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SIP PHONE LINES

$5.00$25.00

Reliable, business-grade SIP phone lines powered by Telstra — offering quick setup and crystal-clear voice calling over any internet provider. Choose PAYG or Unlimited call plans tailored to your needs.

PAYG SIP Line – $5 per line

Unlimited SIP Line – $25 per line

 

Need help choosing the right plan or setting up your service? Our team is here to help:

Email: sales@comstel.com.au

Call: 1300 070 747

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Description

Description

Telstra-Powered SIP Phone Lines for Business | Comstel ICT

Take your business communication to the next level with Comstel ICT’s SIP Phone Lines, a scalable and cost-effective voice solution designed for Australian businesses. Powered by the trusted Telstra network, our SIP lines offer crystal-clear voice quality, flexible pricing, and seamless integration — all without the need for a dedicated private IP network.

Whether you’re a small business transitioning from traditional phone systems or a growing enterprise seeking a smarter VoIP solution, Comstel ICT provides business-grade SIP Phone Lines that deliver performance, reliability, and value.


What Are SIP Phone Lines?

SIP (Session Initiation Protocol) Phone Lines are a modern telephony solution that routes voice calls over the internet rather than through traditional copper lines. SIP is the backbone of many VoIP systems, offering businesses the flexibility to scale quickly, reduce communication costs, and streamline infrastructure.

At Comstel ICT, we offer Telstra-powered SIP Phone Lines that are ideal for connecting to IP phones, softphone apps, hosted PBX systems, or on-premise VoIP phone systems.


Why Choose Comstel ICT SIP Phone Lines?

  • Powered by Telstra
    Our SIP services are delivered via Australia’s most reliable telecommunications backbone — ensuring exceptional uptime and HD-quality voice clarity.

  • No Private IP Network Required
    Enjoy true flexibility. Our SIP Phone Lines work over any standard internet connection, so there’s no need for a dedicated IP network or locked-in NBN bundle.

  • Use Any Internet Provider
    You’re not tied to one internet provider. Keep your existing broadband while enjoying professional-grade voice services.

  • Scalable & Flexible
    Add or remove lines as your business evolves. Whether you need one SIP line or 100, we’ll grow with you.

  • VoIP-Ready
    Seamlessly integrate with VoIP phones, cloud-hosted PBX systems, or hybrid office setups.

  • Fast Setup & Easy Deployment
    Get started quickly without the need for complex installations or hardware dependencies.


Available SIP Line Plans

🔹 PAYG SIP Line – Only $5 per line/month

Ideal for businesses with variable call volumes:

  • Local Calls: 8¢ per call

  • National Calls: 14¢ per call

  • Mobile Calls: 65¢ per call

  • 13/1300 Numbers: 35¢ per call

This pay-as-you-go option is perfect for teams that prefer low monthly overheads while maintaining access to business-grade calling capabilities.


🔹 Unlimited SIP Line – Only $25 per line/month

Perfect for businesses with high daily call volumes:

  • Unlimited Local, National & Mobile Calls

  • 13/1300 Numbers: 35¢ per call

This plan gives you peace of mind with predictable billing and no per-minute surprises — ideal for customer service teams, sales offices, and high-traffic operations.


Who Can Benefit from Comstel SIP Phone Lines?

Our SIP services are tailored for:

  • Small and medium businesses seeking to upgrade from outdated phone systems

  • Multi-location offices looking for unified communications

  • IT professionals managing remote or hybrid teams

  • Enterprises needing cost-effective and scalable voice infrastructure

Whether you’re running a boutique law firm, a bustling retail chain, or a service-based business, SIP Phone Lines from Comstel ICT offer the modern connectivity you need.


Getting Started Is Simple

Setting up SIP Phone Lines with Comstel ICT is quick and hassle-free. Our expert team will guide you through onboarding, compatibility, and deployment. We ensure minimal disruption and full support at every step.


Why Comstel ICT?

Comstel ICT is a trusted Australian telecommunications provider offering tailored internet, voice, cloud, and mobile solutions to businesses nationwide. Our SIP Phone Line services are part of our broader commitment to providing affordable, enterprise-grade communication tools with personalised support — no call centres, no fuss.


Make the Smart Switch Today

Upgrade your business phone system with Comstel ICT SIP Phone Lines, backed by Telstra’s performance and our personal touch. Get started today and discover a better way to communicate — with clarity, cost control, and confidence.