# SIPTRUNK SIP Trunk

SIPTRUNK was founded by telecommunications experts with over 50 years combined SIP trunking experience. SIPTRUNK called on this experience to bring you a platform that will propel you toward rapid success.

With SIPTRUNK, you don’t have to worry about the major upfront expense of purchasing your own softswitch or the monthly costs associated with hiring customer service and technical professionals. SIPTRUNK provides all of this for you.

**PortSIP PBX** integrates seamlessly with SIPTRUNK, allowing administrators to configure SIPTRUNK as a service provider directly within the PBX. This ensures stable, standards-based voice connectivity for enterprise and service-provider deployments.

PortSIP PBX includes built-in support for **SIPTRUNK SIP trunking**, making it straightforward to configure and deploy voice services.

***

### Prerequisites

To integrate SIPTRUNK with PortSIP PBX, complete the following steps:

#### Obtain a SIPTRUNK Account

* Create an account on the [SIPTRUNK platform ](https://www.siptrunk.com)to access SIP trunking services.

#### Log In and Configure SIPTRUNK Settings

* Sign in to the [SIPTRUNK customer portal](https://login.siptrunk.com/).
* Complete the required configuration to enable SIP trunking for use with PortSIP PBX.
* Ensure all **IP authentication and whitelisting requirements** are properly configured, as specified in the SIPTRUNK documentation.

***

### Topics Covered in This Guide

This article includes the following configuration topics:

* [Purchase a DID on the SIPTRUNK Platform](/portsip-communications-solution/configuring-sip-trunks/siptrunk-sip-trunk/purchase-a-did-on-siptrunk-platform.md)
* [Configure SIPTRUNK  IP Authentication Trunk](/portsip-communications-solution/configuring-sip-trunks/siptrunk-sip-trunk/configuring-siptrunk-ip-authentication-trunk.md)
* [Configure SIPTRUNK  Register Authentication Trunk](/portsip-communications-solution/configuring-sip-trunks/siptrunk-sip-trunk/configuring-siptrunk-register-authentication-trunk.md)
* [Configure Outbound and Inbound Calls](/portsip-communications-solution/configuring-sip-trunks/siptrunk-sip-trunk/configuring-outbound-and-inbound-calls.md)
* [SIPTRUNK SMS Integration](/portsip-communications-solution/configuring-sip-trunks/siptrunk-sip-trunk/siptrunk-sms-integration.md)


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://support.portsip.com/portsip-communications-solution/configuring-sip-trunks/siptrunk-sip-trunk.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.