Virtual PRI - Wiki

Virtual PRI

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First, a vPRI is a virtual PRI, that's not including a specific amount of "channel" like traditional PRI, that’s usually composed of 23 channels and 1 data channel managing the exchange of information.

With a vPRI the amount is determined by how much concurrent incoming calls you need. You can add more than one DID, in your vPRI, in that way, they will share the same pool of incoming channels.

The value of a vPRI will allow you to pay per channels, instead of an incoming pay-per-use/per minute billings.

Also, the difference between a PRI and a vPRI with is only for the incoming calls traffic, it means that for all outbound calls will be at your rates/minutes. If you have a high volume of outgoing calls, we can surely explore with you the better rates per minute.




The vPRI is limited to the local DIDs only, which means a toll-free number cannot be added to a vPRI.

Moreover, if you have some DIDs from the US and some DIDs from CDN for example, they cannot be merged together.

In this case, two different vPRI will be needed, one for all your CDN DIDs, another for all US DIDs. You can only have one vPRI per country as long as there are locals DID is available.

The price of the channels, considering volume discounts, will be applied to the total amount of channels per country.

The Concept of “Bursting”, or On Demand.

We all know with a regular PRI, that if you reach the number of your concurrent channels, you will be unreachable, and your customer will hear a congestion tone (the famous busy tone).

It is now that the concept of “bursting” comes into place. It’s interesting that we offer you the opportunity to go beyond your limit!

Your customer will never hear the famous busy tone due to reaching your concurrent call limits.

How it's work - Scenario

Let’s pretend that in normal time, your organization requires an average of 50 inbound concurrent calls for a couple of DID. Instead of having a per minute incoming rate for each DID, you can have a fixed monthly price for those channels.

When the eventuality of receiving a peak of calls at the same time occurs, instead of having a busy signal and risking missing an important call, we give you the flexibility to receive more than 50 inbound channels at the same time. For safety, you can choose up to how many channels you want to be able to burst. Let’s say you decide to allow your vPRI to burst until 100 calls, and you would simply get charged a small premium for the additional channels used over your original limit.

We charge on a pay-per-use model where if you use 10 extra channels only for 1 day in a given month, we won’t charge you the channels for the entire month, but rather only for this specific busy day.

How can I have a vPRI?

You just need to contact us and provide us the number of channels you need, and which DIDs you want to link to it.

In this way, we will be able to provide a better price.

If you already use our service and you want to switch to a vPRI, the transition is smooth and without downtime.

No reconfiguration on your side is needed.

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