VOIP on high speed gateway

I'm getting rid of t-mobile internet.  A year waiting on a fix for this.  I'm done.

I just switched to the T-Mobile internet, and I cannot get my google phone to work. I get a dial tone. but when I dial any number, I get the message that network IP is not available. . 

Person wrote:

Person wrote:

revdrwebb wrote:

Still no joy with this.  Cisco VOIP box is plugged into the lan port on the 5G router.  I get dial tone but can't call.  It worked fine on the old LTE Gateway.  

Just spoke with a girl called Crystal from the customer service . Waiting time was zero minutes. She told me that they are aware of the "problem" that many VOIP devices can't function by default. She also assured me that it's a matter of sending request to register a particular device with them (in my case it's a Grandstream GS-GXP2140 VOIP desk phone). Which she did sent.

She collected my download and upload speed (asked me to test it in real time).

I am still kind of skeptical based on reviews here that say that all these reps do is lying to you. However, she told me to wait 24-72 hours and gave me "complaintID" I could use to  track the status of the request.

I’ll keep you guys posted.

Ok, here is my report: nothing happened. Nobody contacted me, the problem wasn't fixed. At all. I returned the device.

That's because their customer service is a joke. They either knew their setup was going to have these kind of issues and pushed it out anyway without telling the consumer or they were inept and had no idea that this would not work with most major VoIP software vendors. Incompetent either way. Toodaloo, TrashyT-Mobile. Switched to Verizon years ago and never been happier with a cellular service provider.

TMO offers a promotion for Ooma VOIP so one can assume VOIP works on their gateways.

I use voip.ms with a Grandstream DP750 DECT basestation and 5 DP 720 handsets.

Service has worked fine since the inception of my T-Mobile service. I have the Acadian gateway.

We use Google Voice via an obi202 device. It's worked fine both via ethernet and via the wifi adapter. This is with the Nokia gateway over the past 5 months.

If you’re using a VOIP device that’s plugged into the ethernet on the gateway, it is, of course, important to power cycle the device so that it will acquire an ip address from the gateway’s router.

I recently installed the Nokia 5G21. It came reconditioned from T-Mobil ISP customer service. It has firmware 1.2104.00.0286 which is the second to most recent. I have tried both the Grandstream HT702 and an Obi202 with the latest firmware update without success. I have tried the Obi202 both directly connected to the gateway and connective via an Obiwifi dongle. In all cases, T-Mobile's admin app shows the devices. Obitalk shows the device registered with the VOIP provider both through its web portal and the device admin page. The VOIP provider (Voipo.com) shows both the Grandstream and Obi devices registered. Like others, I get dial tone, but no outgoing or incoming calls. Weirdly, the message waiting indicator did work when I left myself a voice message. All these devices worked fine on my old T-Mobile 4G gateway.

I have seen much discussion of DHCP dynamic IP assignment versus static IP addressing, but do not see how to achieve that on the gateway nor why it would make a difference as the adapters are getting addresses that allow them to contact their respective web hosts.

I have the same problem with my voip provider. Any fixes coming soon?