Saturday, October 25, 2008

One thing I have found is that VoIP phone lines can make or break an install for 3CX. You can have the most well thought out 3CX deployment: great hardware, great phones, great software, great design.....but add in VoIP lines and if the end user hears jitter or garbage, the whole install is deemed a failure.

The issue with VoIP service is that there is so much happening between your 3CX box and the ITSP (Internet Telephony Service Provider) that you have chosen, that its practicaly on a whim and a prayer that you get good call quality. The provider can have a great might implement QoS on your edge router, but you can't control whats between you and them.

The kicker of course, is that there is such a cost savings for SMBs (Small / Midsized Businesses) to use VoIP lines that it is extremely tempting and frankly, much more flexible than POTs and PRI.

I have spent some time in my firms home area and have been able to identify at least one privately owned ISP (which is easier to deal with than some goliath like ATT) that is not only an ISP but also provides VoIP trunks. But, to go further than that, they maintain their own physical connections to the PSTN (Public Switched Telephone Network). So they are a true ITSP NOT a wholesaler shipping your traffic to another provider.

What does this mean? It means that if they are the customers ISP....and also the VoIP dial tone provider....that the customers Outbound/Inbound VoIP traffic jumps directly to their upstream ISP and is placed onto the PSTN. As well, you have 1 provider who controls the end to end for both internet and voice on a single pipe.


  1. Drastically improved call quality for a VoIP provider
  2. Single vendor for voice and internet service
  3. Cost advantage because the vendor is delivering 2 services bundled rather than buying these 2 services from seperate vendors
  4. Much improved engineering support from the ISP since they are not a goliath


Well, I am NOT AT ALL saying that the ITSP only companies out there are not good. That is not my point. What I am suggesting, is that there is too much happening between the customer and the ITSP to be able to ensure call quality and hence a happy end user. Furthermore, I am suggesting that localized ISPs, that can also act as an ITSP (and when I say this I mean they have physical PSTN connections in-house and are not shipping the VoIP traffic to some wholesaler) can offer some great benefits as well as more reliable call quality.

Just some thoughts to consider.

Happy 3Xing!!!



PS - Don't forget about our upcoming 3CXtreme training. Its going to be a lot of fun! We have a good venue and we're going to have a great small group of individuals who really want to dig in to the 3CX product.

So dont forget to sign up!