Unified Communications Infrastructure

Hello,We have Cisco Expressway X15 MRA. When a Jabber client tries to log in from outside the corporate network, I can see the authentication attempt in the Expressway-C logs, but Jabber then reports that the user cannot connect from outside the netw...

Dear Community,I currently manage two separate Cisco Unified Communications Manager (CUCM) 12.5 · Production: Running on physical UCS hardware· Lab/Test: Running on VMwareWorkstation for simulation and testing purposesBoth clusters are associated wit...

Used to call into bridge conference calls hosted on a CP-8831 from a personal cell (iPhone 12) suddenly stopped working on day. Tried another CP-8831 unit and had the same issue. When I call in it just sits there and rings and rings, before it would ...

 Issue: CUCM encountered a bug that caused Call Manager to move the Root CA and Intermediate CA certificates into the Phone Trust store, resulting in the SIP OAuth failure.Verification and Troubleshooting:Download Caconfig json file and verify it con...

Hi Everyone,I've run into a strange issue since yesterday with our Expressway Core and Edge deployment.The setup was working fine until yesterday, and there have been no configuration changes on either server.Issue:Calls initiated from Cisco Room Kit...

Hi, has anyone here handled a CUCM integration with a PMS? May I know what CUCM details or information are typically required to be configured in the PMS for the integration?

Hi,We need to upgrade the ESXi OS from 7.0u3m to 7.0u3w.. In Broadcom portal its allowing to download 8.0u3 but not 7.0u3w.Request if i can get 7.0U3w depot file or alternative way to download the 7.0U3w depot file.Regards,Jagadish

Hi, I am interested in the NFVIS for UC hypervisor that was announced last years. Does anyone know when this is actually going to be available? I saw a document that said support for UC would be in version 4.18.1 but I cannot see anything about such ...

Hi Guys, Any evidence or documentation out there yet stating that Cisco CSR 15 supports ESXi 9.x. I can see the UCS-C220 hardware from M5 - 7 does support it but no official OVA or statement yet that CSR 15 supports Esxi 9.x?

Hi, everyone!I have two call managers: CUCM and Avaya Aura. Currently, video calls can be made on each PBX.Calls between extensions on CUCM and Avaya are also working normally.Here’s an overview of the trunk configuration:CUCM <-----SIPTRUNK-----> Av...