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Field Notice: Cisco CallManager Express Sites May ...
https://www.cisco.com/c/en/us/support/docs/field-notices/620/fn62100.html#:~:text=One%20Way%20Audio%3A%20The%20PSTN%20user%20calls%20directly,completed%20fine%2C%20but%20results%20in%20one%20way%20audio.
One-way audio on PSTN calls with newly installed Cisco ...
https://community.cisco.com/t5/ip-telephony-and-phones/one-way-audio-on-pstn-calls-with-newly-installed-cisco-4351-as-h/td-p/3948457
I have a Cisco 4351 with two NIM-4FXO modules connected pots lines to PSTN. I am experiencing one-way audio on PSTN calls where the called party can hear me but I can't hear the called party on my IP phone. The issue started after I replace the Cisco 2901 with this new 4351. I basically replicate the config from the old 2901 over to the new ...
Troubleshoot one-way audio for PSTN calls - Cisco Community
https://community.cisco.com/t5/collaboration-voice-and-video/troubleshoot-one-way-audio-for-pstn-calls/ta-p/3122681
Troubleshoot one-way audio for PSTN calls. 11-26-2009 08:46 AM. 1. For H.323/MGCP gateways, add bind statement. 2. Ensure IP routing is enabled on the gateway. 3. Verify IP routing between endpoints. 4.
Cisco Webex Meetings Audio PSTN Coverage for …
https://www.cisco.com/c/dam/en/us/products/collateral/conferencing/webex-meeting-center/cisco_webex_gpl_audio.pdf.
Cisco Webex® Meetings Audio provides the broadest global Public Switched Telephone Network (PSTN) dial-in and call-me services to attendees in Cisco Webex Meetings, Events, Trainings, and Teams. The audio options available with Cisco Webex products promote efficient discussions among participants by providing a fully integrated experience.
No Audio or One Way Audio after Transfer or Forwarding - Cisco
https://learningnetwork.cisco.com/s/question/0D53i00000qeorHCAQ/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 …
Cisco Bug: CSCvr16492 - One way audio on CP-8821 phones ...
https://quickview.cloudapps.cisco.com/quickview/bug/CSCvr16492
Symptom: One way audio on CP-8821 phones after RTP sequence number reset / rollover. Usually this happens with outgoing call from CP-8821 to PSTN when service provider reset RTP sequence number at the time remote PSTN user picks up the call. In this scenario CP-8821 user will hear ringback coming fro.m PSTN but will have no audio after remote PSTN user …
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.
CM to PSTN - One Way Audio - Cisco: Call Manager - Tek-Tips
https://www.tek-tips.com/viewthread.cfm?qid=1185007
I have a Cisco 2651 router with a NM-1V w/ a VIC-2FXO card. The router is configured and registered with the CallManager as a MGCP Gateway. I am able to make and receive calls, but there is only one way audio. I am able to hear the party on the other end, but they can not hear me.
US20040037219A1 - System and method for providing …
https://patents.google.com/patent/US20040037219A1/en
The present invention provides a system and method for providing fault tolerant IP services that includes establishing a first communication session between an originating telephony device and an application server, through a primary call manager. Failure of the primary call manager may be detected. A second communication session between the application server and a destination …
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