I apologise in advance for the stupidity of this question as I am new to VOIP.
I recently registered for a 2talk voip account and was allocated an 028 number (the free plan). I downloaded the software from the 2talk website and can make outgoing calls to a landline, however, when I try and call the 028 number with my mob. or land line, it doesn't seem to go through. There is no credit in the account at the moment. Do I have to put credit in to receive in coming calls?