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2nd March 2023
ISDN stands for Integrated Services Digital Network and it is a digital network providing 64 Kbit and 2 Mbit bandwidth voice and data circuits. A set of international standards for telephone transmission.
ISDN provides an end-to-end digital network, out-of-band signalling, and greater bandwidth than older telephone services.
The two standard levels of ISDN are Basic Rate Interface (BRI) and Primary Rate Interface (PRI). See Basic Rate Interface and Primary Rate Interface.
Robyn Coppell has worked as Digital Content Manager for Call Center Helper since 2021. After University her first job was in a contact centre and has stayed in this space ever since.
She has experience of contact centre operational management, software systems, css and php coding. She edits a lot of the guest content that is published on Call Centre Helper.
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24th September 2025
From Insight to Impact: The Next Era of CX and AI Leadership – Webinar
