Primary Rate Interface (PRI) - PrimePlex and PrimeConnect

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AT&T PrimePlex and PrimeConnect are ISDN PRI local service offerings.  Available in select cities nationally, AT&T Prime services give you an efficient way to integrate your local voice, data and video communications on the same high-performance digital trunks using industry-standard ISDN Primary Rate Interface technology. This all-digital service connects your digital PBX (or other digital premises equipment) directly to the AT&T Network over ISDN-configured T1 facilities you can use for virtually any combination of voice, video, or switched data transmissions. You don't have to designate certain channels for each type of transmission; your bandwidth is allocated automatically on a call-by-call basis.

Availability

AT&T offers ISDN PRI service within AT&T's twenty-two state local operating areas and in select cities nationally.

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AT&T's state-of-the-art ISDN PRI Local Services include:

• PrimePlex, an ISDN PRI service designed for locations needing dependable connectivity for local and local toll calls, long distance and international voice, as well as video and switched data services. It supports inbound and outbound calling, as well as access to toll-free service.
• PrimeConnect, a specialized ISDN-based PRI trunking solution, designed especially for applications and locations receiving very high volumes (200,000 to 400,000 minutes per month) of inbound-only traffic.

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With AT&T PrimePlex and PrimeConnect, you'll enjoy a feature-rich service.

• Provides dependable connectivity for local and toll calls, long distance, international voice, video and switched data services
• Runs on standards-based ISDN-configured digital T1
• Dynamic call allocation
• Supports inbound and outbound calling as well as access to toll-free service
• Optional back-up signaling channel to improve reliability
• Online tools for analyzing trunk utilization
• Clear Channel Signaling provides full 64K per channel and the capability to combine channels for greater bandwidth applications

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With AT&T PrimePlex and PrimeConnect, you will enjoy the following benefits:

• Clear calls and 99.99% uptime thanks to 100% digital connectivity and AT&T's industry-leading 24-hour network monitoring and management
• Make sure your callers can get through by virtually eliminating busy signals with AT&T PrimeConnect's 1:1 trunking ratio
• Improve your callers experience and your efficiency with faster set-up times inherent in ISDN signaling
• Flexible trunk configuration options tailored to meet your mix of inbound and outbound traffic
• More efficient use of T1 bandwidth by integrating local voice, video, and switched data and by dynamic call allocation which can reduce the need for additional circuits
• Help reduce costs by purchasing as part of the AT&T Business Network where spend on eligible local services contribute to your overall annual commitment and enjoy favorable loyalty rates for local toll and long distance calls
• Improve reliability by using an optional back-up D channel which can perform signaling function should the primary D channel fail

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• Centrex

Do you need a local voice service that provides state-of-the-art, central office-based networking for voice and data that won't break the bank? Then AT&T Centrex could be a viable option for you.

• Primary Rate ISDN (PRI)

Move calls and information faster and more efficiently with a single digital connection. AT&T offers this service within our regional service areas.