Editor’s Note: This article was originally posted in August 2010 and has been fully updated for accuracy and comprehensiveness in October 2015.

If you are researching into deploying a VoIP Telephony System on your own for the first time, you are probably seeing FXS and FXO acronyms all over the place.  When you’re new to VoIP and learning it can be very difficult. Hopefully I can help to make a little sense of FXS/FXO for you.

Let’s start with FXS Ports

FXS stands for foreign exchange subscriber.  Since that is so clear and makes so much sense I can stop there right? Not! So clearly the actual meaning of these words isn’t going to help us remember or understand what they mean.

FXS is an …

Do you have questions about VoIP?
Our tech support team here at VoIP Supply offers great pre- and post-sale support plus provisioning, consultations, configuration, and installation help.

We get a lot of VoIP hardware and software questions and realized that these solutions should be shared with everyone. This one is about Grandstream Call Routing.

Here now are our top three (real) questions and answers from this past week (from VoIP users just like you).

Gateway that will allow SIP to outdial over an analog trunk

Q: We install access control systems for condominiums that uses a SIP extension to place calls to residents’ telephone numbers. We need a gateway that will allow SIP to outdial over an analog trunk. What do you have recommend?

A: This can be accomplished with the Grandstream HT503 hybrid Analog Telephone Adapter (ATA) and VoIP router.…

renegadepbx blog banner

We are excited to announce the first ever VoIP Supply branded IP PBX, the RenegadePBX 1U Appliance. At VoIP Supply, we strive to put you, the customer, first. With over 13 years of perfecting your buying experience before, during and after your purchase we wanted to bring this experience to our own appliance.

The choices are all up to you!

In true VoIP Supply fashion, we didn’t want to limit you to only certain choices with your IP PBX. The RenegadePBX allows you to mold the exact appliance needed for your situation.

  • Choose your own open source software platform (installed on your appliance prior to shipment)
  • Connection to the PSTN if needed
  • Choose the SIP trunking provider you would like (our new CloudSpan Marketplace will

Snom M85 Rugged DECT VoIP Handset
Introducing the Snom M85 Ruggedized DECT (wireless) VoIP Handset.

I suppose it’s fitting that when you do a Google search for “M85” you’ll find, as the number one search result, Wikipedia’s description of the well-known “heavy machine gun…that was used primarily for turreted applications in armored fighting vehicles.”

When you want something done, you bring out the big guns.

So it is with the Snom M85.

Just like its unrelated namesake, the M85 is comfortable in tough environments like hard hat zones, the outdoors, and industrial areas. It’s able to withstand the abuse with protective features such as:

  • IP65 rated protective enclosure that is:
    • Shockproof
    • Splash-proof
    • Dust-proof
    • Operational in temperatures ranging from 5°F to 131°F (-15° and +55° Celsius)

Durability + Convenience

If you …

Invoxia One Phone Says It All 5
BYOD, the trend of bringing your own device (laptop, tablet, phone, etc) to your place of employment has now expanded to VoIP connectivity.

French manufacturer Invoxia is making it simple to deploy BYOD VoIP with their line of attractive base units that can turn a smartphone or a VoIP app on a tablet into a desktop VoIP phone with:

  • HD Speakerphone
  • Headset Port
  • Corded Handset
  • and Charging Station


VoIP Supply has been the leading hardware supplier for over 13 years and has truly perfected the buying experience for our customers. We knew we were missing a piece of the puzzle and we have expanded our team to fill the gap for our customers. We are now able to offer you VoIP Service!

CloudSpan Marketplace

We would like to officially introduce to you the CloudSpan Marketplace. “The Marketplace is a single place to shop various cloud service offerings, in order to find the perfect match for their business’s size and needs,” said Wes Mathews, Director of Cloud Services.


Here are a few of the benefits when working with the CloudSpan Marketplace:

  • Dedicated VoIP Solutions Specialists at your fingertips
  • Service Providers

We Are VoIP Supply Banner

VoIP Supply is continually growing and striving to make the customer experience better. We wanted to share with you our newest addition to our customer satisfaction tool kit.

The Customer Always Comes First

We have created an interactive demo lab for use by our sales team, tech support team and any customers who would like to visit. We have all types of equipment in our lab from VoIP Headsets, VoIP Phones, IP Paging equipment and also multiple types of IP PBX Appliances.

Check out the video created by our new Video Production Manager, Stephen Lopian.

Our custom tech table was built locally specifically for our Interactive Lab at VoIP Supply.

Tech Support can troubleshoot better than ever

It is great for …

VoIP Supply Q and A

Our tech support team here at VoIP Supply offers great pre- and post-sale support plus provisioning, consultations, and configuration and installation help.

We get a lot of VoIP hardware and software questions and realized that these solutions should be shared with everyone.

Here now are our top real questions and answers from this past week (from VoIP users just like you).

ruckus qa

Q: What is the range of the Ruckus ZoneFlex T300 Outdoor Wireless Access Point? Does it come with software or do I need to purchase software separately? How many users can it support? Does the T300 support IPTV streams?

A:  The Ruckus ZoneFlex T300 Outdoor Wireless Access Point offers dual-band 802.11ac and is rated IP-67 for outdoor environments. The T300 is specifically …

How to solve problems with VoIP
When you’re in the market for a new VoIP system there are many questions that need to be answered, starting with:

  • Would you like to go with hosted service or an on premise system?
  • What software platform would you like?
  • What kinds of features do you need?
  • Does every employee need a desk phone or, can they use softphones?

And depending on where you are in the process, you may not even know what some of these things are.

We Can Help

Here at VoIP Supply we are here to help with plenty of:

  • Learning documents,
  • Case studies,
  • And our one-of-a-kind sales staff with knowledge on all types of systems and deployments.

Case Studies

I would like to share a case study with you that …

Image Courtesy of Jokideo Jokes and Pictures

At VoIP Supply, we are constantly expanding our product catalog to make sure we are able to fulfill all of our customers needs.

When we were researching Wi-Fi infrastructure, Ruckus Wireless was an easy choice.

I had the pleasure to discuss Ruckus Wireless with David Callisch, VP of Corporate Marketing, over at Ruckus Wireless.

He was able to shed light on different deployments for Ruckus, new products, and recent Ruckus partnerships. What follows is my interview with him. Enjoy!

VoIP Supply: For folks who are unfamiliar with Ruckus Wireless, tell us about your company?

David Callisch: Ruckus is now the world’s largest independent supplier of advanced Wi-Fi systems for enterprises and carriers around the globe. Headquartered in Sunnyvale, California, the company currently operates in …