I’m currently using CallWave as my VoiceMail service for my cellphone (instead T-Mobile) because of the transcript function, but now that I got my Google Voice Invite seems that I don’t need CallWave anymore. It’s a great service, and if you don’t trust Google you can try CallWave (But is not free)
This is how I managed to setup Google Voice and my cellphone. To forward your cellphone voicemail to Google Voice you need to use these activation codes, depending on your company:
AT&T Cingular, T-Mobile, GSM network
Verizon, CDMA network
(The number in bold is your Google Voice number)
Press Send or Talk or Enter on your to dial the number.
Now you need to go into your Google Voice “Settings” area, then “Phones” tab, click “Edit” on your cell phone. Then select “Show Advanced Settings”. Select the “No” radio button for “Requires pressing star during greetings”.
Automatic login will be disabled for this phone when you call so you will have to press the * key and enter your pin if you want to check messages in the future.
Thanks to California from the GrandCentral Help Group, through his answers I was able to accomplish this task.
Any questions you can contact me at alexsauceda(at)gmail.com.