It is crucial to know the fact that it is important to note that PRI (Primary Rate Interface) and SIP (Session Initiating Protocol) are two possibilities for connecting your company to a local phone network. Both of these options depend upon PBX (Private Branch Exchange) equipment, which is where an exchange of data between your facility or office with the telephone line occurs...
A majority of existing IP PBX or IP-based PBX equipment is able to support both the PRI and SIP Trunking connections either directly or through an adapter. This makes either a cost-effective choice for the majority of businesses.
What's the difference?
When deciding on a plan regarding your business the number of users, as well as concurrent phone calls and the ability to scale up to meet future requirements, are essential factors to take into consideration.
PRI Trunking
A PRI is a single physical connection (traditionally T1) that has the capacity of 23 channels for voice. Today, businesses can choose to include up to 100 telephone numbers connected to a single PRI, however that one PRI Gateway is only able to handle 23 simultaneous phone calls. The PRI is a connection that only supports voice specifically designed for phone transmission. While PRI has its drawbacks, in terms of scalability, it is regarded as a superior voice solution to voice-over IP options.
SIP Trunking
SIP allows businesses to utilize their existing fiber/ethernet connection to provide voice service. Also known as VoIP (Voice via Internet Protocol), SIP connects your existing PBX exchange to the data network. The virtual connection utilizes an underlying model of packet switching that connects voice to voice, and from telephone to data connection, to the local phone lines.
Expanding using PRI
Because every PRI connection can support the possibility of up to 23, simultaneous phone calls any business which requires more calls will need to buy additional PRI lines to be able to handle the number of calls up to 46 and so on.
Growing with SIP Adding the users you want for SIP Trunking is simple. Simply let us know the number of users you require and each one is assigned a virtual connection as well as a specific phone number or extension depending on the needs of your business.
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