Get a detailed scan in real-time on packet loss, jitter, latency, and other factors that might impact the quality of VoIP calls. Once you’ve clicked to start the test, you’ll notice the line quality analysis immediately go to work. Following the completion of the test, you’ll be provided with a complete report, indicating where (if at all) the particular network you utilize might need a boost or modification prior to powering VoIP communications.

The Importance of Testing Your Internet Speed
VoIP uses data packets to digitally transmit calls over the internet. Having the proper internet speed is crucial to the viability of this technology, possibly making or breaking your communication efforts. Generally speaking, the higher your upload speed (which is really what is meant by your Internet connection speed), the more reliably consistent the quality of your VoIP phone calls will be. Depending on your VoIP hardware and configuration, the required internet speeds for your specific VoIP usage may vary. With the results from this test, you can determine whether you have enough speed, will need more, and type of quality you can call quality you can expect.


What is Latency Testing?
Latency can be defined as being the delay between the time data packets composed of voice conversation are sent and when they are received. This usually occurs when there is a lack of bandwidth—or if a user’s network is over capacity. Latency can also occur as a result of distance, router delay, codec delay, and firewall delay. Firewall delay refers to the time it takes for a user’s firewall to inspect the data packets coming in.

Latency ultimately determines how long it will take users to receive packets of information. Measured in milliseconds, the official measurement has been termed as ping time. While this does not have as much of an impact on regular data such as emails or web pages, latency can greatly affect IP phone calls. Users should be sure that they are experiencing minimal latency, or low ping times, to ensure the optimization of their services. Ping time can generally be measured as such:

Excellent: <100ms   |   Good: <250ms   |   Poor: >250ms

For a user to ensure that they are fully optimizing their services, one can administer a latency test. A latency test determines how long it takes to open a connection between the data center and a user’s email server. This test also informs users of how well their network is responding, and/or if the network is underperforming. Typically, this type of test will measure time in intervals of milliseconds, as that is the general measurement used.

Related Reading:
VoIP Codecs + Bandwidth = Your Call Quality
Is Echo Cancellation Limited By Bandwidth?


Why check for firewalls?
A firewall is a system that is designed to prevent unauthorized access to or from a private network. Using hardware, software, or both, firewalls help protect users from unauthorized users accessing private networks connected to the Internet, specifically intranets. In doing so, the firewall examines each message leaving and entering the intranet, and subsequently blocks those that do not meet the specified security data.

The firewall is typically considered to be the first line of defense in protecting users’ private information.Therefore, firewalls must be maintained and kept fully functional at all times. In doing so, users can better ensure network safety. One way of doing this is by administering a Firewall Check. The Firewall check tests a user’s computer for ports that are often left open. When a user’s ports are left open, the computer is much more likely to be compromised. In addition to scanning for open ports, the Firewall Check will also scan for open ports that are commonly known to be used by viruses and Trojans. Aside from scanning specific ports, users can set Firewall Checks to pick a range of ports scan.

Firewall checks also ensure safety and strength by testing categorically:

  • File Sharing Test – checks for common ports that are associated with vulnerable file sharing ports and services.
  • Common Ports Test – examines the ports used by popular (possibly vulnerable) services.
  • All Ports and Services Test – tests every single port from 0 to 1056 to see if they are open, closed, or in stealth mode.
  • Messenger Spam Test – attempts to send a Messenger test message to see if your firewall is blocking this service, which can be exploited and used by spammers to message you.
  • Browser Disclosure Test – not truly a firewall test, this shows what information your browser may be revealing about you and your system.

Essentially, firewalls make a user’s computer nearly impervious to network-based attacks. That being said, it is crucial that users apply any or all firewall checks to ensure that their network is secure.

Related Reading:
VoIP Installation and Security: The Blunders of Inexperience
Password Security and VoIP: Is Enough Too Much?


Importance of Testing for Packet Loss Occurrence
Packet Loss typically occurs when one or more packets of one (or a number of) packets of data traveling across a computer network fail(s) to reach their destination. Packets contain all the information needed for the sending computer to communicate the specified information to the destination. When problems do arise, packet loss occurs. There are a number of reasons behind packet loss. In some instances, the signal may degrade over time. In others, hardware problems could occur. Another factor is too much network demand leading to corrupted packets. When packet loss does occur, computers try to recover the information. If the receiving computer does not receive a signal for each packet sent, it will resend any and all packets it did not receive a signal for.

Related Reading:
How Packet Switching Works
What is Packet Loss?