There could be a number of reasons why I might not answer my phone. If you are calling my tablet’s number – you will never reach me. You would get an error message when calling the tablet.
When calling the Google Voice number (+14122532956), such calls will be based on rules. If you are an anonymous caller, you will go straight to voicemail. If you are someone not in my contacts, I might not be able to answer the phone. I might also be on another call. If this is the case, I will not take your call as I feel this is rude to put someone on hold just to answer another call. If you are in my contacts, you will ring my primary phone which I have with me unless it is charging. If I don’t answer that phone, it is likely that I am charging the phone, on the phone with another caller, or addressing an issue that needs to be addressed immediately.
If you call, and I don’t answer – leave a message. I will typically return the call within a few moments. If you leave an SMS message, I might not get it right away (dependent on the number you sent the message to).