What are the minimum bandwidth requirements to use a Jazinga Cloud appliance?

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How much bandwidth is requirement to effectively use the Jazinga Cloud appliance? Is there a recommended connection type (ie. cable, DSL, fiber)?
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Alex Robar, Support and Community Manager

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Posted 4 years ago

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Photo of Alex Robar

Alex Robar, Support and Community Manager

  • 77 Posts
  • 1 Reply Like
How much bandwidth is required will depend on your particular usage scenario. However, the guidelines below should help you adequately predict how much bandwidth you will require. Most Internet Service Providers (ISPs) measure bandwidth in megabits per second (mbps). Some provide slower speeds in kilobits per second (kbps). We will provide speed measurements in mbps. To convert to kbps, multiply the mbps value by 1024 (for example, 0.1mbps = 0.1 x 1024 = 102.4kbps).

For phones on the same network as the Jazinga Cloud appliance (local phones): 1 active call is roughly equal to 0.1mbps of download traffic and 0.1mbps of upload traffic (as you are receiving/downloading an audio stream to hear the call, and sending/uploading an audio stream to send what are you saying to the other person on the call). Each active call will consume about 0.1mbps of bandwidth from your internet connection in each direction. If you were to have 12 active calls, this would be equivalent to using 1.2mbps of bandwidth in each direction.

It is important to understand that bandwidth is being both send and received. Most ISPs provide large amounts of download bandwidth, but much smaller upload bandwidths. You will always be limited by the slower speed. For example, if your ISP supplies you with a connection that has 20mbps of download bandwidth, but only 0.7mbps of upload bandwidth, then you must perform your calculations on 0.7mbps of bandwidth (meaning you are limited to about 7 active calls).

For phones that are remote from the Jazinga Cloud appliance: Remote phones follow the same rules as local phones, except that they use twice as much bandwidth. A remote phone will use 0.2mbps of bandwidth in each direction for an active call. This is because a call to a remote phone has to come in from the provider to your appliance (using 0.1mbps of bandwidth) and then be sent back out over the internet to the remote phone (using another 0.1mbps of bandwidth).

Remote phones can quickly overwhelm the upload capacity of an internet connection. A connection with 1mbps of upload bandwidth can only support 5 active calls to remote phones.

Keep in mind that remote phone bandwidth should be thought of as an "or", when comparing numbers to local phones. For example, a 1mbps connection can support 10 calls from local phones, or 5 calls from remote phones (it cannot support 15 active calls). These numbers can be calculated based on your requirements - 4 calls from local phones and 2 calls from remote phones still only equals 0.8mbps, and should not be a problem on a 1mbps connection.