I recently got T-Mobile home internet with the NOK 5G21 Gateway and have had no issues when it comes to personal use. Yet, after setting up my work computer and phone I am having issues. I work for a health insurance company and we have to be set up to their internal network. I am able to access my works internal sites but my Cisco IP 8811 phone will not register. I spoke to my company IT and they stated I need VoIP, I got the Ooma Telo Air 2 and work phone is still not registering. I am not sure what to do and my work IT department had no solutions. Has anyone had similar issues?
They may be blocking common VIOP ports. I just called my personal cell from my work’s Cisco Webex Soft Phone client (while using the company VPN), and it works for me. Find out what ports your particular phone uses, and call T-Mobile and ask. You may need to talk to a second-level tech support agent as port numbers are going to be above the standard call-center pay grade. Good luck!
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