> For the complete documentation index, see [llms.txt](https://prosbcdocs.telcobridges.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://prosbcdocs.telcobridges.com/telecom-references/ss7-and-signalling/point-code.md).

# Point Code

A Point Code (PC) is an address in the SS7 network. It can reference a [SSP](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/signalling/sp/README.md), STP or SCP. Depending on the [SS7 variants](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/protocol-type/README.md), point code may have different [Length](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/dpc-length/README.md).

The peer SS7 [SSP](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/signalling/sp/README.md) address is referred as Destination Point Code or [DPC](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/signalling/dpc/README.md).

The local SS7 [SSP](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/signalling/sp/README.md) address is referred as Originating Point code or [OPC](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/signalling/opc/README.md).

We also sometimes use the term Adjacent Point Code (APC) to identify an entity connected directly to the unit with SS7 links.

The Point codes can be represented in different formats, depending on the [SS7 variants](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/protocol-type/README.md):

* For ITU variants, the [Point Code length](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/dpc-length/README.md) is 14 bits, in a format 3.8.3
* For Japanese variants, the [Point Code length](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/dpc-length/README.md) is 16 bits, in a format 7.4.5
* For ANSI and Chinese variants, the [Point Code length](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/parameters/dpc-length/README.md) is 24 bits, in a format 8.8.8

Some regions use different formats than the dotted notation. It can either be decimal or hexadecimal. For example:

| Variant | Dotted Notation | Decimal  | Hexadecimal |
| ------- | --------------- | -------- | ----------- |
| ITU     | 2.14.1          | 4209     | 1071        |
| ITU     | 7.250.7         | 16343    | 3FD7        |
| ANSI    | 251.3.1         | 16450305 | FB0301      |

You can use the tool Point Code Converter (PCC), from LogMeTT, to convert between the different formats.

* [LogMeTT.com](http://logmett.com/index.php?/download/point-code-converter-13.html)

### Configuration

To configure Point Codes:

* [Toolpack V2.8](https://github.com/telcobridges-main/tmedia-wiki/tree/main/tmedia/configuration/creating-ss7-point-codes/README.md)
* [Toolpack V2.7](https://github.com/telcobridges-main/tmedia-wiki/tree/main/tmedia/configuration/creating-ss7-point-codes/README.md)
* [Toolpack V2.6](https://github.com/telcobridges-main/tmedia-wiki/tree/main/tmedia/configuration/creating-ss7-point-codes/README.md)


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