Category Archives: SIP

SIP over the Internet is “risky”?!?

Recently, we were in the process of moving a customer from T1 to SIP Trunking (over the Internet) when a certain “FORTUNE 500” provider of voice and data network communications stepped in and tried to convince the customer that “SIP over the Internet is “risky”.”

So, the customer decided to test things out for themselves.

They ordered SIP Trunks from our preferred provider, nexVortex. They routed these over their Cox fiber Internet connection.

They also ordered SIP Trunking and 10 Mbps of connectivity from said “FORTUNE 500” provider of voice and data network communications. (Remember, this is supposed to be 10 Mbps of connectivity that is better than anything else, because it is manged by a “FORTUNE 500” carrier.)

So, they let the testing begin. I think the pictures below speak for themselves.


nexVortex SIP Trunking on customer’s Internet router (10 Mb fiber) = 13ms
“FORTUNE 500” carrier with their own router (10Mb fiber) = 46ms

Would you like to guess which is providing the customer with better quality? You guessed it: SIP over the Internet.
Would you like to guess which the customer is paying a lot less for? You guessed it: SIP over the Internet.

If you are interested in learning more about how we are providing people with thousands in monthly cost savings by moving them to SIP over the Internet, please call (804) 798-4444 Option 2 or email

Business, not just technology, is important

This past weekend, I met the owner of an Investment Advisory firm.  While talking to him, he mentioned the brand of VoIP phone system that he had purchased for his company.  I found it very ironic that the owner of an Investment Advisory firm had purchased a phone system from a manufacturer that has yet to show a profit in 14 years of existence.  To top it off, this phone system is based on proprietary technology.  You can imagine the look on his face when I told him about this.

In CBSi’s almost 25 year history, we have resold many technology products.  When we evaluate prospective vendors, we always make sure that they have good technology – reliability, scalability, standards-based, and appear financially solvent.

However, as my story above points out, financial stability (not just technology) is important to our customers.  CBSi goes the extra mile and does research on the financial viability of our prospective vendors.  We invest this time and effort so that our customers buy a product that will be there to service their business for a period of time.

If a slick sales guy lands in your office and tries to sell you something like the phone system mentioned above, please call (804) 798-4444 Option 2 or email  We would love to guide your business to purchase a system that has both great technology and is financially stable.

disconnecting networks from the “bad parts” of the Internet

For years, CBSi has been connecting enterprise networks to the Internet.  As you likely realize, Internet connectivity is a requirement for almost every business to function today.  Unfortunately, there are a lot of “bad guys” on the Internet trying to do a lot of bad things to enterprise networks.  Just read up on botnetshackers, keyloggers, spyware, Trojansviruses, zombies, etc.

A long time ago, we decided that it was best to start disconnecting enterprise networks from the “bad parts” of the Internet.  Our original approach was to block the most problematic countries.  Our internal list was known as the “dirty dozen” country list.  Maintaining this list became a full-time job.  Often times, we had to call in a geopolitical specialist to determine if a country should be considered hostile.  This approach was not scalable so we started looking for new solutions.

After much research, CBSi decided that partnering with ThreatSTOP was the best approach.  This partnership provides a number of benefits to our joint customers:

  1. We can block “bad” countries with a single mouse click.  For example, if your business doesn’t need to do business with China, we can simply drop all packets from and to China.
  2. We can keep track of the geopolitical posture of all countries.  For example, we can drop all packets from and to all ITAR countries with a single mouse click.  Of course, we can also do this for all OFAC countries, etc.
  3. We maintain a reputation database down to the IP level.  So, our customers can block all traffic from and to hostile sources, such as botnet command-and-control (C&C) servers, as well.
  4. We maintain application-specific reputation databases.  Our customers can block all IP addresses that are seen initiating SIP attacks, etc.
  5. Because our customers are dropping these packets, they can get more performance from their other security devices (firewalls, intrusion prevention systems, etc.) as the devices are not busy processing known hostile traffic.

If you are interested in disconnecting your enterprise networks from the “bad parts” of the Internet, please call (804) 798-4444 Option 2 or email