Skip to content
Summit Internet
For Telstra customers

Reviewing Your Telstra Business Internet and Phones? Talk to a Carrier That Only Serves Businesses.

Summit moves your business nbn, phone system and mobiles onto one independent carrier with its own network, and ports your existing phone numbers across. We plan the move around your Telstra contract date.

Get a Quote Call 1300 049 749

Switching from Telstra?

Book a call with a Summit switching specialist

What would you like help with?
When suits for a call?
Would rather talk now? Call 1300 049 749

Overview

Telstra is an ASX-listed Australian telco and a licensed carrier. To small businesses it sells business nbn plans, mobile plans and satellite internet, and its enterprise arm supplies networks, enterprise mobility, cloud, security and unified communications. Over the years many businesses have also run their phones on Telstra voice products such as Business SIP, T-Biz Voice, DOT (Telstra Business Internet) and Telstra Calling for Office 365.

Several of those voice products are changing. Telstra's customer terms state that Business SIP has not been sold to new customers since 30 May 2025, that Telstra Calling for Office 365 is withdrawn on and from 30 November 2026, and that T-Biz Voice on the nbn and DOT are withdrawn on and from 30 August 2027. If your phones run on one of these, see our guides to Telstra Business SIP, Telstra Calling for Office 365 and T-Biz Voice and DOT.

Even if none of that applies to you, there are good moments to review a provider: a contract coming to an end, an office move, a phone system upgrade, or simply wanting your internet, phones and mobiles from one business-only carrier that answers for all of them.

Summit has been connecting Australian businesses for 26 years. We sell business nbn with a static IP, Ethernet over fibre, fixed wireless in Melbourne and regional Victoria, a cloud phone system, SIP trunks, Microsoft Teams Calling and business mobile plans, all on one bill. Summit Internet is an independent carrier and is not affiliated with Telstra.

How Summit Helps

  • A Business-Only Carrier

    Summit does not sell residential services. Every customer we connect is a business, so our products, support and network are all built around how businesses work.

  • Business nbn With a Static IP Included

    Business nbn is available nationally with a static IP included, up to 2000/500 Mbps on full-fibre nbn. Where you need more, we offer Ethernet over fibre, and in Melbourne and regional Victoria, symmetric fixed wireless from 10 Mbps up to 10 Gbps.

  • A Cloud Phone System With Every Feature Included

    Our Hosted PBX starts from $10 per user per month, with auto attendant, ring groups, call queues, voicemail to email, call recording and mobile and desktop apps all included. We can preconfigure your handsets and ship them to you ready to plug in.

  • SIP Trunks for the Phone System You Already Own

    If your business has its own PBX, Summit SIP trunks connect it to our voice network. Start from 2 channels and scale up or down as your call volumes change.

  • Microsoft Teams Calling

    Prefer to make calls in Teams? We connect Teams to our voice network through Direct Routing. You keep your existing Microsoft licences: Summit does not resell them.

  • Voice Prioritised Over Your Own Connection

    When your internet and phones are both with Summit, voice traffic is prioritised with quality of service, so calls are not competing with downloads and backups on the same link.

  • 4G Backup That Fails Over Automatically

    Add 4G Backup and your connection fails over automatically to Australia's biggest mobile network, with 98.8% population coverage, then fails back when your primary service returns.

  • Mobiles, Inbound Numbers and Fax on One Bill

    Add business mobile SIM plans, 1300 and 1800 numbers, fax to email and on-hold messaging, so internet, phones and mobiles sit on one bill with one provider.

How It Works

  1. 1 Tell us what you have

    Share a recent Telstra bill or list your services: internet, phone numbers, phone system, mobiles and anything else on the line, such as EFTPOS or alarms. Let us know when your contract ends.

  2. 2 Get a clear quote

    We recommend the right internet, phone and mobile setup for your business and price it, with a switch date lined up to your contract end.

  3. 3 Install and test

    We connect your Summit internet and set up your phone system while your Telstra services keep running.

  4. 4 Port your numbers

    We lodge the port of your existing numbers. Keep your Telstra service active until the port completes, because only active numbers can be ported. The ACMA says a single local number generally ports in 8 to 15 days, and ports with several numbers can take up to 30 days.

  5. 5 Cancel what you no longer need

    Once your numbers are live with Summit and calls are tested, we tell you which Telstra services to cancel and when.

Talk to an expert

Thinking about leaving Telstra?

Book a short call with a switching specialist. Tell us what you have today and when your contract ends, and we will tell you what moving to Summit involves and whether it is worth it.

Book a call with a specialist Call 1300 049 749

Why Telstra Customers Choose Summit

  • 01

    A Licensed Carrier With Its Own Network

    Summit holds ACMA Carrier Licence #388. We build, own and operate our own network, with Points of Presence in NEXTDC data centres and DDoS protection as standard.

  • 02

    Internet, Phones and Mobiles From One Provider

    One provider is responsible for your connection, your phone system and your mobiles. When something needs attention, you make one call.

  • 03

    A Move Planned Around Your Dates

    We work from your contract end date and your business calendar, keep your existing services running until the new ones are tested, and handle the number port for you.

  • 04

    26 Years of Serving Businesses

    Summit has been in business since August 2000, and businesses are the only customers we serve.

Other services businesses pair this with

Bundle them on one bill →

Why Australian Businesses Choose Summit Internet

  • Great business and service provider. Highly recommended.

    Nabil Salameh

    last month

  • The Summit Team have always been a pleasure to work with; we highly recommend their services. Thank you for the continued support.

