Unified Communications Infrastructure

Hi, We have a CUCM cluster with two nodes Publisher and Subscriber, each have CAP-RTP-001 (CallManager-trust) and CAPF-317672FA (CAPF-trust) certificates which will be expiring soon.  From my understanding these are system installed certificates. Sin...

Hi there,I am planning a PCD based migration from CUCM/IMP 12.0 to 12.5. Previously while doing in place upgrades (non-migration), I used to disable the High Availability under Presence Redundancy groups on the CUCM, as per the upgrade guide. However...

Hi,We've recently upgraded our CUCM infrastructure to 14.0.1.12900-161 from 11.5 SU10, and since that point we've found that a script we use to list out all Remote Destinations is causing the CUCM node which is queried to CPU flatline at 100% without...

Hey everyone,I am trying to monitor changes to a specific phone entry (userID) via the listChanges API and am unable to see any change information.  I am running CUCM 12.5 in a DEV environment so no other changes are being made except for mine.  Doin...

Hello ,We configure new unified messaging on office 365it is not working we got errors:Searching the network , Failed to locate a Domain Controller via DNS.Searching the network , Failed connected to Exchange CAS server.my version of CUC 11.5 any ide...

I develop SIP endpoint device which I'm testing against CUCM v14. My device allows multiple line registrations with CUCM. If I only populate a DN for Line 1, I'm able to register over TCP just fine. However, once I add a second DN to Line 2, CUCM get...

I have a customer with a bunch of voice gateways that route certain numbers to a PCCE installation. Currently the numbers are routed there via an e164 pattern map, but that is hard to maintain on 20+ separate gateways. I know in the past CUSP (Sip Pr...

Working on a 2911 that is configured as a MGCP gateway in CUCM 12.5 and has 2 PRIs on it.  I'm receiving 4 digits from the carrier and normal DNs are working as expected.  If they perform a CFA or CFNA on their extension outbound to the PSTN it works...

Our CUCM sub is suddenly down, not all our IP phone register from PUbwhat should I do to reinstall the Sub without losing any data from PUBwhat should I do to make all the phones register from PUB until reinstalling the SUBOur CUCM Version 7.1.5.3000...

Hi We currently have CUCM/IMP/CUC (SCCP integration ) version 12.5 . Wanted to understand what security features are enabled by default in these versions. What are the benefits of  Mixed mode vs Non Secure mode. What is the maximum in terms of Securi...

I am attempting to add a new subscriber to CUCM 12.5.1.10000-22 server that I just finished upgrading from 11.5, but I get the following message after I try to add a new server: Add failed. Upgrade and migration for Cisco Unified IM & Presence Server...