BlackBerry Forums Support Community               

Closed Thread
LinkBack Thread Tools
Old 07-17-2008, 09:08 AM   #1 (permalink)
Thumbs Must Hurt
Join Date: Jul 2006
Model: 9550
Carrier: VZW
Posts: 139
Post Thanks: 0
Thanked 0 Times in 0 Posts
Default Cell Rove-in Failures w/T-Mo

Please Login to Remove!

Does any else experience a ton of UMA to GSM hand off failures??

I have my phone set to prefer the GSM/EDGE network. In my house where the T-Mo network is weak, but still there (ie never lost a signal with any non-UMA phones) my 8120 switches over to UMA on occasion... Anytime I start a call on UMA and enter an area of my house with strong GSM/EDGE signal the call will drop as the Blackberry tries to switch back to GSM. The WiFi diagnostics screen confirms this, zero GSM->UMA failures, numerous UMA->GSM failures.
Old 07-17-2008, 11:27 AM   #2 (permalink)
BlackBerry Extraordinaire
Join Date: May 2007
Location: New Mexico
Model: 8320
Carrier: T-Mobile
Posts: 1,461
Post Thanks: 0
Thanked 0 Times in 0 Posts

If the cell signal is weak that could explain why the handover fails. It would probably work better to set Wi-Fi as the preferred method of communication.

Also, if your handset is off the cell network for more than 4 hours (I think that is the time frame) you're purged out of the system so when you go to roam from Wi-Fi back to the cell network the handover will most likely fail.

Something like that, I remember reading while working for T-Mobile that handover failures could be caused by being off the cell network for x amount of hours. But it's been a while and I've replaced a lot of that information in my brain with newer information since. :P

Closed Thread

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Copyright 2004-2014
The names RIM and BlackBerry are registered Trademarks of BlackBerry Inc.