Telstra ISDN2

Basic Rate ISDN service that allows a business to gain all the advantages of digital phone lines without having to commit to more than 2 call lines. 

Telstra ISDN 10-20-30

Primary Rate ISDN service that delivers between 10 and 30 digital lines with a single connection. Largest ISDN Coverage in Australia.

Optus ISDN Multiline

Optus equivalent to Telstra ISDN delivering up to 30 digital lines with a single connection. Choose any number of call lines above the minimum of 10.

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