ISDN (Integrated Services Digital Network) is a proven, reliable technology, the perfect digital solution when your customer wants to move from on from a simple phone line but is perhaps not quite ready for a full IP based system.
Also known as Telstra ISDN2, ISDN10/20/30 or Optus Multiline it provides simultaneous calls on the same phone number. Every staff member can also be given their own direct phone number allowing multiple inbound and outbound calls.
