# Enabling IMDX

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Descriptions

The IMDX System enables the R9 System to provide “private” communication services. The IMDX provides private, hybrid and public user services to the GSM subscribers. Operator may restrict private users to make/receive calls to/from private users only and public users to make/receive calls to/from public users only. while Hybrid users can make/receive calls from both private and public users. IMDX allows the operator to use the existing R9 System to provide GSM services to employee users as a private communication tool for their daily works.

Implementation

| Configure SCCP Parameters for OPPS Local Node

1.Go to EMS >Configuration >NSS >SCCP.

2.Make sure the System ID at the upper right corner displays SCCP(MSS_Pub), click the button .

1.Click the Local Node tab.

2.Click the hyperlinked index number of OPPS to open the OPPS Option window.

3.Configure the relevant parameters given in the following table.

4.Click the button to update parameters to application servers.

Sub-parameter | Description (Click highlight SAVE after change) | Recommended Value
Network Indicator | Specify the local node to a network. Choose the same network as MTP3 setting. | National
MSISDN | The E.164 node address of OPPS. | CC+NDC+SN format
IP 0 | IP address of OPPS server 0. | 172.18.98.1
IP 1 | IP address of OPPS server 1. | 172.18.99.1

| Configure SCCP Parameters for Remote Network

1.Click the GTT tab, and then click New at the bottom of the Globe Title Translate table.

2.In the GTT ID box, select an available number for the new entry, and then click the button.

3.In the GTT Option window, configure the following parameters to add GTT for remote HLR.

4.Click the button to update parameters to application servers.

5.Repeat step 1 to 4 to add remote MSC and VLR.

Sub-parameter | Description (Click highlight SAVE after change) | Recommended Value
Flag | Enable or disable this GTT item. | Enable
Number Plan | Describe which numbering plan will be used for the global title. The numbering plan chosen will aid the routing system in determining the correct network system to direct the message. | GT
Translation Type | Translation examines the destination address and deciding how to identify it over the telephone network. | 0
Start GT Number | E.164 node number of remote MSC/VLR/HLR. | E.164 Number
End GT Number | E.164 node number of remote MSC/VLR/HLR. | E.164 Number
Network Indicator | Nature of Address Indicator. It indicates the scope of the address value. Choose the same network as MTP3 setting. | National
DPC | Point Code of remote network. | --
SSN | Subsystem Number of MSC/VLR/HLR. | 6(HLR) 7(VLR) 8(MSC)
Route Indicator | For the connected network, select Route on GT. | Route on GT
Address Indicator | Contribution of SCCP Address. | GT+DPC+SSN
Replace Start Digit | The start digit of the GT number to be replaced. | 0
Replace End Digit | The end digit of the GT number to be replaced. | 0
Replacing Number Plan | The type of the number to be output. | N/A
Replacing Digits | Replace the selected GT number range with these digits. | N/A

| Configure SCCP Parameters for Inbound Subscribers

1.On the GTT tab, click New at the bottom of the Globe Title Translate table.

2.In the GTT ID box, select an available number for the new entry, and then click the button.

3.In the GTT Option window, configure the following parameters to add GTT for inbound subscribers.

4.Click the button to update parameters to application servers.

Sub-parameter | Description (Click highlight SAVE after change) | Recommended Value
Flag | Enable or disable this GTT item. | Enable
Number Plan | Describe which numbering plan will be used for the global title. The numbering plan chosen will aid the routing system in determining the correct network system to direct the message. | GT
Translation Type | Translation examines the destination address and deciding how to identify it over the telephone network. | 0
Start GT Number | Specify the beginning IMSI of roaming subscribers. | Start IMSI
End GT Number | Specify the end IMSI of roaming subscribers. | End IMSI
Network Indicator | Nature of Address Indicator. It indicates the scope of the address value. | --
DPC | Point Code of remote network. | --
SSN | Subsystem Number. For IMSI and MSISDN, specify SSN to 6. | 6
Route Indicator | For the connected network, select Route on GT. | Route on GT
Address Indicator | Contribution of SCCP Address. | GT+DPC+SSN
Replace Start Digit | The start digit of the GT number to be replaced. | 0
Replace End Digit | The end digit of the GT number to be replaced. | 0
Replacing Number Plan | The type of the number to be output. | N/A
Replacing Digits | Replace the selected GT number range with these digits. | N/A

| Configure SCCP Parameters for IMDX Subscribers

1.On the GTT tab, click New at the bottom of the Globe Title Translate table.

