ISDN on the other hand is digital, and both voice and data are sent as digital “packets”. These packets, like cars on a motorway, can be caravanned with packets of other conversations travelling on the same circuit. Each packet on and ISDN line contains calling information so that it will exit to the appropriate party. Since ISDN carries more calls it means you can have more of your employees using the phones at the same time. Because ISDN is a digital service the calls are also clearer and if you use the phone line to connect to the internet ISDN will make your browsing faster, which is always a bonus for any growing business. There are a tonne of other technologies that become available if you are on an ISDN line including Video Conferencing, Direct Dialling in (DDI), Multiple Subscriber Numbering (MSN) and Interactive Voice Response (IVR).
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