> For the complete documentation index, see [llms.txt](https://support.portsip.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.portsip.com/portsip-communications-solution/configuring-sip-trunks/questblue-sip-trunk.md).

# QuestBlue SIP Trunk

[QuestBlue SIP Trunking](https://questblue.com/sip-trunking/) enables businesses to achieve high-quality voice communications with a pay-as-you-go pricing model, helping reduce costs by eliminating charges for unused minutes.

PortSIP PBX provides built-in integration with QuestBlue SIP Trunking for both voice calls and SMS/MMS, allowing administrators to configure and deploy services quickly and easily.

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### Topics Covered in This Guide

This guide covers the following configuration topics:

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