Today, we’re wrapping up our look at the evolution of ISDN and why it didn’t do well in the marketplace. This newsletter will look at the legacy of ISDN. The Primary Rate Interface (PRI), we believe, ...

ISDN codecs can specify several types of interface. Among these, S, T, U, V.35 and X.21 are more commonly seen, although there are others. This should help demystify ...

Some people may say that ISDN is dead, but that’s news to the millions who rely on ISDN Primary Rate Interface service for connecting PBXs and dial-up modem banks to the public network. While it’s ...

Greetings everyone,<BR><BR> I am looking for an ISDN to IP converter. The company I work for is wanting to sell IP terminals in India, to do this we need an ISDN to IP converter. We are looking for a ...