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Technical Requirements in ContactNow

To look at the technical specs for your computer, before installing the dialer, navigate to Properties under “This PC.” Learn more here.

It is important that you plan the setup of your dialer before implementation. Below you will find the minimum and recommended technical specs for parts of your computers, such as Processor, Hard Drive space, and the supported operating systems.

ContactNow is a business grade application and as such needs to be run and connected via business grade hardware. We would therefore neither recommend nor support customers who try to connect using home hardware such as tablets and Chromebooks.

If you are unsure of what your specifications are, follow these steps:

For PC:

  1. Click Start.
  2. Type "This PC".
  3. Right-click the icon and select Properties.
    • This will open your System settings found on your Control Panel (Control Panel > System & Security > System).

For Mac:

  1. Click the Apple Icon (top left corner of the screen).
  2. From this menu, click About This Mac.
    • This will open the System Information Window to display your specifications.

PC/Mac Technical Requirements and Recommendations


  • Minimum: Core 2 Duo 2.1 GHz.
  • Recommended: i5 / i7 2.4 GHz, and above.


  • Minimum: 2GB RAM.
  • Recommended: 4GB RAM, and above.

Hard Disk Space

  • 400 MB, and above.

ContactNow is Cloud-based and you will need to download an internet browser and potentially a 3rd party softphone such as Zoiper or X-Lite.

Operating System

  • Microsoft Windows 7 / 8 / 8.1 / 10
  • Mac OS X 10.10 (Yosemite) or 10.11 (El Capitan).

Network Requirements

  • Minimum: Dedicated 0.5MB Upload & Download speed.
  • Ideal: Dedicated 1MB Upload & Download Speed.

We suggest the recommended upload and download speeds per agent in order to prevent any bottlenecking (dropping of traffic) when the number of agents logged in increases. You can check your current download and upload speed by using any popular speed test websites. It would be worth checking at different times of day as network usage will more than likely vary during the day. It is also worth considering that even if you theoretically have enough bandwidth but have someone streaming video content, such as YouTube or movies, then you are effectively cutting out bandwidth available to the dialer and this will cause issues. If the router is yours you will be able to change QOS (Quality of Service) settings in order to give 100% priority to our IP addresses which we can provide to you. This would give priority to the dialer.


Note: These are recommendations PER AGENT and not across your entire network. For example, a team of 10 agents will not be able to operate efficiently on a network that is only providing 1MB Upload and Download, especially if other operations are happening as well (email sending/receiving, server usage, general internet use elsewhere on the network).

Wi-Fi (not recommended)

We recommend that the laptop or computer be hard wired (with an ethernet cable) to the internet in order to get the best possible connection. ContactNow is a complex platform and needs to have a solid and uninterrupted connection in order to operate effectively and efficiently. A wireless connection will be affected by your surroundings and other variables and as such can be unstable and interrupted. We neither recommend nor support connection via wireless connections.

Router and Ports

We are aware that some of our customers try to connect more than one agent via their home broadband router which is neither recommended nor supported. We have also identified a number of issues for some customers who are operating from shared office spaces with a shared internet connection.

If you do not have access to your own router it is highly likely that you will experience issues trying to run ContactNow as you have no control whatsoever over how/when the broadband will be used or even if there is enough to effectively service all users all of the time.


  • Prioritize traffic to and from ports 5060/5061 (VoIP).
  • Allow traffic through ports 10000 to 20000 (minimum) for UDP traffic.


Allow traffic to and from the following IP addresses:


This will allow traffic for all 254 IP addresses that ContactNow may use.


Please ensure SIP ALG is disabled; if enabled it can cause significant issues with SIP connections. For example, disconnecting agents from the dialer every 8 minutes (due to failed SIP keep alive's).

If you require more assistance visit our support website and search for the appropriate articles, or you can contact our Support team if you are unable to find what you are looking for.


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