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

# SCCP Configuration of layer

General guidelines for configuration of SCCP for proper operation include the following steps:

1. The SCCP [general allocation](https://tmediadocs.telcobridges.com/other-pages/protocol-stacks-ss7/create-a-sccp-stack) (see Note below) (TB640\_MSG\_ID\_SS7\_SCCP\_OP\_ALLOC) must precede all other messages (other configuration SCCP alloc, get, states and stats). The response of this message is a SCCP handle.
2. The SCCP [network allocation](https://tmediadocs.telcobridges.com/other-pages/protocol-stacks-ss7/create-a-sccp-network) must be made (with the SCCP handle from step 1) for a particular network identifier with a particular variant, self point code and subservice field type. The response of this message is a SCCP Network handle.
3. The SCCP [LSAP allocation](https://tmediadocs.telcobridges.com/other-pages/protocol-stacks-ss7/create-an-sccp-lsap) must be made (with the SCCP handle from step 1, network handle from step 2 and the unique identifier of the MTP3 userpart) to connect with the MTP3 userpart
4. The SCCP route allocation must be made (with the SCCP handle from step 1 and the lsap handle from step 3 for a particular variant, replicated mode and DPC
5. The SCCP [userpart allocation](https://tmediadocs.telcobridges.com/other-pages/protocol-stacks-ss7/create-a-sccp-userpart) must be made (with the SCCP handle from step 1 and the network handle from step 2 for a particular subsystem number
6. The SCCP [GTT association allocation](/telecom-references/ss7-and-signalling/sccp/gtt-association-configuration.md) must be made (with the SCCP handle from step 1) for a particular global title association
7. The SCCP [GTT address map allocation](/telecom-references/ss7-and-signalling/sccp/gtt-address-map-configuration.md) must be made (with the SCCP handle from step 1 and the Gtt asso handle from step 6) for a particular global title address map

### Configuration notes

* Step 2 can be done for 1 to the maximum number of configured Networks
* Step 3 can be done for 1 to the maximum number of configured LSAPs
* Step 4 can be done for 1 to the maximum number of configured Routes
* Step 5 must be done for 1 to the maximum number of configured Userparts
* Step 6 must be done for 1 to the maximum number of configured GTT Asso
* Step 7 must be done for 1 to the maximum number of configured GTT Addrmap


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