ISDN2 is an ISDN (Integrated Services Digital Network) service that allowed for two concurrent telephone calls at the same time over the one PSTN line. ISDN2 services provided clear, high-quality telephone connections, and offered more call and messaging features than standard PSTN business lines. The service was usually suited to businesses that required 2 to 6 telephone lines.
ISDN2 lines use the copper network to deliver phone services. In line with the roll-out of NBN and other broadband infrastructure, ISDN2 is no longer available for new service connections. Commencing September 2019, current services are being gradually disconnected and migrated to IP lines. Business IP lines use SIP (session initiation protocol) to deliver phone lines over the internet.
Business VoIP SIP Trunks
Business VoIP and SIP Trunks are the new age business phone lines. If your business has a suitable broadband connection, then you should get connected to the latest technology. Take advantage of enterprise grade features and functions, cheap call rates and low monthly access fees.
Hosted PBX Systems
Hosted PBX is another popular option for businesses that require full PBX functionality with their phone lines. At a fraction of the monthly cost of a PSTN line, you can gain access to all the features and functions of an enterprise grade PBX while taking advantage of much cheaper call rates. You can start with a single extension and build the phone system as your business grows.
