What is an ISDN?

Increasing available lines to handle large call volumes can be very costly, especially for a business that’s on the verge of expanding. But with an Integrated Services Digital Network (ISDN) Primary Rate Interface (PRI), you can enjoy a 2Mbps bandwidth, 30- channel line service to handle higher number of calls at any time.

Highly scalable and affordable, this digital network seamlessly connects to your Private Branch Exchange (PBAX), Media Gateways and video conferencing equipment – connected to a public switch telephone or IDD network with just one line. Seek our representatives and give your business the competitive edge without paying a fortune.

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Contact our representatives at 1800-82-1919


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Delivers 30 channels for 30 calls with a 2Mbps high-speed connection. You can even opt to add separate trunks.

30 comes with 100 to 200 telephone numbers; suitable for large staff force i.e. call centres when handling a high volume of calls.

A PABX system that has an installed ISDN PRI card is required before installing these Maxis services.

Delivers 30 channels for 30 calls to be made or received at any point of time; using a 64 kbps bandwidth allocated for each voice connection to the customer’s PABX – all at affordable rates.

A PABX system that has an installed ISDN PRI card is required before installing these Maxis services.


Excellent connection

Fast, flexible, highly reliable and digitally clear connection, always.

Increased call capacity

More calls answered means better customer satisfaction; effectively enhancing your business growth.

Highly scalable

Choose how many trunks you require; the ISDN PRI can be tailored to match your every need.

Cost savings

Cheaper than subscribing direct single lines or pilot hunting lines; you can set up to 100 physical telephone lines at affordable rates.


Multi-line hunt group

You don’t have to wait for a line to use. Your calls are connected to your extension via the first available channel line.

Direct inward dialing

Using the last four digits as the extension number, callers can reach anyone directly without going through a telephone operator.

Pilot number

Choose your preferred Default Pilot Number from the block of numbers you subscribed. Use the as a primary number and billing purposes.

How it works

The Primary Rate Interface (PRI) is a service standard for larger companies within the Integrated Services Digital Network (ISDN) set of specifications. ISDN PRI uses circuit-switched access technology to deliver high-quality voice, data and video services over a high-bandwidth network.


View our range of call services for your business with Maxis

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