The Primary Rate Interface (PRI) used to be the industry standard for providing telecommunication services to businesses. Delivered over copper, this solution is slowly being replaced by SIP trunking and the Internet Protocol. Carriers sold millions of PRIs worldwide during the 90’s before the Internet Protocol became a ‘thing’.
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If you’re unfamiliar with the telecommunications world, Primary Rate Interface solutions may be confusing, but our experts here at Internet Nerdz are here to help. Regardless of your SMB needs, we will match you with one of our 200+ providers to ensure your ship sails smoothly all day, everyday.
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123Net
Get the most out of your PBX telephone system with Dynamic Primary Rate Interface (PRI) Trunking from 123Net. Their cloud-based voice and data service works with your current equipment, giving you more control over calls. With 123Net Dynamic PRI Trunking service, you can manage your business better without an expensive equipment upgrade. Eliminate billing surprises with a fixed long distance rate. Save money through dynamic allocation, which allows your voice and data lines to share the same bandwidth. 123Net will ensure their Dynamic PRI Trunking service works with our worry-free installation. 123Net provides a managed installation process and a local presence with our 24/7 tech support.
CenturyLink
CenturyLink ISDN PRI is a switched digital service that transfers information over the public switched telephone network via a 4-wire physical network configuration, with a full duplex transmission path between either your end-user’s Customer Provided Equipment (CPE) an Interexchange Carrier (IXC) Point of Presence (POP) or your Collocation space. Deployment of ISDN PRI requires that the end-user has ISDN-compatible Customer Provided Equipment (CPE). ISDN PRI is provided on a Digital Service Level 1 (DS1) facility that is multiplexed into 24 channels in various configurations of In-only, Out-only and 2-way dialing. The basic service consists of 23 B Channels and a D Channel with a transmission rate of 1.544 Megabits per second (Mbps). Each B Channel carries user information and the D-Channel is used for signaling. The channel configuration is commonly referred to as 23B+D. ISDN PRI service is provisioned from the trunk side of the switch. No custom calling features are available because custom calling features are designed to work on the line side of the switch. The B channels can be used to transmit:
The following voice type services can ride over a B channel:
Other Providers
Other PRI providers include: One Voice Inc, Verizon, Savvis, Allegiance Telecom
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