Telstra PSTN Lines

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Telstra PSTN Lines

PSTN (Public Switched Telephone Network) lines, also referred to as POTS or Plain Old Telephone System, are a basic telephone service and usually used by small businesses, home offices or as standalone lines for EFTPOS, Fax or delivery of a DSL service.

PSTN Line Disconnections and Migration to IP Lines

PSTN lines use the copper network to deliver phone services. In line with the roll-out of NBN, they are being phased out and existing services are being migrated to IP lines. IP lines use VoIP (voice over internet protocol) for residential lines and SIP (session initiation protocol) for business lines.

No PBX Required

PSTN and IP Lines Can Be Used with Either Stand Alone Phones or PBX Systems.

No Lock In Contract

Upgrade Your Business Lines at Any Time with Our Month to Month Plans.

Cheap Call Rates

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

PSTN Migration Options

Business NetPhones


The business NetPhone combines business VoIP with hosted PBX functionality programmed into an IP phone. It is perfectly suited to businesses looking for an out-of-the-box office phone solution. And you don't need a telephone line to make it operate. Simply plug the NetPhone into a suitable broadband service and you're up and running.

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 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.

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Current PSTN Charges and Options

Business PSTN Plan

Our existing business PSTN plan is Month to Month and allows you to upgrade at any time. It offers a low access fee and some of the cheapest PSTN call rates available.


Per Month

Perfectly Suited to Businesses Looking for an Out-of-the-Box Office Phone Solution

  • Business IP Phone
  • Enterprise Grade PBX Features
  • Business Grade VoIP
  • Australian Landline Number
  • NO Contract
  • Cheap Call Rates
  • Low Monthly Access Fee
  • Fully Scalable

PSTN Lines vs Business VoIP

Business VoIP uses SIP Trunks which are essentially VoIP phone lines. They deliver the same core functionality as PSTN lines but are a lot more flexible, come with superior features, and are a lot cheaper.

  • Unlike PSTN lines, SIP trunks don't require to be physically installed at the business premises. They utilise the broadband service to make and receive phone calls. That makes them fully portable and able to be provisioned a lot quicker.

  • Landline phone numbers attached to a PSTN line are restricted by the local exchange. That's why when you change premises to a location outside the existing exchange, the phone number can't be transferred. Phone numbers attached to a SIP trunk are completely portable.

  • PSTN lines utilise the old copper network that's prone to faults and low quality calls. Business grade SIPs come with a service provision level of 99.999%.

  • In most cases, the only fault that occurs with SIPs relates to the broadband service it uses. However, if that happens there are a number of business continuity options like switching to an alternative broadband service or utilising wireless 4G. When a fault occurs with a PSTN line, it requires a technician to visit the premises and it could take days, even weeks to fix.

  • PSTN lines can only be used with a standard desk phone or a PBX with analogue ports. In both cases, calls can only be made from the premises where the lines are installed. SIPs can be programmed into multiple devices including IP phones, PBX systems, soft phones and mobile apps. That means you can use them anywhere there is a suitable broadband connection.

  • SIPs are a lot more versatile than PSTN lines. They can be used with an IP phone to deliver superior functionality as a stand alone phone with single line access. Or provide enterprise grade phone system with the variety of PBX options.

  • SIP trunks are a lot cheaper than PSTN lines. They come with low monthly access fees and cheap calls.

Business VoIP

Quick Guide to PSTN Lines

Will I be able to keep my existing telephone number?

Yes. BusinessCom PSTN phone lines are supplied by Telstra which owns the copper network. That makes PSTN number portability seamless. In addition, BusinessCom has Local Number Portability (LNP) agreements with all the major carriers.

Will there be any interruption to my existing phone service when I switch to BusinessCom?

No. When transferring a PSTN line to a PSTN line, the changeover to BusinessCom is seamless and you won't even notice it has happened.

Will my existing line hunt and other features be retained?

Yes. There will be no change to any of your existing PSTN line features. The switch to BusinessCom will incorporate the full transfer of services.

How long does it take to install a new service?

PSTN connection timeframes may vary upon the type of connection required and if there is a need for a technician visit. It usually takes between 5 and 10 business days to connect a PSTN line, however, a longer period may be necessary if a technician visit and new cabling is required. BusinessCom will inform you of the approximate connection timeframe at the time of receiving the Service Application Form.

Do I require a telephone system to operate PSTN lines?

No. There is no requirement for a telephone system and you can use a standard telephone handset to operate a PSTN line.

What type of telephone system operates with PSTN lines?

The telephone system requires analogue ports to operate with PSTN lines.

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