SIM Card Placement

Insert the SIM cards into one of the four SIM holders on the 2N® VoiceBlue MAX front and make sure that the chip contacts are at the front bottom. The SIM holders are equipped with the push&pull technology for facilitation.

How to connect to the 2N® VoiceBlue MAX


How to set up the Call Routing

In the VoiceBlue MAX calls can come from the FXS Ports or from the VoIP port and calls are routed to any GSM/UMTS port according to the LCR (Least Cost Routing) table. If the GSM port is busy, other ports are checked automatically for availability (depending on the configuration) and in case if an allowed outgoing port is not available, the outgoing call will be rejected.

The LCR algorithm identifies the outgoing call type, current time tariff rate, day in a week, eventually free minutes of GSM providers and routes outgoing calls accordingly. Incoming calls from GSM networks are routed directly either to the FXS Ports or to the defined SIP address, or the DISA function is activated. Furthermore, calls can be routed according to the CLIP (caller's telephone number). And the CallBack service is also available.

If you want to check current settings of call routes, go to the Menu Gateway Configuration / Port Modes

How to set up the LCR Table

The LCR (Least Cost Routing) helps you select outgoing call routes according to the called subscriber's number (or some prefix), time of the day and weekdays. 

Whenever a call is being done, the LCR table is searched sequentially from top to bottom. If the called destination prefix matches the network prefix included in the List of networks table (and designated as Network number in the LCR table), the call is routed according to the routing group parameters (Groups in the LCR table) as set in the GSM outgoing groups table. The call will be connected via the GSM module which was assigned to the GSM outgoing group in the Assignment to GSM groups table. 

Therefore, you need to set and configure:

 Example 

  Let’s say we have SIM cards of two GSM operators:

Module 2 and 3 will have SIM cards from Operator 2 (Outgoing Group 2)

Configuration of GSM outgoing groups

You are able to set up different settings for each GSM group (CLIR, free minutes, Virtual ring tone, roaming and others).

1.    Prefix lists

We have to create two network lists, the first one for both of the Operators.

    1. Operator 1 network list:
      We configure the normalization of Called party number in the Table of replaced prefixes (the number in front of the slash mark is replaced by number behind the slash mark, if there is not any number in front of the slash mark it equals to “everything”).
      We also have to fill in the Table of prefixes with all prefixes of the Operator 1. Because all numbers are 9 digits length, it is not necessary to specify each prefix, we can use the parameter Default count of digits and fill there the value 9.
      The Table of replaced prefixes, Table of accepted prefixes and Digits count must correspond with the called number and it leads to the match in prefix list

    2. Operator 2 network list:

We configure the normalization of Called party number in the Table of replaced prefixes (the number in front of the slash mark is replaced by number behind the slash mark, if there is not any number in front of the slash mark it equals to “everything”). We also have to fill in the Table of prefixes with all prefixes of the operator 2. Because all numbers are 9 digits length, it is not necessary to specify each prefix, we can use the parameter Default count of digits and fill there the value 9.

  1. LCR Table
    We have to configure rows in the LCR table where we bind together GSM Outgoing groups with Prefix lists. Click on ADD button (or edit the first line of LCR table) to add the first line and configure it in the following way for the Operator 1:
    Click on ADD button to add the second line and configure it for the Operator 2.
    Now you can see two LCR lines in the LCR table:

How to set up connection to the opposite device (PBX)


Incoming calls

SIM cards