Hi all, I have an interesting situation. I need to be able to connect a VOIP ATA to a mobile hotspot.

The hotspot I am using is a cellphone, set on Tethered mode.

The ATA is a GrandStream HT801

I had the great idea of using the TP-Link RE315 (AC1200) extender. I configure the RE315 to connect to the hotspot as the host network, then connect the HT801 to the RE315's Ethernet port. The HT801 is Ethernet only.

To test, I first connected an Ethernet computer via cable to the RE315 and then went to 192.168.0.254 and configured the RE315 to connect to the cellphone's hotspot. This worked. I tested the Internet connection on the desktop and was able to navigate correctly, bringing up various random Websites.

However, when I disconnect the desktop and in its place I connect the HT801, the device is unable to connect correctly. The HT801 has three lights:

Power - this lights up OK

Internet - this also lights up OK, indicating that it is connected to the Internet

Phone - this LED stays dark, indicating that the HT801 could not connect to the service.

That last LED perplexes me. I tried with two different cellphones and got the same result. Has anyone successfully connected a VOIP device to the Internet using the RE315 as a bridge? Or any other similar TP-Link product?

Any ideas are welcomed. Currently, I am working on getting a switch so that I can connect the HT801 and desktop computer to the RE315, but the power supply won't arrive till later of the March 23rd week. I would like to see how the HT801 gets configured when it connects to the RE315. Thank you for your time and expertise.