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ISDN2 Digital Lines

The Small Business Digital Phone Line Service

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Telstra ISDN2 Digital Phone Lines

ISDN2 is an ISDN (Integrated Services Digital Network) service that allows a business to gain all the advantages of digital phone lines without having to commit to more than 2 lines. ISDN2 enables you to conduct 2 concurrent telephone calls at the same time over the one PSTN line. ISDN2 lines provide clear, high-quality telephone connections, and offer more call and messaging features than standard PSTN business lines. This type of service is ideally suited to businesses that require 2 to 4 telephone lines.

ISDN2 Service Disconnections and Migration to IP 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.

PBX Compatible

Connect Business VoIP SIP Trunks Directly to an IP Enabled PBX System.

No Lock In Contract

Complete Business Flexibility with No Contract Month-to-Month Plans.

Cheap Call Rates

Save $$$ with our Cheap Call Rates and Low Monthly Access Fees.

ISDN2 Migration Options

Business VoIP SIP Trunks

Business VoIP

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

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 an ISDN2 service, 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.

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Current ISDN2 Charges and Options

Our existing business ISDN2 plan offers cheap call rates and a low monthly acccess fee. Migrate your existing service to our business grade SIP trunks and save up to 70% on your call rates and monthly access fees.

Need a New PBX System?

Upgrade your old PBX to our state-of-the-art Hosted PBX phone system that comes with a full set of enterprise grade features and functions. Gain functionality and reduce your telco costs by up to 50%.

IP Phone Lines

$5
Per Month
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Get Connected to the Latest Technology

  • Business Grade VoIP
  • Enterprise Grade SIP Trunks
  • No Contract
  • Cheap Call Rates
Business VoIP

The ISDN2 digital phone line technology has been the preferred choice of small businesses with less than 10 incoming phone lines. Its the ideal solution when existing broadband infrastructure is not suitable for business VoIP.

Difference Between ISDN2 and ISDN

Although they're both a type of ISDN (Integrated Services Digital Network) technology, there are 2 main differences.

Number of Channels

As the name indicates, the number of channels (call lines) available with ISDN2 is two. Multiple services are bundled together to deliver more than 2 lines (in multiples of 2). With ISDN, there is a minimum number of 10 channels and a maximum of 30.

PBX Equipment

ISDN is a primary rate digital service that requires the PBX to be fitted with a PRI (primary rate interface) card. ISDN2 is a basic rate service and requires the PBX to be fitted with a BRI (basic rate interface) card.

Do I Require an Active PSTN Service to Connect ISDN2?

No. The only requirement is for the business premises to have the necessary PSTN wiring and capacity.

Traditional copper lines are required to deliver ISDN2. There is no need to have an active PSTN line but there must be the required PSTN wiring not being used for other purposes.

Do I Require a PBX System to Operate ISDN2 lines?

Yes. And the phone system must be fitted with a BRI (basic rate inteface) card.

Most SME PBX systems can be used for both ISDN and ISDN2. However, they must be fitted with the necessary interface card, which is different for both technologies. To find out is your system is compatible, either check with your PBX maintainer or call us on 1300 000 300.

Can an ISDN2 Line Be Used as a Fax Line?

Yes. However it's dependent upon your telephone system and if it can be programmed to route fax calls to the fax machine. Please consult your PBX technician.

One of the best ways to overcome having to allocate a phone line to a fax facility is transferring to a Virtual Fax Service. It utilises fax2email and email2fax, eliminating the need to have a physical fax machine or a dedicated phone line.

Can I retain my existing numbers?

Yes. BusinessCom has LNP (local number portability) arrangements with all major carriers.

When upgrading from a PSTN service, your main business number will be made part of the ISDN2 service. Please note that only your main business number will be retained. When switching your existing ISDN2 lines to BusinessCom, all your existing numbers will be retained.

Transferring Existing ISDN2 Services to BusinessCom

The ISDN2 network is wholly owned by Telstra, a wholesale provider of BusinessCom. When transferring services, there are no network changes and it's only the billing that gets transferred.

Transferring your existing service to BusinessCom is seamless. All of your existing features and configuration remains as is and you won't even notice when the changeover happens.

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Get Connected to the Latest Rates and Technology

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