> 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/protocols/mtp3-configuration-of-layer.md).

# MTP3 Configuration of layer

General guidelines for configuration of MTP3 include the following:

1. The MTP3 [general allocation](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/protocols/mtp3-general-configuration/README.md) must precede all other messages (other configuration MTP3 alloc, get, states and stats). The response of this message is a MTP3 handle.
2. The MTP3 [Userpart allocation](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/protocols/mtp3-userpart-configuration/README.md) must be made (with the MTP3 handle from step 1) for a particular variant. The response of this message is a MTP3 Userpart handle.
3. The MTP3 Linkset allocation must be made (with the MTP3 handle from step 1 and the Userpart handle from step 2) for a particular [OPC](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/signalling/opc/README.md) and a particular adjacent [DPC](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/signalling/dpc/README.md). The response of this message is a MTP3 Linkset handle.
4. The MTP3 Link allocation must be made (with the MTP3 handle from step 1, Linkset handle from step 3 and the unique identifier of the MTP2 Link) to connect with the MTP2 link layer. The response of this message is a MTP3 Link handle.
5. The MTP3 Route allocation must be made (with the MTP3 handle from step 1 and Linkset(s) handle from step 3) to create a self-route and a route to a specific or to a range of DPC. The response of this message is MTP3 Route handle.

### Configuration notes

General guidelines for configuration of MTP3 for a proper operation include the following:

* Step 2 can be performed for 1 to the maximum number of configured Userparts
* Step 3 can be performed for 1 to the maximum number of configured of Linksets
* Step 4 can be performed for 1 to the maximum number of configured Links per Linkset
* Step 5 must be performed for 1 time for the “self-route” and 1 to the maximum number of configured Routes


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