Easily scalable to meet your business needs

Microboss i3 Managed SIP Lines offer the same secure, high call quality phone service as ISDN, with significant savings on call costs and line rental. Your business will retain existing phone numbers, PBX and handsets while creating the opportunity to easily switch on high-performance, hosted voice and video services at a fraction of the cost of upgrading your traditional phone system.

Who is it for? large businessmedium Businesssmall business

Suits small to large organisations looking for high quality, cost-effective and scalable telephone lines.


  • Highly scalable. Add extra capacity at any time.
  • Business continuity options
  • 24/7 support teams across Australia

    What is SIP Trunking?

    SIP trunking enables the end point’s PBX (Phone Exchange System) to send and receive calls via the Internet. It is a voice over Internet Protocol (VoIP) technology and streaming media service based on the Session Initiation Protocol (SIP) by which Internet telephony service providers (ITSPs) deliver telephone services and unified communications to customers equipped with SIP-based private branch exchange (IP-PBX) and unified communications facilities.


    The potential to save.

    Your business benefits from the more affordable connection, rental line fee and call charges compared to traditional ISDN services. Only pay for what you use with per second billing on call.


    Potential savings on call costs and line rental.

    Users not only keep their landline numbers and handsets, they will also experience the same (if not better) high-quality phone service as ISDN.


    Easily scalable to meet your business needs.

    New hires coming in? Expanding to a new site? With SIP, it’s much easier and faster to add additional call capacity when and where you need it.


    24/7 support teams across Australia

    We’ll be there to help 24/7. Our team also offers round-the-clock delivery and maintenance of Microboss SIP services.


    Redirect without fail.

    If the link to your site fails due to unplanned disruptions or overflow, your calls can be redirected to your chosen recovery site or to a mobile number of your choice.


    Solve problems in high-definition.

    Make sure your team’s best ideas are heard loud and clear with HD calls and video-conferencing on HD-enabled equipment.

    Technical SpecificationSIP TrunkSIP Voice Connect
    No. of Channels10-12060+
    Who is it for?Small to medium-sized businessMedium to large-sized business
    ISDN Phone System CompatibilityYesNo
    Call Charges Type1. PAYG (pay for all the calls) 2. Premium (Local, National, calls to Australian Mobiles Included)PAYG only
    Connection TypeSIP RegistrationSIP Gateway
    SIP Overlay^YesNo
    Local Number PortabilityYesYes
    Business Continuity^YesYes
    Access TechnologiesDedicated data connection (UC Access)Dedicated data connection (UC Access)
    Access Speeds100kbps x channel100kbps x channel
    AvailabilityAustralia onlyAustralia only

    ^Subject to Microboss conducting scoping and design studies.

    Find out if SIP is good fit for your business