T1 PRI Phone Lines

Integrated Services Digital Network (ISDN) PRI is a standard, all digital technology that gives you simultaneous, integrated voice and data capabilities. ISDN PRI is an ideal solution for growing and large businesses that need a cost-effective solution for clear voice and high-quality data traffic.

ISDN PRI provides:

  • Guaranteed dynamic bandwidth over non-shared lines.
  • Ability to prioritize call demand for each type of traffic (DID, DOD, data and toll-free)
  • A wide range of features at one standard cost.

How PRI Works:
A more sophisticated T1 line configuration is called T1 PRI or Primary Rate Interface. This term comes from ISDN or Integrated Services Digital Network) technology. A PRI line is also channelized into individual telephone lines, but carries 23 simultaneous calls rather than 24. What happened to the other channel? It’s been assigned to be a data channel to serve the 23 bearer or voice channels. All the dialing information is passed through the data channel rather than as touch-tones over the voice channels. That helps make call set up and tear down faster. You’ll experience that as phone calls going through faster. On the receiving end, the data channel accepts Caller ID or ANI information. This can be fed to display units to show who’s calling, or fed to a CTI (Computer Telephone Integration) system so that customer information will pop up on an agent’s screen based on the number of the incoming call.

With ISDN PRI, you can:

  • Use your existing infrastructure to enable all digital, high-speed voice and data applications that increase productivity.
  • Dynamically allocate channels to adapt to changes in traffic patterns and increase trunking efficiency by up to 30%, reducing total trunks required.
  • Leverage advanced features to support call center applications, or to extend the life and value of an existing PBX system, while reducing call set-up and connection time by up to 90%.
  • Cost-effectively connect multiple locations with guaranteed, two-way bandwidth that can carry voice and data, all via the PSTN.
  • Transfer large volumes of data and enhanced voice over instantaneous connections with superior transmission quality and.
  • Implement a cost-effective, robust disaster recovery/back-up solution to protect missioncritical traffic on a wide area network or traditional T-1.

ISDN PRI Features
Whether you need a traditional telephony solution or want to back-up your mission critical networks, Logic Voice ISDN PRI comes with all the features and functionality you need, all for one competitive price. And ISDN PRI is a flexible technology that will fit the size of your business today and can easily grow with you for tomorrow.

  • Call-by-Call Service — Prioritize call demand by setting limits for each traffic type, such as DID, DOD, data, toll free.
  • Calling Line ID / Calling Line ID Blocking — Automatically match calling party information with internal databases (or block this feature).
  • Out-of-Band Signaling — Carry more traffic per line and enhance efficiency by handling all signaling from a separate D channel.
  • Non-Facilities Associated Signaling — Further enhance efficiencies by controlling multiple ISDN PRI lines via one D channel.
  • Back-up D Channel — Add redundancy by using a spare D channel to back-up call signaling for a range of ISDN PRI, frame relay, T1, or other connections.
  • 64 Kbps Clear Channel — Improve transmission and call quality with all digital B channels that handle only traffic.

For more information, please contact your Logic Voice Sales Representative