Treo 650 call waiting and hold call problems, here’s how I “fixed” it!

I was never able to use my call waiting function on my unlocked GSM Treo 650. It always froze up until one of the lines disconnected. Here’s how I fixed it:

1. Call AT&T (I’m a former Cingular customer) and have them deactivate and reactive your call hold and call waiting features.
2. Follow this URL and try out the instructions in the “Delete other software with a hard reset and data restore” section:
   http://www.palm.com/cgi-bin/cso_kbURL.cgi?ID=38867
3. I think some of my network/carrier/preferences databases had incorrect settings and/or were corrupted. I only restored the DB’s and apps I knew I wanted/needed.
4. After all of this my call waiting is working as expected and I didn’t lose any data.