# System Id

The SystemId is a *unique id* representing an entire system. This field is also known as the [TBX\_GW\_PORT](/appendices/appendix-a-glossary/glossary-toolpack/glossary-tboamapp/glossary-tbtoolpack-service/system-id/gateway-port.md) or [TbxGwPort](/appendices/appendix-a-glossary/glossary-toolpack/glossary-tboamapp/glossary-tbtoolpack-service/system-id/gateway-port.md).

It allows multiple system to co-exist on the same IP network.

It is also used as http port on localhost to access TBToolpack WebPortal.(ie: [http://localhost:12358](http://localhost:12358/))

The SystemId is also the [TBX\_GW\_PORT](/appendices/appendix-a-glossary/glossary-toolpack/glossary-tboamapp/glossary-tbtoolpack-service/system-id/gateway-port.md) UDP port use to control the Tmedia units.

```
Range: 12358-12458
Default: 12358 (TelcoBridges strongly recommends that this setting be left at its default value)
```

All TBToolpack installations part of the same system must use the same SystemId.


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