How to Connect two Grandstream UCM via SIP Trunk

Effortless Communication: Connecting Grandstream UCM via SIP Trunk for Seamless Internal Extensions Calling
In the realm of unified communication, Grandstream’s UCM series stands out as a reliable and feature-rich solution for businesses seeking seamless connectivity. This article aims to guide you through the process of connecting your Grandstream UCM via SIP trunk, enabling effortless internal extensions calling. Follow these step-by-step instructions to enhance your communication infrastructure and streamline internal collaboration.

Below are the youtube link with detailed stepby step explanation.

Step 1 – Create SIP Trunk on UCM Site A and UCM and Site B
Step 2 – Create Outbound Route to Call another Site UCM extensions
Step 3 – Create Inbound Route to recive calls from another site to local extensions.
Below are the Youtube link they have explained very well.