2.In the GTT ID box, select an available number for the new entry, and then click the button.

3.In the GTT Option window, configure the following parameters to add GTT for the MSISDN range of IMDX subscribers.

4.Click the button to update parameters to application servers.

5.Repeat Step 1 to 4 to add GTT for the IMSI range of IMDX subscribers.

Sub-parameter | Description (Click highlight SAVE after change) | Recommended Value
Flag | Enable or disable this GTT item. | Enable
Number Plan | Describe which numbering plan will be used for the global title. The numbering plan chosen will aid the routing system in determining the correct network system to direct the message. | GT
Translation Type | Translation examines the destination address and deciding how to identify it over the telephone network. | 0
Start GT Number | Specify the beginning MSISDN/IMSI of IMDX subscribers. | Start MSISDN/IMSI
End GT Number | Specify the end MSISDN/IMSI of IMDX subscribers. | End MSISDN/IMSI
Network Indicator | Nature of Address Indicator. It indicates the scope of the address value. Choose the same network as MTP3 setting. | National
DPC | Point Code of local system. | --
SSN | Subsystem Number. For IMSI and MSISDN, specify SSN to 6. | 6
Route Indicator | For the connected network, select Route on GT. | Route on GT
Address Indicator | Contribution of SCCP Address. | GT+DPC+SSN
Replace Start Digit | The start digit of the GT number to be replaced. | 0
Replace End Digit | The end digit of the GT number to be replaced. | 0
Replacing Number Plan | The type of the number to be output. | N/A
Replacing Digits | Replace the selected GT number range with these digits. | N/A

| Configure VLR Parameters

1.Go to EMS >Configuration >NSS >VLR.

2.Click the button at the upper right corner.

1.On the System tab, configure the relevant parameters given in the following table.

2.Click the button to update parameters to application servers.

Sub-parameter | Description (Click highlight SAVE after change) | Recommended Value
IMDX Flag | Enable or disable IMDX service. | Enable
IMSI Prefix for OPPS | OPPS substitutes the IMSI prefix of the inbound IMDX users by the predefined pseudo IMSI prefix for HLR routing purpose. It should be different from the IMSI prefix of the local network or any other roaming partners' networks. | --

| Configure OPPS Parameters

1.Go to EMS >Configuration >NSS >OPPS.

2.Click the button at the upper right corner.

1.Click the IMDX tab, configure the relevant parameters given in the following table.

2.Click the button to update parameters to application servers.

Sub-parameter | Description (Click highlight SAVE after change) | Recommended Value
Exclusive Access | Exclusive access control command. | --
•Level | Exclusive access provides solutions to restrict the IMDX registration from a predefined range of users: •Normal: Full IMDX functions. •Exclusive Half: Prohibit the public (roaming) users from registration. •Exclusive Full: Prohibit both public (roaming) and hybrid users from registration. •Shutdown: Shutdown IMDX. Forbid all users from registration. | Normal
•Cause | In the exclusive access mode, the network sends a Location Area Updating Reject message to MS to indicate the cause of rejection: | N/A
Private Dialing Prefix | Reserve the number range for IMDX users by specifying the number prefix and attribute. Originating call with such dialing prefixes will be treated as private calls. | --

| Configure MSC Parameters for IMDX Private Dialing Prefix

Refer Enabling Mobile Call to configure IMDX Private Dialing Prefix in MSC parameters.

See Also

• Manage OPPS Subscriber

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