. Cisco. 3 Comments 1 Solution 3535 Views Last Modified: 5/6/2012. I have two sites that are connected via 8 bonded pairs of SHDSL on two Zhone EtherXtend 3384's in a bookend configuration. One side is the CO or central office, the other is just our ...
How to punch SIP One Way Audio in the face - UCPros
https://ucpros.net/sip-one-way-audio/
With SIP one-way voice issues, we are usually looking for a specific audio path that can’t reach its destination, thus, we first have to realize which stream we are looking for. If phone A can’t hear phone B, the logic will be to take a look at the source
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
One security component of a firewall specifically designed for voice is the SIP Application Layer Gateway (ALG). 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
How to solve VoIP one way audio- step by step.
https://www.voipmechanic.com/voip-one-way-audio.htm
If one way audio still exists check to see if you have a public or private (192.168.1.xxx) IP address. Public IP- Call your VoIP provider. If you are getting one-way audio with a public IP address, there is an issue with the way the VoIP provider is handling the call.
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
One of the most common challenges involves a technology called Network Address Translation (NAT), which for data networks has been a godsend, but if not configured carefully, could cause problems for voice applications. In particular, NAT is a common cause of one-way and no-way audio on VoIP calls.
FTD 6.2.3 - SIP Inspection : Cisco
https://www.reddit.com/r/Cisco/comments/brp8lu/ftd_623_sip_inspection/
My knowledge is a bit dated, (ASA 7.x code) but histprically the purpose of sip inspection is to expose the underlying sip endpoint information to the firewall so it can determine how to appropriately build NAT tables allowing multiple sessions to traverse the firewall while maintaining the individual session state.
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