We are using CUCM 8.x and MGCP gateway 3925. After migrating MPLS link from one SP to another we are facing one side voice issue when users call from soft phone or CUPC when they connect through VPN. Soft phone users can hear PSTN user but PSTN caller not able to hear Softphone users. Users able to hear each other when they call internal extensions even though connected through VPN. Anyway call setup is working fine and user able to hear the ring back tone also. But when call answers ther is only one side voice. We are not sure what happened after link migration. Is it a firewall issue ? somebody can help us on this. Thank you
I doubt its a codec issue as the call wouldnt complete. Normally one way audio issues are routing issues.
The very fact that Softphone is able to hear PSTN and vice versa doesnt work prompts me to sniff the egress interface of the router (interface where you have bound yr media traffic) and see if there is a increment with source being the ip add of the cups/cipc.
what changed between yr first and second provider, like ip add, ports etc..
i still think its a network / firewall traffic issue.
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The short answer is that you don't.... That isn't entirely true while at
the same time it kind of is, but for the most part you don't configure
the softkeys. You enable or disable them via TCL. Here is the long
answer. Be sure to read the whole thing or e...
Topology: IP Phone > Switches > Microsoft NPS setup to forward 802.1x
proxy to > ISE 2.1 patch 3 Authentication: EAP-TLS using Cisco MIC SANs
Phone Models 802.1X support? 802.1x flavor Addtl Comment EAP-MD5 EAP-TLS
Cisco 3905 Y Y N Cisco 6911 Y Y N Cisco ...