Category Archives: Technical

Signing a Certificate in Cisco IOS for CUBE with TLS + SRTP

Leave a reply

With the drive of unified communications to cloud based connectivity, a Session Border Controller (SBC) can play an important part in supporting a migration from premise equipment.  Some gateway manufactures provide a convenient Graphical User Interface (GUI), others still focus on leveraging a command line interface (CLI).  This overview will step through the generation and signing of the certificates that would be used for Tranport Layer Security (TLS) for both signaling and media within a Cisco Unified Border Element (CUBE).

Continue reading →

Cisco and Microsoft UC Integration: Part 1 – Intradomain Federation Messaging

Leave a reply

Working through many conversations with customers has lead to example the steps required to complete some Microsoft and Cisco integrations within the Unified Communications (UC) space.  For the scope of this exercise, the Skype for Business and Jabber endpoints using the same domain will be enabled for direct messaging only communication.  This is the first post in an intended mini-series referencing the integration as well as user experiences.

Continue reading →

Cisco Push Notifications for iOS and Jabber

Leave a reply

With the recent release of Cisco UC products, an additional feature has been delivered.  Jabber messages, both internal and Mobile and Remote Access (MRA) connected, can now be delivered through Apples cloud-based Push Notification Service.  While this may not peak everyones interest, it is a prelude to enabling the same functionality for other communication channels.

Continue reading →

Upgrade to Expressway 8.8.1 Breaks MRA

1 Reply

After completing an upgrade to Expressway 8.8.1, it was noticed that Mobile and Remote Access (MRA) suddenly stopped working.  After some searching and log files, it was found to be a DNS PTR record issue.  The  implemented “feature” that required the Expressway-E DNS PTR resolution had only been implemented as a requirement in version 8.8.1.

Continue reading →

Cisco Unified Communications Licensing Install and Rehost

Leave a reply

I currently have some UC 10.x and 11.x licensing that is purchased and used for demonstrations.  With the recent purchase of the 11.x licenses, a Prime License Manager (PLM) server was stood up to manage the multiple clusters using multiple versions of the CUCM platform. This post walks through the process of standing up a stand-alone PLM server, pulling licenses from the Cisco licensing website, and the rehosting of licenses from a legacy license manager.

Continue reading →