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  • THE IT CROWD SIP TRUNKS

    A SIP Trunk allow you to route concurrent calls over the Internet to an IP capable PBX system. The IT Crowd uses the SIP protocol to deliver calls to your PBX platform. If you do not have a PBX or VoIP Gateway - or your existing PBX/gateway is not SIP capable then the The IT Crowd SIP trunking service is not for you and you should never enable this feature on your account.

    SIP trunking can be seen as a low cost replacement for traditional PRI or analog circuits - using the Internet to make/receive calls instead. This means cost savings since you do not need to order expensive circuits from a legacy telecommunications provider and can use your existing broadband connection to terminate/place calls.

    We have 2 SIP Trunk plan options below or see our bundled plans for competitive plans

  •  

    Plans

    SIP Trunk /1 Device

    Monthly Charge

    $10.00+GST

    Phone line

    NZ local DDI

    Calls to other The IT Crowd customers

    Free

    NZ Local

    3c a minute

    NZ National

    5c a minute

    Mobile

    18c a minute

    UK, USA, China, Australia

    8c a minute

    Other International

    All calls at standard VoIP call rates

    No of SIP Channels

    5 shared channels (ie 5 concurrent calls). An extra 5 channels is available at $10 per month

    Additional DDIs with no call features

    $2.50 per month each or block of 10 naked DDI for $25

    All prices are exclusive of GST

  •  

    Plans

     

    SIP Trunk / 1 Device 2000 local mins

    Monthly Charge

     

    $20

    Phone line

     

    NZ local DDI

    Calls to other The IT Crowd customers

     

    Free

    NZ Local

     

    2000 free mins then 3c a minute

    NZ National

     

    5c a minute

    Mobile

     

    22c a minute

    UK, USA, China, Australia

     

    8c a minute

    Other International

     

    All calls at standard VoIP call rates

    No of SIP Channels

     

    5 shared channels (ie 5 concurrent calls). An extra 5 channels is available at $10 per month

    Additional DDIs with no call features

     

    $2.50 per month each or block of 10 naked DDI for $25

    All prices are exclusive of GST

  • SIP trunking is primarily used by businesses. To setup SIP trunking you will need the following:

    • A static Internet (IP) Address. Dynamic DNS hostnames are not allowed. You must specify an IP address in The IT Crowd Live to act as your endpoint for inbound calls.
    • No firewall rules or NAT blocking traffic between The IT Crowd’s servers and your IP-PBX. You may setup firewall rules to limit traffic to The IT Crowd’s servers or setup port forwarding if required for security reasons. See below for more details.
    • You need a SIP (v2) compatible PBX platform or gateway. The IT Crowd does not support H.323 or other VoIP protocols. A popular example of an IP-PBX platform is Asterisk/Trixbox, although there are a multitude of other hardware versions such as the Epygi gateways for example.

    If you are unsure whether your IP-PBX is compatible with The IT Crowd then contact support@theitcrowd.co.nz for more information.

    You do not always need to have SIP trunks with an IP-PBX. Many IP-PBX platforms can register (login) with The IT Crowd as a normal phone would. In fact this is what many Asterisk users do using the ‘register’ directive in their SIP configuration. If you do not have a static IP address or your IP-PBX is behind NAT then you cannot use SIP Trunking and you will need to register your devices with The IT Crowd and use the ‘Inbound trunking’ feature on each line instead to achieve a similar goal.

    Many IP-PBX’s cannot be configured to register/login to The IT Crowd as a client, so for these types of devices SIP trunking is the only way you can interconnect with The IT Crowd. SIP trunking has many other benefits over a dynamic registration including:

    • Your device does not need to be logged in or registered, so calls will always be routed to your IP-PBX. This means that if your internet connection was reset or went down temporarily you would start receiving calls immediately once your internet connection comes back up (instead of having to wait for a re-registration or login)
    • You can route all your numbers easily to your IP-PBX with no further configuration required. If you add more numbers to your account then they will automatically be routed down your trunk.
    • SIP trunks have the concept of a ‘pilot’ number. You can present any caller ID number down your trunk and if it is not recognised as being on your account then the caller ID will be set to the trunk number. This makes configuration simpler and avoids outbound calls ever being rejected.
    • You save bandwidth since there is no need for SIP registrations or ‘polling’ traffic usually sent to devices that are behind NAT.

    Can I login to The IT Crowd with a phone while I have SIP trunking enabled?

    No, you cannot have SIP trunking enabled on the account at the same time as logging in/registering from another phone/device. When you enable SIP trunking on your account you instruct The IT Crowd to always send calls to your IP-PBX system and nowhere else. If you try to login/register to The IT Crowd on one of your numbers while SIP trunking is enabled then you login/registration will fail. If you want to use SIP trunking and a standard VoIP phone with The IT Crowd then you will need to setup 2 separate accounts to do this.