Tag: cisco

GNS3. Basic Installation.

Introduction This post gives an overview of GNS3 software and shows how to install it. It is a part of GNS3 Tutorial series. What is GNS3? GNS3 is a free network emulation software with GUI that can be used to run real network OS (for example, Cisco IOS) images, and build various network topologies in

Cisco CME and “SIP/2.0 488 Not Acceptable Here”

Introduction I have recently had a strange issue with call transfers on CME 12.0. I was getting “SIP/2.0 488 Not Acceptable Here” from ISP while trying to transfer a call from PSTN to another extension. Let’s see how we can solve this problem and make the transfer work. Equipment Used The phone I used was

How to capture traffic on Cisco ISR 4000 ?

Introduction In this article we will see how we can capture and export network traffic on a Cisco ISR 4331. The provided instructions are applicable to any Cisco ISR 4000 series router. The exported traffic has a pcap file format and therefore can be easily opened and analyzed in Wireshark. The ISR 4331 used in

Load SIP Firmware to Cisco 7900 IP Phones.

Introduction In this post we will learn how to upload SIP firmware to Cisco 7911 IP Phone. This will make possible using the phone with third party SIP servers. The instruction below applies to all Cisco 7900 series IP phones. Step 1. Download the SIP firmware. Before we start, let’s download the required SIP firmware

Cisco IP Phone “Host Not Found” error.

Introduction This post explains why you are getting “Host Not Found” error on your newly registered IP phone’s display and how to fix it. Why “Host Not Found” error? The reason you are getting this error is that when you autoregister a brand new IP phone, it attempts to take you through the self-provision wizard,

Cisco UCCX 11.5 Basic IVR Application

Introduction In this post we will create a basic IVR application on Cisco UCCX 11.5 server. Our application will play out the greeting to the caller and allow him to enter the extension number or wait for being transferred to the operator. Prerequisites Before you go through this tutorial you should have a working UCCX

Cisco UCCX 11.5 + CUCM 11.5 Integration

Introduction In this article we will go through the integration process of UCCX (Cisco Unified Contact Center Express) 11.5 with CUCM (Cisco Unified Communications Manager) 11.5. The process will be similar for other software versions as well. CUCM side: 1. Enable AXL Web Service on CUCM Go to Cisco Unified Serviceability -> Service activation and

How to run Cisco router as a virtual machine?

Introduction In this post we will learn how to install and run Cisco router as a virtual machine. Cisco has a special product called CSR (Cloud Services Router) 1000v for deploying routers as virtual machines. You can use these VMs for testing and learning purposes. Cisco supports all popular cloud and virtualization platforms, but I

How to configure Native Call Queuing in CUCM ?

Introduction In this post we will go through the process of configuring Native Call Queuing in Cisco Unified Communications Manager 11.5. This allows us to have basic call queuing functionality with periodic announcements without implementing Cisco Contact Center Express/Enterprise. How to configure native call queuing? Below are the required steps to get Native Call queuing