Subsystem Number

The Subsystem Number object pane is created under the SCCP/TCAP object. The Subsystem number along with the Point Code is used by SCCP to determine routing between a local application and a remote application. The Subsystem Numbers, which range from 0-255, can be selected through a drop down menu in the Subsystem Number Pane. From the subsystem number, the Adjacent Translator can be configured.

 

ClientView Pane

IMG EMS > Logical IMG > IMG Name > SS7  > SS7 Stack > SCCP/TCAP > Subsystem Number

SC_Subsystem_Number.png

 

Maximum Objects

1 Subsystem Number object per SCCP/TCAP object.

 

Related Topics and Dependencies

SCCP/TCAP

Adjacent Translator

SS7 Stack

Message Waiting Indicator

 

Field Descriptions

Subsystem Number

Select from a drop down menu which Subsystem number will be used for routing. See Table below

 

Subsystem Number

Subsystem

2

reserved for ITU-T allocation

3

ISDN user part

4

OMAP

5

MAP (Mobile Application Part)

6

HLR (Home Location Register)

7

VLR (Visitor Location Register)

8

MSC (Mobile Switching Center)

9

EIC (Equipment Identifier Center)

10

AUC (Authentication Center)

11

ISDN Supplementary Services

12

reserved for international use

13

Broadband ISDN edge-to-edge applications

14

TC Test Responder

15-31

reserved for international use

32-254

reserved for national networks

 

SSN Name

Displays the following information:

SS7 Server - Which Node SCCP/TCAP is being configured on.

Stack ID - Which stack SCCP/TCAP is configured on.

Subsystem Number - Which subsystem number is associated with this stack.

 

SSN Status (Subsystem Number Status)

The Subsystem Number Status field displays the availability of service to the nodes of the network. The two states are as follows:

Prohibited  - To change the state hit the Allow button located below the Subsystem Number Pane. See screen capture below

Allowed (Default) - When the Subsystem Number Pane is created, the status is by default set to Allowed indicating the service is initially available. To change the state, hit the Prohibit button located below the Subsystem Number Pane. Once the GCL Service has been assigned to a SIP Channel Group the default will be set to 'Allowed' for that specific SSN. See screen capture below.

 

SC_TCAP_MWI_Buttons_Prohibit_Allow.png

 

Buttons

The Allow and Prohibit buttons change the state of the Subsystem Number configured.

Prohibit

By hitting the Prohibit button, the Subsystem Number status will change to Prohibit and the Subsystem Number Service will be unavailable to the SS7 network by sending the SSP message to remote side.

Allow

By hitting the Allow button, the Subsystem Number status will change to Allowed and the Subsystem Number Service will be available to the SS7 network by sending the SSA message to the remote side.