Qnewbie

To get an Obi110 and register an obitalk account, setup the Obi110 in your office and Obitalk in you mobile. You can dial out with following:

Mobile => Obitalk => Obi110 => landline@office => your client

For more detail, please check the VOIP lab/OBi forum.

Qnewbie

如果客戶打我公司電話,我想起android app裡接聽,ok嗎?
可不可以同一時間公司枱頭電話響和android apps phone響?

I think it should be OK for both.
http://www.obitalk.com/forum/index.php?topic=1103.0

Ask other members for stability issue as my OBi110 is not used in my asterisk.