1. DcFromWv's Avatar
    If t-mobile doesnt get service here, and i can sometimes get roaming service.
    can i still use wifi calling on the 8900?
    do i need t-mobile service to?

    please answer!
    03-03-09 09:50 PM
  2. aristile's Avatar
    Yes, you can use WiFi even when you can get no cellular service. That's basically exactly the situation UMA was designed for. It works independent of a cellular connection.
    03-03-09 11:51 PM
  3. acerunner's Avatar
    what aristile said. When i'm indoors at home or at work, my cell signal is weak. So it automatically switches to UMA since my wifi signal is stronger. However, the quality is slightly worse IMO. Its sorta more static or a robotic type of voice. Not sure if that's just me though.
    03-04-09 12:00 AM
  4. aristile's Avatar
    The sound quality problems are likely settings in your router and/or interference with your connection. Try changing your wireless channel on your router. For more information, check the WiFi Guide link in my signature.
    03-04-09 12:19 AM
  5. acerunner's Avatar
    i've gone through that already. got my BB configured according to that. the distortion occurred while i was at work, and i have no control over the router there. might be just a slow connection at work. We are capped at 40KBps. The distorted sound would be consistence with a lowered sound bitrate. Does UMA dynamically change bitrates for phone calls if a slow connection is detected?

    at home, i go in and out of UMA so its harder to fully test it. but it has transitioned from uma to cell properly with nothing more than a click sound in between. No distortion here. Although when not on a call, i seem to have a hard time maintaining connection. Not sure if I need need to open ports? Does the BB use ports that are out of the ordinary?
    Last edited by acerunner; 03-04-09 at 01:50 AM.
    03-04-09 01:46 AM
  6. onel0ve's Avatar
    if you use UMA to make calls, does it use your minutes?
    03-04-09 04:20 AM
  7. acerunner's Avatar
    yes it uses minutes just like regular voice plan (ie night and weekend, fave5, m2m still free if applicable).
    unless you have TMobile@Home for $10/month, then UMA calls are free.
    03-04-09 04:32 AM