Voice LAB


Cisco IP Communicator (CIPC) requires a sound card be installed on a PC in order to install or open. Under normal circumstances, this completely makes sense. However, in other circumstances (demos/labs), PCs are actually virtual machines … and do not have sound cards. In these situations, the engineers/trainers/etc are more concerned with dialing than actually hearing audio.

 

In order to use CIPC in a virtual machine, install Virtual Audio Streaming – a virtual sound card tool from ShiningMorning.com prior to installing CIPC. This software will install virtual audio drivers on your VM which allow CIPC to install and have dialing capabilities. Unfortunately, CIPC will still only allow one instance to run at a time…unlike IP Blue. I have tested this with VMWare ESXi but it may also work with other VMWare products.
 
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This tutorial will show you how to create or convert an existing audio file and save it in CCITT u-law – 8KHz 8bit Mono format for use in Cisco Unified Call Manager Express (CUCME), Cisco Unified Contact Center (UCCX) or Cisco Unity Express (CUE). This has always been an easy task with the Windows Sound Recorder that came with Windows XP. However, the sound recorder that comes with Windows 7 does not work the same.
 
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This tutorial is a continuation of the virtual voice lab series. In this tutorial, you will add a dial-plan to the PSTN router that was added in the first part of the PSTN simulation lab. (more…)


This tutorial is a continuation of the virtual voice lab series. Unfortunately, the virtual voice lab has been a “work in progress” much longer than I had hoped it would be when I started it two years ago. In this tutorial, you will add a new router to your GNS3 topology. It will connect it to the HQ, BR1 and BR2 routers to simulate an Internet connection and the Public Switched Telephone Network (PSTN).

 

There is one caveat to this PSTN simulation… GNS3/Dynamips is not capable of simulating traditional analog or digital circuits. We will be simulating an Internet Telephony Service provider (ITSP). ITSPs have become increasingly popular in the past ~5 years. Basically, the PSTN router will route incoming calls to the branch routers and received outgoing calls from the branch routers over a SIP or H323 trunk.
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Adding a custom background image to a Cisco IP Phone can be tricky. You can use Cisco Phone Designer or you can use the following instructions to upload backgrounds to the dedicated servers so the users can choose a background from the phone.
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This short post demonstrates using ‘ip sla’ and  freedns.afraid.org for dynamic dns.

 

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I just wanted to take a minute to post links to a site that were very helpful to me last week. At my job, I rarely use UCCX(IPCC). The extent of my UCCX experience is scratching my way through the documentation enough to use it for TAPs and thats it. I installed it again recently for an install but instead of fumbling through the documentation, I went to blogsearch.google.com and found Alex Hannah’s site: UCCX.net. Below are links to a few of his video tutorials that were very helpful. Thanks Alex!

 

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In this tutorial, you will learn how to use the Cisco IP Services SDK to search Microsoft Active Directory without having to integrate Unified Communications Manager with LDAP. This can be useful if you have a multi-tennant environment or if you want to use an existing Active Directory database as an additional directory. 

 
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In this tutorial, you will learn a couple ways to connect a physical router to your home phone line as part of your “virtual voice lab “.  An all virtual voice lab would be ideal. However, real hardware is necessary for a more complete voice lab. I will be using a 2611XM for my home lab, but you can use just about any Cisco router with a couple fxs and fxo ports.

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In this tutorial, you will add a virtual machine for Ethernet connectivity to branch1 and branch2 of your virtual voice lab. Although I use a separate vm in this tutorial, you can also simply add two more interfaces to the headquarters virtual PC if you are running short on PC resources.

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