[Galaxy Note 10.1 General] mke1973:
Not really, but if you're leery of setting up a pbxes account, use the Csipsimple wizard for callcentric.

First step, after downloading Csipsimple to your note, is to go to http://www.callcentric.com and sign up for an free account to communicate with other members (don't worry about having a phone number, in step 2, you'll sign up for a free Washington state phone number at Ipkall.com; another advantage of this option at callcentric is that you don't need to worry about a monthly e911 regulatory fee because callcentric isn't linking you to the public phone network). Once you are registered at callcentric, login and write down your "Callcentric #", which is a numeric account id that starts with 177, you'll need this for step 2.

Second step, go to http://www.ipkall.com and choose to sign up. this will give you a page that allows you to choose an area code within Washington state that you want for your free phone number. In the SIP URI field, in the box for username put your Callcentri # --that numeric account id that starts with 177-- for the hostname box in the SIP URI field, put in.callcentric.com (do not leave out the initial in. ). Put the email that you want Ipkall to contact you at; however, DO NOT USE GMAIL OR ANOTHER FREE WEBMAIL PROVIDER, USE AN EMAIL ISSUED TO YOU BY AN ISP. I suspect there have been fraud issues that have force Ipkall not to issue numbers to anyone using gmail or similar free webmail service. The password field is for a 4-digit PIN that you'll use to log into your Ipkall account once you've been assigned a free phone number. If you've used a valid ISP-issued email, you should get a confirmation email with a free Washington state phone number within a matter of minutes. Save that email and write down the phone number somewhere. (This number needs to be used monthly or it will expire, but this shouldn't be a problem if you're an active Google Voice user.)

Step Three, launch Csipsimple on your note and follow these instructions to setup Csipsimple (basically, you'll use the automatic wizard for Callcentric and simply plug in that numeric user id that starts in 177 and the password that you chose for your callcentric account). http://www.callcentric.com/support/device/csipsimple FYI, for WIFI only tablets, don't choose to integrate with Android since there's no Android dialer. Once you've input the data into the callcentric wizard, your account in Csipsimple should show that it's registered. Time to make a phone call to your free Ipkall number to make sure everything works. If you've input all the information correctly, Csipsimple should begin to ring. If that happens, then link your new Washington state phone number with your Google Voice account.

Addendum

The free callcentric account method above gets you incoming via Csipsimple. For outgoing calks, you'll need the Google Voice app and you'll need your Ipkall number linked to your GV account. If there's interest in using Csipsimple with pbxes or sipsorcery, which you can use for both incoming and outgoing calls, let me know and I can start a separate thread. These methods are slighly more involved, but if you're at xda developers forums, you're adventurous.