Laptop mobile hotspot help

Ok...
I have a Dell Latitude E6540 connected to my company WiFi (work computer). When I turn on the mobile hotspot on the laptop I can connect my samsung S7 to it via WiFi. I can use the internet, yahoo mail, facebook, ect, but it will not let my phone do a WiFi call or send a text. I cannot figure it out. The first thing I thought was that my company has the internet secure and not allowing it. Well, I had my coworker fire up his cell phone mobile hotspot(T-Mobile) and connected my laptop to his phone. Still did not work. It has to be some setting in the computer that is not allowing the call to go through but everything else to work since I eliminated the secure network factor.

Any help would be appreciated.

Thanks
 
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