T-Mobile Concord II User Manual page 58

To configure which calls use Internet calling:
You can configure your phone to place all calls using Internet calling (when you're
connected to a Wi-Fi network), just calls to Internet calling addresses, or to ask each
time you place a call.
. Touch the Home Key >
. Touch Use Internet calling.
3. Touch the Internet calling option you want.
To configure your phone to receive Internet calls:
By default, your phone is configured to make Internet calls, but not to ensure that you
will receive them. But you can configure your phone to listen for Internet calls made to
an Internet calling account you added to your phone.
. Touch the Home Key >
. Check Receive incoming calls. Checking this setting will reduce your battery life
between charges.
> Menu Key > Settings.
> Menu Key > Settings > SIP Accounts.
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