Internet service and VoIP

@Zach4301  I'm not technical either, so I don't fully understand your VOIP setup with T-Mobile Home Internet.  Mine is a very simple, but it has been working flawlessly since I set it up 16 months ago.

I have a Grandstream HT801 ATA https://www.grandstream.com/products/gateways-and-atas/analog-telephone-adaptors/product/ht801  

I use it with CallCentric. The Callcentric website has very clear setup instructions on how to set up a number of ATAs. https://www.callcentric.com/support/  I have an outbound and inbound call plan and voicemail. It's just to have a landline type phone in the house and it's $2.95/mo.

Like I said, so far so good ;)

I have used Vonage as the VOIP for about 2 years now with no issues. It would be great if T Mobile's VOIP would work with it, but I found a viable work around and was able to keep my home telephone number.

@henry51 my VOIP did work for 2 years and here is what I know without being technical since I'm not. I had a voip provider and TMHI, it was set up as a 'mirror' at home which copied my work station at the office. Since then my provider stopped allowing 'mirroring' and I had to use my own MAC address for my home and a MAC address for my office so it could be 'serviced properly'. So somehow TMHI wasn't able to identify the mirroring setup and allowed it to pass but once it was set up with its own Mac address the gateway knew and blocked it. I took my home phone into work and it works fine, just not when connected to tmobile.

@Zach4301 Was your VOIP working with TMHI and then stop working?  What was your VOIP setup with TMHI before it stopped working?

I officially canceled my TMHI today and switched to competitor who allows VOIP. Tmobile asked why I'm canceling and they said sorry we don't offer it but maybe in the future we can upgrade our services. 

I'm not sure if this is even legal! 

ISPs do not have the right to block free access to the internet.

This will cause a monopoly and violates United States Antitrust Laws!

Thanks!  I’ll make sure to post to this thread if/when my VOIP stops working.

henry51 wrote:

@DaveD-VA  Do you have any theories on why some VOIP with T-Mobile Home Internet setups work fine, and then stop working?  My VOIP has always worked fine and still does. What would need to change with my TMHI for my VOIP setup to stop working?  ¡Gracias!

I'm no expert, but my research points to either port blocking or CG-NAT IP addressing.  Why it worked for a year+ and then failed is a mystery to me.  TM may have rolled out a change, either to my device or to my local infrastructure.  With them refusing to even acknowledge the problem, it's impossible to know.  Also, the way they they limit your access to the router, diagnosing there is impossible.

 Enjoy your TMHI while VOIP works and hope that they don’t screw it up. 

@DaveD-VA  Do you have any theories on why some VOIP with T-Mobile Home Internet setups work fine, and then stop working?  My VOIP has always worked fine and still does. What would need to change with my TMHI for my VOIP setup to stop working?  ¡Gracias!

I'm convinced that T-Mobile is the problem, I've found several similar complaints about T-Mobile. It seems to be either CGNAT addressing or port blocking. I'm no expert on either. I took my VOIP box to a friend, who does not use TMHI, and it worked fine at his place.

T-Mobile refuses to acknowledge the problem or even connect me to someone who can speak to it, I get the mindless phone support agents who tell me to reboot.

After being very happy with T-Mobile HI and using a working VOIP system. I'm unfortunately forced to drop TM and get Internet elsewhere.

I wish TM would at least acknowledge the problem.