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NBN Retail Service Provider


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ISDN Multi Line



For Business Customers who need 10 or more phone lines, Optus Multi Line delivers greater flexibility than standard Telstra ISDN 102030 with cheaper line rental.

  • Scalable ISDN 10 Phone Lines on Optus Network - choose the number of lines you need
  • Line rental starting at $15 per channel
  • Free Installation - Save up to $3000 on installation charges
  • Flat rate Local and National Calls. Low cost calls to Mobiles.
  • Flexible DID range - Keep your existing numbers and add them to your DID range
  • Australian based Sales, Support and Account management - Speak to an Australian professional every time you call us.
  • Optus Multi Line

Choose Your Plan

Plan Term

Monthly Access On Net

Installation Fee On Net

Local Call

National Call

Calls to Mobile

 12 Months

$20 per Channel

$90 per Channel

12c untimed

12c untimed

20c per min

 24 Months

$18 per Channel


 36 Months
$15 per Channel
 DID Range
$40 pm

Things You Should Know (Show/Hide)
All rates are Optus Multi Line On Net. No Off Net service available. Provide address for qualification 1. Minimum  Commitment 12 Months – $480 (per Channel) Plus installation fee listed below.  2. Minimum Commitment 24 Months – $432 (per Channel) Plus installation fee listed below 3. Minimum Commitment 36 - $540 (per Channel) Plus installation fee listed at point (6) Below. 4. The minimum commitment advertised is based on choosing default channel options, you may choose to select a different number of channels other than the above your minimum commitment calculation is (No. of channels x monthly access per channel x months in commitment term as per your agreement) 5. Installation Fees – For fixed term contracts of 24 months or longer installation is free for those services on the Optus network (On-net). For contract term of 12 months (On-net) the following installation fees apply;10 channels $900, up to 20 channels $1800, up to 30 channels $2700 6. No Off Net services available. 7. Early Termination Fee applies and is equal to minimum monthly commitment x number of months remaining in contract. 8. General Information for the Service - The Service allows you to make calls to, and receive calls from, local, National, International and mobile telephone numbers. The Service provides you with: (a) a telephone service connected to the Optus network; and/or (b) a virtual private network linking different types of access lines; and/or (c) a long distance telephone service between a calling party within Australia and a called number elsewhere in Australia or overseas. 9. Use of the Service - You must acquire the Service for at least the Committed Term, if any, specified in your Application. You must cooperate with our reasonable requests in connection with the Service. 10. Coverage - Optus MultiLine is available to customers in an Optus Network area. For technical and commercial reasons not all business can be connected to MultiLine and the service may be delivered via another suitable method. Additional charges may apply. 11. Minimum Lines - A Multiline customer must have a minimum of 10 channels. Channels can be added in increment of 1 channel up to 30 channels, whereby after this point an addition 10 channel multiline service will need to be in place for further lines. 12. Equipment - You are responsible for any damage, destruction or theft of any of our equipment or Optus owned equipment. Specific configuration parameters for interworking with PABXs may be specified in the application form for your MultiLine service, including the number of digits sent by the Optus Network to the PABX (default 10), and whether the PABX requires the exchange to provide dial tone or ring tone (default no tones provided). 13. Number Portability – Not all numbers are able to be ported onto the Optus network. Portability of your number(s) may not be possible in circumstances including where your current carrier does not have a relevant agreement with Optus or where there are geographical limitations or exchange boundaries that prevent you from porting your number(s) 14. Porting Fees – Your current provider may charge you a porting away fee to port your numbers to the Optus network. You will be liable to pay any such charges directly to your current provider and should check these charges before proceeding with your application. 15. Suspension and Cancellation - You may cancel the Service at any time by giving 30 days notice to us but if you do so before the end of the Committed Term (where applicable), you may be required to pay an Early Termination Fee.

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Our testimonials

  • Our Hosted PBX Phone System and SHDSL internet Install was Seamless. I would recommend Telaustralia for anyone looking for that extra bit of service from their Phone Company. Our experience during our Hosted PBX installa.. more..

    Hosted PBX & SHDSL Macil Group
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  • Telaustralia was quick to react to our initial inquiries about a Business Grade Data Connection SHDSL and Hosted PBX Phone System. Shortly thereafter delivered the required communications and data plans to our business. .. more..

    Hosted PBX and SHDSL Subseaco

  • We engaged Telaustralia to install a new Phone System at our site. After getting a $4000 + quote from Telstra, Telaustralia gave us a Hosted PBX quote for $1500 and the system has so many features its amazing. Whats bett.. more..

    Hosted PBX Phone System Hummingbird Eco Retreat
    Hummingbird Eco Retreat

  • My Company retained Telaustralia to migrate our telephone, fax and internet system as well as advise us on a new NBN Phone and switchboard system. A prior office relocation and communications transfer was not handled.. more..

    NBN Phone System Lardner White Mt Eliza
    Lardner White

  • We'd like to thank Telaustralia for their wonderful service and professional manner in installing our NBN Phone System into our new office. Highly recommend their services - a pleasure to deal with. Sue Wilkinson Associa.. more..

    Sue Wilkinson
    Clauds Agency

  • Telaustralia was fantastic. Helpful, responsive, maintained ownership throughout our SHDSL & ISDN 10 Primary Rate Installation. ( more..

    Arran Goffe Sydney

  • Our office relocation went more smoothly than I could have hoped, thanks to Telaustralia. It was such a relief to have one point of contact for this project. Telaustralia managed the relocation of our fixed lines and sup.. more..

    J Levy
    Harms Consulting Sydney

  • Since changing to Telaustralia we have saved a considerable amount on our business phone accounts. We have been very impressed with the professional & prompt service we have received from the Telaustralia team. Nothi.. more..

    Jason Beare
    MBA Accounting Mornington

  • I would like to thank you for the level of service we received when you took over our business and home telecommunication accounts this year. It seemed like a daunting task to move our supplier considering we had been wi.. more..

    Tim Leonard
    Mortgage Choice Bayside Beaumaris

  • We are very new customers to Telaustralia after being referred by one of your existing clients. Telephone communications is so frustrating, different person everyone time you call for service,no followup and waiting peri.. more..

    Kim Reed
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