Unified Communications Infrastructure

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...

Hello,Does anyone have proper documentation to follow how to setup the CUCM IP Phone vpn profile/settings to go through an FMC Firepower 2130 using the anyconnect SSL licenses?

Some time ago, we attempted to upgrade our UCM installation from v11.0 to v11.5. The upgrade process would fail partway through the operation. Also acknowledged that we are way way behind in the upgrade tree. We were then told by TAC that we were una...

Below is our current simple UC setup. Call center with 3 agents who pickups call on queue via using Cisco Finesse & physical ip phone. UCCX 12.5 CUCM 12.5 We have a scenario as below Caller calls call center hotline/pilot line --> Agent A answers cal...