> 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/configuration-details/configuration-by-use-case/sip-trunking-configuration/sip-trunk-configuration-instruction-with-fusionpbx.md).

# SIP Trunk Configuration Instruction with FusionPBX

## Introduction

This article provides you with a step-by-step SIP Trunk Configuration of ProSBC with FusionPBX systems, using the Web Portal configuration tool. Complete the general installation configuration steps, before you begin configuring your specific scenario. In this article the FQDN (fusionpbx.telcobridges.com) is configured in the FusionPBX server. If you do not use an FQDN, you can use the FusionPBX IP addresso. Learn how to configure the SIP Trunk in FusionPBX for ProSBC from [FusionPBX Trunk Creation](/configuration-details/configuration-by-use-case/sip-trunking-configuration/fusionpbx-sip-trunk-creation.md)

## FusionPBX SIP Trunk Example

<figure><img src="https://docs.telcobridges.com/w/images/thumb/b/b4/Fusionpbx_Trunking_1.png/800px-Fusionpbx_Trunking_1.png" alt=""><figcaption></figcaption></figure>

**Configuration Steps**

| <p>(Step 1)<br>Create IP Network</p>                                                                                                                                                                                                                                                                                  | <p>(Step 2)<br>Create Protocol Stack</p>                                                                                                                                                                                                                                                                                                                                                  | <p>(Step 3)<br>Create Call Route</p>                                                  |
| --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------- |
| <ul><li><a href="/pages/4Da0Y3tkR3YPkiQiMJq4">Configuring an IP Virtual Port</a></li><li><a href="/pages/7IjxZtyxERk988tkvjsb">Configuring a VLAN</a></li><li><a href="/pages/ZYQWWTQHLo88LCavuZ5C">Configuring IP Interfaces</a></li><li><a href="/pages/NQKpeugKPfvYlTTGh7AK">Create an IP port range</a></li></ul> | <ul><li><a href="/pages/NQKpeugKPfvYlTTGh7AK">Create an IP port range</a></li><li><a href="/pages/VG69umnT77U6581Yi96D">Create a SIP stack</a></li><li><a href="/pages/jvLDDqDqfgCJs0rS860W">Create a SIP transport server</a></li><li><a href="/pages/0aNbDh4Fvt05NbBm5vzb">Modify profile</a></li><li><a href="/pages/caC9hju5KNDcBruRFiOH">Allocate a SIP NAP</a></li></ul><p><br></p> | <ul><li><a href="/pages/d4TYj9I5RiFaLe6xDXIx">Create a first call route</a></li></ul> |

## NAP Configuration

* See [Create SIP NAP](/configuration-details/configuration-by-web-portal-category/network-access-points-nap.md)
  * At this point, you must create two NAPs: One SIP NAP will be a FusionPBX NAP and the other NAP will be for a SIP trunk provided by ITSP.<br>


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