T-mobile UMA sporadic w/ Motorola NV510 Passthrough mode Hi, AT&T "upgraded" me to U-Verse using a Motorola NVG510 router.
I am using the router as just a modem, in "passthrough" mode, connected to my Linksys E3000 router, as per instructions I found on this web page:
The firewall on the NV510 is set to:
then the MAC address of the E3000
The passthrough is working fine. I've got the internet. Except that now, after working fine for a week, UMA is suddenly not connecting any more.
I have tried resetting my E3000 router, and resetting the U-Verse NVG510 router, to no avail.
My blackberry can't do VOIP calls now, so I effectively have no cell phone service.
How do I begin to troubleshoot this? Should I call T-Mobile? AT&T? A different forum? Any help on how to get my UMA working again would be appreciated. Thanks.
I'd start with T-Mobile since they may be able to access record of your login attempts. AFAIK, they still officially support UMA so they have some responsibility for diagnosing the issues.