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Dear All, We are planning to deploy Expressway B2B for communicating between two different clusters where direct IP communication between the IP Phones is not possible. My concern is that Expressway B2B supports extension dialing. Thank You
Hello All,I am planning to deploy the CUCM, IMP, & CUC clustering over wants to provide HA in case of a site failure. In the same setup, we need to have an expressway also clustered over the WAN. We are using not using Expressway for the MRA. It is b...
Dear All,I have an existing CUCM cluster 11.6.x on old hardware and I am planning to build a new cluster with a new version (12.5.x). I want to import only IP phone configuration to the new cluster. Also, the old cluster is in non-secure mode and the...
Hello Team,We have a scenario to make calls between two different call manager clusters. Both the clusters are in two different air-gapped networks. And these clusters are serving 100s of sites. Cluster A hosted in DC1.Cluster B hosted in DC2. Cluste...
Hello All, I am trying to migrate my CUCM cluster 11.5.1.12900-21 to another host. Target also will be using 11.5.1.12900-21. I am getting the below error. Any Insight? IPM|Internal Error, File:ipm.c:2011, Function: ipmReadNormalizedInputLine(), "/us...
Hello Roger,Thanks a lot for your response. We have video conferencing included as well. So, as per Cisco TAC and AM, it will be difficult to have CUBE in between them. Also, we will be having two different domains for these two networks. Can we do ...
Hello Roger, As per Cisco TAC, it is supported if the below network requirements are fulfilled. ■ Each peer has a different LAN configuration (a different IPv4 address and a different IPv6 address, whereenabled).■ Expressway supports a round trip de...