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Hello! In this article, we’ll tell you how to connect Third Party SIP Phones (i.e. other vendors’ phones and softphones that support RFC3261) to Cisco Unified Communications Manager (CUCM). As an example, we’ll use a popular free softphone named X-Lite.
CUCM Configuration
First of all, create a ...
Recently Cisco has released the 12th version of Cisco Unified Communications Manager. In this article, we’ll tell you about 5 main features included in the 12th release.
Mixed (Hybrid) Installation Support
It’s 2018, and cloud solutions are getting more and more integrated into business, becomin...
Today we’ll tell you about Cisco Systems’ proprietary protocol named SCCP – Skinny Client Control Protocol. It was created for corporate phone networks based on Cisco products, such as:

IP Phone series 7900

Cisco IP Communicator softphones

Cisco Unified Communications Manager

Cisco ...
Hello! In this article, we’ll tell you how to capture packets on Cisco phones connected to Cisco Unified Communications Manager (CUCM). Packet capture is useful for troubleshooting. This article will show you how to do this by connecting a phone to PC via the built-in PC port. In this case, the copy...
This article describes the practical details of handling the databases in Cisco Unified Communications Manager (CUCM) PBX and Voice Operating Systems (VOS) in general. The article is recommended for engineers with more than a year’s CUCM administration experience. In 2006, when CUCM 5.0.1 (the first...
This article tells about the Dialed Number Analyzer in Cisco Unified Communications Manager (CUCM). Why do you need it? Suppose you are configuring a complicated dial plan on your server. There are CSS, Partitions, Route Groups, Route Lists, Route Patterns, etc. How should you test it to find mistak...
This article is about routing in Cisco Unified Communications Manager (CUCM). Today’s topic is Time of the Day routing. This feature helps you to distribute calls depending on the time of day and day of the week. For example, you can forbid international calls during nonworking hours and on weekends...
This article will show you the CallBack feature in Cisco Unified Communications Manager (CUCM). The CallBack feature is used to inform the caller when the called party line becomes available. First, open Cisco Unified Serviceability menu → Tools → Service Activation. Then select your server and make...
This article will show you how to gather traces in Cisco Unified Communications Manager (CUCM). This information can be useful for trouble shooting. It is also needed in a request for Cisco TAC engineers. To collect traces, you will need to install Real-Time Monitoring Tool application. You can find...
Cisco teaches how to record CUCM calls even without having its own call recording solution. Why? That's interesting. As we're all aware Cisco MediaSense reached its EOL in 2017 with no replacement available from Cisco. All the call recording solutions on the market are developed by 3rd party Cisco S...
Based on the documentation: https://www.cisco.com/c/en/us/td/docs/voice... The prerequisites (hardware and software) are the following:

2x UCSC-C220-M3SBE

VMWare ESXi 5.1

CUCM (two Subscriber nodes, Publisher, version 8.6.2.25900-8)

CUCM (up to 1000 users)

CUCM Guest: 2vCPU, 40...
Self-Provisioning is another function that makes CUCM deployment and user management much easier. It helps the user to automatically associate and configure the phone. Let's look into the process of configuring this function. The users already have been imported from Active Directory. Integrating CU...
Why do companies change their logos?
Here are some reasons skipping obvious ones like M&A, change in the name etc: There are a number of reasons, most often brought about by a combination of external cultural changes and shifts along with internal company shifts that now warrant ensuring that ...
Integrating CUCM and Active Directory can make administration much easier. Correct configuration may help you to automate new phone registration in the future. This article will help you to get the most out of using CUCM in a bundle with AD. First of all, you should activate the Cisco DirSync servic...
This article presents a small set of commands for Cisco Voice Operation System (VOS) based servers. These commands help to reveal most problems caused by the platform. Each command comes with a brief description. The most important output data is marked with bold.
1. show status
If you need to ...
Integrating Asterisk and CUCM via SIP makes it possible to combine several phone pools or, for instance, to use Asterisk as an IVR (interactive voice response system). This article gives instructions on connecting Asterisk and Cisco Unified Communications Manager through a SIP trunk.
Configuring C...
Guys, I bet we'll hear the end-of-sale and end-of-life announcement for Cisco TelePresence Management Suite till the end of 2018. Here's the thing…

CMS (former Acano) has nothing to do with TMS.When Cisco acquired Tandberg back in 2010 TMS (former Tandberg Management Suite) and hardware Cisco...
As you go through RTMP logs on a Call Manager server, sometimes you can come across a critical warning of the following type: LogPartitionLowWaterMarkExceeded. Despite the critical status, in most cases this problem doesn't affect the system's functioning, but the disk overfill may interfere with so...
There are different reasons that can cause call getting hung on CUBE. It was noticed that the calls get hung more often in case of a sudden loss of connection. They have an "incomplete" state, having one or two call legs. cube#show call active voice compact A/O FAX T Codec type Peer Addres...
When we call almost any company, we usually can hear a sweet (or not so sweet) voice naming the company we have reached and asking us to perform certain actions. That means we’ve reached an automated attendant. An auto attendant (AA) usually is the simplest form of Interactive Voice Response (IVR) s...
This article is about practical monitoring that helps answering such questions as call activity, the calls passing through a trunk, etc.
Call activity on CUBE


Active calls:     show call active voice compact

The active calls summary by the number of call legs:     show call active voi...
This is another guest post that we find quite useful for our readers. The author discusses briefly the CUCM architecture in order to understand better the CUCM traces. CUCM is a C++ application working on the Red Hat Linux OS. There are SDL (Signal Distribution Layer) processes within the applicatio...
This article is about configuring Single Number Reach (aka Mobile Connect) feature in Cisco Unified Communications Manager (CUCM). When you receive an incoming call on an extension number in a cluster, the Single Number Reach (SNR) enables rerouting the call not only to a DN, but also to a remote n...
Have you already seen the 2016 Global Contact Centre Benchmarking Report Summary by Dimension Data? Almost a third of contact centers plan to deploy the "Video Chat" channel within 1 year. I'll put my comments on this figure in the next post, but in this one I want to talk about the termin...
The company my friend works for has changed its logo recently, so he was asked to update the logo on all the users' phones. In general, this is an easy task with the solution described in many places, but almost always that's a description of a manual update using a TFTP server. Besides that, there...
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