COST SAVINGS
SIP Trunks typically offer more competitive rates for local, long-distance, and international calls compared to traditional phone lines. With SIP, you can consolidate voice and data traffic over a single network, reducing the need for separate lines and associated costs.
SCALABILITY
Allowing for easy scalability, by enabling businesses to add or remove lines as needed without the constraints of physical phone lines. This flexibility is particularly advantageous for businesses with fluctuating call volumes or those experiencing growth.
QUALITY OF SERVICE
Offering improved quality of service compared to traditional phone lines, especially when deployed over a dedicated or managed network. QoS mechanisms prioritize voice traffic, ensuring clear, reliable voice communication even during periods of high network congestion.

WHAT IS SIP TRUNKING?

Session Initiation Protocol (SIP) trunking is a modern, digital method of making and receiving phone calls and other communications over the internet, replacing traditional analogue and ISDN phone lines. A “trunk” in this context refers to a virtual phone line that enables calls to be made over the internet.

SIP trunking improves call quality, supports remote work by enabling seamless connectivity across multiple locations, and enhances business continuity with automatic call rerouting in case of network failures.

  • Integrate with modern communication platforms
  • Flexible and cost effective
  • Easily scalable without costly infrastructure changes

ONE OF AUSTRALIA’S MOST PREFERRED VOIP PROVIDERS

C2 Communications were the first 3CX supported SIP services in Australia over 10 years ago with a history of excellent service delivery.

HOW DOES A SIP TRUNK WORK?

SIP trunking uses an on-site or cloud-hosted PBX (Private Branch Exchange) server to route calls through these virtual channels. Each SIP trunk channel functions as a virtual version of a traditional phone line, and your business will need one channel (SIP Line) for every simultaneous call. SIP phones (Session Initiation Protocol phones) are VoIP devices that use the SIP protocol to make and receive calls over the internet.

 

Beyond standard voice calls, SIP trunks can also carry multimedia communications such as video and messaging, making them a flexible solution for unified communications. As legacy systems are phased out globally, SIP trunking offers a cost-effective and convenient alternative that leverages your existing phone infrastructure. By converting traditional phone systems to Voice over Internet Protocol (VoIP), SIP trunking delivers advanced features, scalability, and reduced call costs—all while allowing businesses to retain their current hardware setup.

 

SELECT YOUR SIP TRUNK PLAN

Unlimited Plan

$ 39 / Month*

Includes:

  • 1 local number
  • 1 SIP Line
  • Unlimited Local, National, and Mobile calls

 

Excludes:

  • 1300 & International calls

 

*Minimum of 4 SIP Lines

  • No lock-in contracts
  • Free number porting
  • Easy to purchase new numbers
  • Compatable with all PBX solutions

PAYG Plan

$ 22 / Month*

Includes:

  • 1 local number
  • 2 SIP Line

 

Excludes:

  • All outbound calls

 

Calls to mobile starting at $0.08 per minute with no flagfall.

 

*Minimum of 4 SIP Lines

  • No lock-in contracts
  • Free number porting
  • Easy to purchase new numbers
  • Compatable with all PBX solutions

FAQs

Can I keep my existing phone numbers with SIP Trunking?

Yes, you can keep your existing phone numbers when switching to SIP trunking through a process called number porting. Your service provider will transfer your current numbers to the SIP trunking service, ensuring continuity for your business without changing contact details.

Is there a contract commitment when I choose SIP Trunking with C2 Communications?

No, C2 Communications offers flexible SIP trunking plans without long-term contract commitments. You can scale services as needed and adjust your plan to fit your business requirements, providing flexibility without being locked into a fixed agreement.

What are SIP phones?

SIP phones (Session Initiation Protocol phones) are VoIP devices that use the SIP protocol to make and receive calls over the internet. They connect to a VoIP service or a SIP-based phone system, enabling voice, video, and messaging. SIP phones are popular for their flexibility, cost-effectiveness, and ability to integrate with modern communication platforms.

What equipment do I need for SIP trunking?

For SIP trunking, you’ll need a compatible VoIP phone system (PBX systems like 3CX), an internet connection and SIP-enabled phones or applications. Your service provider can assist in ensuring your setup meets the technical requirements for SIP trunking.

What is the Number Porting process with C2 Communications?

To port your phone numbers to C2 Communications, follow these steps:

  • Provide a list of numbers/services to be ported, typically using your telephony bill.
  • Sign the number porting form from C2 Communications.
  • C2 will schedule a porting date with you during business hours.
  • On the agreed date, expect 30 minutes of downtime during the switch.
  • Register the SIP trunk in your system.

If not porting, C2 can provide new numbers with a 5-business day activation.

MIGRATE TO C2 TODAY

FINDING THE RIGHT VOIP PROVIDER, MAKES ALL THE DIFFERENCE!

Get in touch with our team of SIP Trunking specialists.