Cisco Intelligent proximity allow us to connect, control, share content with Cisco Video devices wirelessly. If we go through the proximity data sheet we see two terms, one is Intelligent Proximity for Mobile Voice and second Intelligent Proximity for Content Sharing. Is it the same ? The answer is NO. Whats Intelligent Proximity for Mobile…
Category: Unified Communication
Mobile And Remote Access (MRA)
Cisco Unified Communications Mobile and Remote Access (MRA) is part of the Cisco Collaboration Edge Architecture. It allows endpoints such as Cisco Jabber to have their registration, call control, provisioning, messaging and presence services provided by Cisco Unified Communications Manager (Unified CM) when the endpoint is outside the enterprise network. The Expressway provides secure firewall…
Expressway Zone
When a call reaches Expressway, Expressway classifies it based on source and destination address and port.Based on classification, the call is sent to a specific «zone».Except for the Local Zone , the other zones connect to remote systems as in the case of a SIP Trunk on CUCM Different policies can be applied per zone,…
Expressway C and E Media Traversal
Components of Expressway Media Traversal Proxy Default component used for media traversal Back-to-back user agent(B2BUA) B2BUA is an application invoked by the Proxy that fully terminates a call leg and establishes a new call leg. The call legs are then bridged together and count as different calls. When using Media encryption policy other than “Auto”…
Business-to-Business using Expressway
Whats a Business to Business call ? When user place a call outbound from the enterprise to an external video service/customer or receive a call from external video service/customer over the internet its a business-to -business call. How can we make it working? Using Expressway servers we can make this working. Expressway C and E…
Analyzing Debug ISDN Q931
In this blog i explain complete set of messages send between ISP and Gateway for a call made from my mobile to my desk phone extension 399. I did a debug ISDN Q931 on my gateway inorder to capture the messages. Even though a deep level analysis are mostly done by TAC, its always good…
CUCM backup using PCD as a SFTP Server
This blog describes how to use Prime Collaboration Deployment (PCD) as a Secure File Transfer Protocol (SFTP) server in order to provide a remote server option for tasks such as upgrades, backups and restores. Requirements Cisco recommends that you have knowledge of: Cisco Unified Communications Manager (CUCM) version 11.5(1) or later PCD version 11.6(2) or…
Using ACME on Expressway-E
The below is from Cisco Expressway configuration guide. I will be testing this on my lab and will share the screenshots. From X12.5 the Cisco Expressway Series supports the ACME protocol (Automated Certificate Management Environment) which enables automatic certificate signing and deployment to the Cisco Expressway-E from a certificate authority such as Let’s Encrypt. The…
CUCM Versions and Builds
(A) Major version (License)11.5.1.10000-6(B) Minor version (Long Life Release)11.5 .1.10000-6(C) Maintenance release(Patch (Patch and/or (Patch and/or Feature)11.5.1 .10000-6(X) Build (Patch)11.5.1.1 0000-611.5.1.2 0000-5 (example)(Y) FCS:0, ES or SU: 1 911.5.1.10000-6 (FCS)11.5.1.12900-21 (ES or SU look at last three digits)(zzz) FCS:000, ES: 001 899, SU: 900 99911.5.1.10000-6 (FCS)11.5.1.11001-5 (ES) (example)11.5.1.12900-21 (SU)
CUCM License Usage & DAT
The license usage is a tricky part. If the devices are not configured properly it start consuming the wrong license and eventually you end up seeing License warning on CUCM page. I am using few images from Cisco live content in this session. CUCM License Usage Owner User ID Association is a major change you…
CRAZY NETWORKING 