Build VoIP SIP phone provisioning web site

We have a multi-tenant PBX system and need a simple SIP phone provisioning tool written in Javascript Node.JS, using Angular or React, running on a MEAN/MERN stack. This will not be integrated with the PBX, however our B/OSS system will add, suspend, and delete tenants and extensions to this new system you will create via a REST API. A commercial example of this same type of system you will be making is at [login to view URL] if you would like to make a trial account to see how it works. Also, I want to mention that the FusionPBX github has some great PHP code examples of making a provisioning UI interface at [login to view URL] including phone device templates. Unlike the example site given, we will only need support for Yealink and Snom telephones, and also only mostly features related to assigning lines and configure soft keys. We can hard code many of the settings for our system as a template instead of the UI supporting a full configuration. This will make deployment easier to our customers. Also we only need http and https, not tftp, for configuration. One additional and simple feature will be to perform a REST API call to our PBX server to tell the extension that was reconfigured via SIP NOTIFY that it needs to reload its configuration. Please bid if you can help us make a simpler phone auto provisioning system for our clients.