ISDN 2017-03-13T18:33:04+00:00


Business Grade with Dedicated 24/7 Support

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Phone Line Plan Inclusions

Arrow Plan Inclusions

Arrow Plan Inclusions*

*Direct dial extensions available at an additional cost

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Arrow Cloud Phone

Want a simple phone solution thats flexible, scalable and feature rich?
Arrow Cloud Phone could be right for your business!

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Call Rates


from 12c per call


from 5.5c per minute

Calls to mobiles

from 16.5c per minute


from $3.5c per minute (no flagfall)


from 8c per call


from 5c per minute

Calls to mobiles

from 16c per minute


from $4.5c per minute (no flagfall)

ISDN 10/20/30

from 8c per call


from 5.5c per minute

Calls to mobiles

from 15.5c per minute


from $3.5c per minute (no flagfall)

Frequently Asked Questions

What is PSTN?

The public switched telephone network (PSTN) is the original and still most common form of telecommunication connectivity and is a much needed part of many businesses. It supplies a single phone line and telephone number.

Is PSTN right for my business?

PSTN is ideal for businesses that require only one or two lines and is also required where a dedicated line is needed, such as fax, EFTPOS , alarm system lines, and ADSL2+ internet connections.

What is ISDN?

Arrow ISDN (Integrated Services Digital Network) is a digital, fixed line service providing high capacity, directly connected voice and switched data. ISDN transforms your existing phone line into the equivalent of 2-30 digital lines depending on which plan you choose. Each digital line can handle both voice, image, data and video.

Is ISDN right for my business?

ISDN is ideal for businesses who require multiple phone lines, and is scalable to suit your needs.

If you’re a smaller business you might want to consider our ISDN 2 plan or if you’re a medium to large business, our ISDN 10, 20 or 30 might suit you better.

ISDN also allows your staff to have their own unique phone numbers which can be dialled directly. This is called a Direct in-dial number (DID).

What is a PRI used for?

PRI (Primary Rate Interface) is a way of connecting your business to the PSTN (Public Switched Telephone Network). PRI is a physical connection to the PSTN over a dedicated line that only serves voice transmission.

PRI provides guaranteed call quality and allows for up to 30 simultaneous calls. If you require more than 23 simultaneous calls you’ll need to purchase additional PRI lines.

What is the Speed of ISDN?

ISDN typically provides two 64 kilobits per second (kbit/s) channels which can be combined to make a 128 kbit/s channel.

What type of connections are PRI and BRI?

Both BRI (Basic Rate Interface) and PRI (Primary Rate Interface) are ISDN lines that allow telephone lines to deliver voice, video and data.

ISDN BRI is an entry level ISDN connection suitable for home or small business and allows for up to two calls on the one line.

ISDN PRI is suitable for larger business as it allows for up to 30 calls simultaneously and has a larger data capacity.

Need to know more?

Talk to a friendly Arrow Solution Consultant for some jargon-busting advice on the right connection for your business!

Call 1300 555 330 today!

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