    Paul Braithwaite

    5 months ago

  • We recently moved our dental practice over to Summit for phone services, and the experience has been excellent from start to finish. The team has been responsive, professional, and incredibly helpful throughout the entire setup process. The transition was smooth, any issues were addressed promptly, and communication was always clear and efficient. Reliable phones and internet are essential for a busy practice like ours, and Summit has delivered exactly that. A special thank you to Michael for his patience and ongoing assistance during the transition. Highly recommend Summit to any business looking for reliable service and great customer support.Read more

    Elli Darabi

    5 months ago

  • The best service !!! Got issue fixed out by Greg ^^

    白大倫

    5 months ago

  • The whole team at Summit have been great from the initial onboarding to the rapid responses from Max when we need to make changes or additions to our services. Can't recommend them enough!

    Aaron Klaver

    5 months ago

  • As the I.T. Manager for Hydronic Systems Australia, Summit helps provide me and our companies with consistently stable Business Grade Internet, backed up by a dedicated Fixed Wireless Broadband connection. They also saved us a serious amount of money on our mobile phone bills. We have had no serious issues, and our business has been rock-solid under there great service. Highly Recommended.Read more

    James Paterson

    6 months ago

  • Prompt and efficient service. Highly recommend

    Elliot Bell

    6 months ago

  • We now use Summit across our real estate network. Great family business, reliable and their attention to detail is outstanding. Highly recommend.

    Ryan Bell

    6 months ago

  • As a reseller, we primarily work with Summit’s 4G services and have been very impressed. The plans are affordable, flexible, and well suited to our customers—especially for internet failover solutions. The sales and support teams are responsive and genuinely helpful, which is why we’re proud to partner with Summit Internet. We happily recommend them.Read more

    Mal Skinner

    6 months ago

  • After working with another ISP for several months to deliver a critical internet service for a major international sporting event, we were ultimately advised that the required upgrade was unlikely to be completed prior to event week. This left us facing a significant risk to service delivery. After exhausting all other options (and a few sleepless nights) we came across Summit Internet. From the initial conversation, Allan immediately understood the severity of the situation and quickly engaged his technical delivery team. Michael “Radar” was on site within days to assess and finalise a solution. Despite challenging conditions, including large trees and other obstructions, he worked tirelessly to design and implement an alternative approach. Leveraging an adjacent building, a temporary NBN connection, and a wireless link into the comms room, the solution was delivered within 24 hours of the initial site visit. Not only was the outcome faster than expected, but it was also more cost effective and delivered higher speeds than originally promised by the previous ISP. Over the course of the event, the service handled terabytes of data and supported hundreds of concurrent users without a single speed or performance issue. I cannot thank Summit Internet, particularly Allan and Radar enough for their exceptional service, technical expertise, and commitment to delivering under pressure. Highly recommended.Read more

    Adam Hastie

    6 months ago

  • Fausto and the staff at Summit are amazing. We have had nothing but fantastic service from start up to problem solving issues. The system is easy to use. Would highly recommend this service provider.

    Jo Bodhankar

    6 months ago

  • Summit internet recently set my small business up with a local land line number and a soft phone that runs off an app on my mobile - getting my personal phone number off the internet and being able to distinguish between business and personal calls is a game changer. Whole process took less than a week, and is super cost effective. Highly recommend.Read more

    Alex Holly

    8 months ago

Reviews from Google. Read all reviews on Google

Frequently asked questions

Is Summit Internet part of Telstra?
No. Summit Internet is an independent Australian carrier holding ACMA Carrier Licence #388. We are not affiliated with Telstra.
Why switch if my Telstra service is working?
If your current services do everything your business needs, there may be no reason to change. Businesses usually look at Summit when a contract is ending, when they are moving office, when a phone product they rely on is being withdrawn, or when they want internet, phones and mobiles from one business-only carrier.
Will I have to pay to break my contract?
That depends on your agreement with Telstra. Check your contract for any early termination charges. The simplest way to avoid them is to time your switch to your contract end date, and we can plan the move around it.
Can I keep my phone numbers?
Yes, in most cases your existing numbers can be ported to Summit, including local numbers and 1300 and 1800 numbers. Keep your Telstra service active until the port is complete, because a number that has been disconnected can no longer be ported.
How long does porting take?
The ACMA says a single local number generally ports in 8 to 15 days, and a port with several numbers can take up to 30 days. Start early, especially if you are working towards a contract end date.
My Telstra phone product is being withdrawn. What should I do?
Check your Telstra notice or account for the dates that apply to you, then plan the move before the withdrawal date so your numbers can be ported while the service is still active. Our guides cover Telstra Calling for Office 365, T-Biz Voice and DOT and Telstra Business SIP.
Can I keep using Microsoft Teams for calls?
Yes. Summit connects Microsoft Teams to our voice network through Direct Routing, so your staff keep calling from Teams. You keep your existing Microsoft licences, as Summit does not resell them.
Do I have to move everything at once?
No. You can start with your phones, your internet or your mobiles and move the rest later. Having internet and phones with Summit does mean your voice traffic is prioritised over the same connection.
Does Summit serve businesses outside Melbourne?
Yes. Business nbn, phones and mobiles are available to businesses across Australia. Our fixed wireless network covers Melbourne and regional Victoria only, and you can check coverage at your address.
Get started

Ready to Review Your Telstra Services?

Tell us what you have and when your contract ends, and we will plan a switch that keeps your numbers and your business running.

Call 1300 049 749 · Mon-Fri 9AM-5PM AEST

Get a Quote Talk to Our Team
Call 1300 049 749 Get a Quote