Hello,
I am well versed in PHP, JavaScript and integrating third party REST API to web app .
According to the project description the Channel Manager system has REST API, and I hope it is well documented.
This is how I shall do the task-
To make properly communicate via the REST API to the c. manager system , your Hotel/Property management system may need code tweaking. To do that I need to access the source code to understand and make plan implement it. after that Your application should automatically be synchronized with the Channel Management system.
Thanking You
Deep Rahman