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  1. SIP trunk interconnection
    For the setting of the trunk between the 2N® VoiceBlue Next and your Elastix PBX, you need to configure "SIP proxy (GSM→IP)" for GSM incoming calls. "SIP proxy (IP→GSM)" is designed only for secure communication with the traffic from your Elastix PBX. You can specify the IP address and port where the IP packets will be accepted.
  2. Configuration of the LCR (Least Cost Routing)

    You have to specify prefixes for the operators in the country you are currently located. An example of this would be that in Czech Republic prefixes 6 and 7 have 9-digit numbers.
    The setting is displayed below.

    You need to create specific guidelines connecting prefixes with the GSM group. In the "GSM group" you will specify settings for SIM cards assigned to this specific group. In the "GSM group assignment" you can assign the module for the appropriate GSM outgoing group.

  3. Configuration of GSM outgoing groups

    You are able to have different setting for each GSM group (CLIR, free minutes, virtual ring tone, roaming and others).
  4. Incoming calls
    For incoming calls you can define 2 groups with the different behavior behaviour and assign them to the GSM modules. The settings are similar with "GSM groups assignment" for outgoing calls.
    In GSM incoming groups you can specify the traits for each GSM incoming group. Choose the mode to Reject, Ignore, Accept incoming calls or Callback.
    You can define the list of numbers called. The number will be automatically dialed dialled after the DTMF dialing dialling has timed out. This happens when the customer does not press button within the specific time. At this point the number will be routed to the extension 100 to your Elastix PBX (if you set up SIP proxy (GSM->IP) in VoIP parameters).