call center services
  • Go4customer US contact no
  • Go4customer India contact no

What is Integrated Services Digital Network (ISDN)?

Integrated Services Digital Network, which is commonly termed as ISDN, is a set of communication standards for synchronized digital broadcasting of various network services like voice, video and data over the conventional telephone network. Its definition first appeared in the red book by the International Telegraph and Telephone Consultative Committee (CCITT) in 1988. Before ISDN came into existence, the telephone network was seen as a medium to transport voice, with only some services at offer for data. The main characteristic of ISDN is that it incorporates speech and data on same line; thus, adding special features that were not available in the traditional telephone system. The ISDN standards explain various types of access interfaces, like Basic Rate Interface (BRI), Primary Rate Interface (PRI), Narrowband ISDN (N-ISDN) and Broadband ISDN (B-ISDN).

PRI line is a single wire line connection that connects the server in office with the telephone exchange of an organization. Although, PRI is a single line having single number, but it has upto 30 separate channels, which enables connecting 30 distinct telephone sets to one PRI line using an EPBX device; therefore, permits 30 calls simultaneously. Third party vendors that provide call center services use PRI lines.

ISDN is a network system that employs circuit-switched telephone network system. It provides access to packet switched networks, which are usually designed to permit digital transmission of voice and data over conventional telephone wires. As a result, it provides better voice quality than an analog phone.

ISDN provides circuit-switched connections for voice and/or data and packet-switched connections for data in increments of 64 kilobit/s. In recent times, ISDN has found large market application for Internet access. In terms of Internet and bandwidth, ISDN can provide a maximum of 128 kbit/s bandwidth. To overcome this limitation, Channel bonding is employed as it enables to achieve greater data rate. In Channel bonding, ISDN B-channels of three or four BRIs are bonded together. In a video conference setting, ISDN delivers synchronized voice, video and text transmission between individual and group of video conferencing systems.

Resource Library

An insight into Call Center Outsourcing

Global enterprises strive to attain service excellence so that they can stay ahead in a competitive environment.

Download Now >

BSNL Augmented Business Performances with Go4customer

TBharat Sanchar Nigam Limited (BSNL) started its operation and installed Quality Telecom in the nation.

Click here to Read >

Getit infomedia optimized business performance with

GetIt Infomedia is a leading digital supermarket in India

Click here to Read >


Boosting Business Revenue with a Cloud-Based Call Center

Cloud-based call centers are the next generation. Heard this before? Well, yes! Cloud-based call centers are truly the upcoming future. Cloud is a network-based service where a service provider own....

Read more>>

Is it good to Outsource Inbound Customer Service?

Outsourcing customer support is common for every business nowadays. Companies want to outsource their call center service to enhance productivity, efficiency, and to boost revenue. Many businesses fee....

Read more>>

Our Esteemed Clientele

  • MSME logo
  • Manrega logo
  • GIL Company logo
  • BSNL Company logo
  • NMEICT Company logo
  • hudco Company hudco
  • Relaxo Comapany logo
  • NSEZ Company logo
  • Gail logo
  • MTNL logo
  • timex logo
  • BPCL Company logo
  • HPCL Company logo
  • IOCL Company logo
  • one97 logo
  • AIIMS Company logo
  • Power-Grid logo
Rating and Reviews – Call Center is rated 4.7/5 in 19 reviews on
Copyright © All rights Reserved at Cyfuture India Pvt. Ltd.