Primary Rate ISDN (PRI)

PTCL’s Primary Rate ISDN (PRI) provides virtually unlimited number of ‘pairs’ at customer’s office which grow as your business grows. We provide 30 lines or any multiple of 30 lines and then connect you in no time.

The service uses the public telephone network to carry an all-digital signal that can satisfy your voice and data communications needs in the most efficient and flexible way possible.

This gives you 30-40% greater efficiency than traditional analog service. Fewer connections are required and call connection is rapid thus saving customers time and money. PTCL’s PRI service is ideal for enterprises that require simultaneous transmission of voice, data and video as well as cost effectivity.


Basic Rate Interface

Basic Rate Interface (BRI) is a powerful tool for provisioning of different services like voice, data and image transmission over the telephone line through the telephone network. Based on ISDN technology, it is being viewed as the logical extension of the digitalization of telecommunication network.

PTCL’s BRI is a digital access technology uses standard twisted pair cables and is nearly three times faster than a 56Kbps dial-up line.  It also provides high quality of digital transmission and high speed data interfaces. 




  • A combination of voice and data communications with scalability.
  • Re-allocation of capacity at any time.
  • Expect 1.54 Mbps of capacity.



  • Cost Effective.
  • Dual Communication (Data & Voice).
  • Save travel time with virtual meetings using videoconferencing.
  • Good option for backup connectivity.


How to Buy

To order please contact or call 111-20-20-20