UC Toolkit: Using Switch for Bulk Audio File Conversion Cisco UC

William Bell
Vice President, Solutions and Products


Switch Sound File Converter (Switch) is an audio file conversion utility from NCH Software. There is a free trial version of the software available. You can also purchase a full feature license. I found that I only need the free version for my menial tasks. They do have versions that run on Mac and Windows. I have both installed but I have had to rely on the Windows version for use with Cisco audio file formats. I can’t specify CCIT u-law format in the Mac trial version. On Windows I have used version 2.0(3) and on Mac I have used version 4.0(6).

This blog is based on the Windows version 2.0(3).

Using Switch to Bulk Convert Prompt Files

Switch is a handy tool that I use primarily for bulk conversions. The free version I have on Mac OS X is actually unable to convert to the format needed by UCCX. So, I have to use the free version on Windows (which I run in VMware Fusion). To convert a group of files, launch the Switch application. Click on the Add Files button in the toolbar and navigate to where you have your source files saved. Select the file(s) you want to add to the project (you can multi-select).

Figure 1. Selecting Files to Convert

Set the Output Folder to a separate folder on your system. In our example (above) we use “c:emppromptsconverted”. Next, set the Output format to “.wav” and click on Encoder Options. In the “Encoder Options” dialog, set the Format to “CCITT U-Law” and the Attributes to “8.000 kHz, 8 Bit, Mono”. Click on OK to save the encoder options.

Figure 2. Setting Encoder Options and File Format

Now click on the Convert command button.

Figure 3. Execute Conversion

Checking File Formats

As an aside, you can check files to ensure they are using the proper format for UCCX. In Windows Explorer you can right-click on the file and choose Properties. Then click on summary. See the figure below for two examples. The file on the right has the appropriate settings for UCCX. [NOTE: Get Info on OS X doesn’t show the same level of detail.]

Figure 4. File Property Comparison

William Bell is the Collaboration Practice Lead for Chesapeake NetCraftsmen. Bill has over 10 years of experience in the IT industry with a focus on communication and collaboration technologies. In addition to blogging on the NetCraftsmen site, Bill also maintains the UC Guerrilla blog: http://ucguerrilla.com. You can follow Bill on Twitter: @ucguerrilla

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Nick Kelly

Cybersecurity Engineer, Cisco

Nick has over 20 years of experience in Security Operations and Security Sales. He is an avid student of cybersecurity and regularly engages with the Infosec community at events like BSides, RVASec, Derbycon and more. The son of an FBI forensics director, Nick holds a B.S. in Criminal Justice and is one of Cisco’s Fire Jumper Elite members. When he’s not working, he writes cyberpunk and punches aliens on his Playstation.


Virgilio “BONG” dela Cruz Jr.

CCDP, CCNA V, CCNP, Cisco IPS Express Security for AM/EE
Field Solutions Architect, Tech Data

Virgilio “Bong” has sixteen years of professional experience in IT industry from academe, technical and customer support, pre-sales, post sales, project management, training and enablement. He has worked in Cisco Technical Assistance Center (TAC) as a member of the WAN and LAN Switching team. Bong now works for Tech Data as the Field Solutions Architect with a focus on Cisco Security and holds a few Cisco certifications including Fire Jumper Elite.


John Cavanaugh

CCIE #1066, CCDE #20070002, CCAr
Chief Technology Officer, Practice Lead Security Services, NetCraftsmen

John is our CTO and the practice lead for a talented team of consultants focused on designing and delivering scalable and secure infrastructure solutions to customers across multiple industry verticals and technologies. Previously he has held several positions including Executive Director/Chief Architect for Global Network Services at JPMorgan Chase. In that capacity, he led a team managing network architecture and services.  Prior to his role at JPMorgan Chase, John was a Distinguished Engineer at Cisco working across a number of verticals including Higher Education, Finance, Retail, Government, and Health Care.

He is an expert in working with groups to identify business needs, and align technology strategies to enable business strategies, building in agility and scalability to allow for future changes. John is experienced in the architecture and design of highly available, secure, network infrastructure and data centers, and has worked on projects worldwide. He has worked in both the business and regulatory environments for the design and deployment of complex IT infrastructures.