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V1 VoIP Explains Difference Between SIP Trunking and PRI

Posted on: September 28, 2017

V1 VoIP offers both SIP Trunking and Virtual PRI to our resellers and wholesalers. But what are these VoIP services and how do they differ from each other. Here, V1 VoIP will explain what each one is, how they differ and which one can be more beneficial for your business.

What is Virtual PRI?
PRI stands for Primary Rate Interface, and it is a physical connection between your business and the PSTN. V1 VoIP offers Virtual PRI, a circuit-switched technology, which means that a physical path is reserved for the entire duration of a certain connection between two end points and no other data can be sent along this path while it is in use.

What is SIP trunking?
SIP trunking is also commonly referred to as VoIP termination and represent a packet-switched technology. SIP stands for Session Initiation Protocol and is the V1 VoIP service that allows you to send calls through a carrier’s network. A packet-switched technology means that small units of data – packets – are sent through the network and do not prevent other packets from entering the channel at the same time.

What are the main differences between the two?
SIP trunking is a versatile technology which can be aligned with your specific business needs. Its capacity is dependant only on the amount of bandwidth available and can be extended to accommodate an unlimited number of connections. Extra capacity can be easily purchased by phone and will take only a couple of hours to set up. SIP trunks are also not stagnant. If they are not used, the corresponding bandwidth can be applied for other purposes.

PRI usage is related to high costs as they are charged per circuit on a monthly basis. Installation of every line takes time and can be on the expensive side. While the line is not in use, it cannot be applied for other purposes. Moreover, it is capable of carrying only voice data. A PRI is a physical telephone line which enables you to have 23 or 32 simultaneous calls respectively. Even with 50 phone numbers, a business will only be able to have a pre-defined number of connections at the same time. If your call volume is larger and you face the need to increase the capacity, you will have to purchase an additional phone lines with 23 or 32 more channels. Even if you need only 1 channel more, it will still require an entire new line.

While PRIs have their benefits such as a guaranteed call quality, they’re a thing of the past now. We do offer Virtual PRIs, however, we recommend our resellers use SIP Trunking for their business customer needs. Contact V1 VoIP now to take advantage of our SIP trunking services and ask about our wholesale pricing.

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