Hi. I'm located outside the U.S. and use an Obihai110. I used to use the device with Google Voice and Callcentric, but now I just use it with Callcentric. The issue that I have is with calls that originate outside the country where I live, dialing into my local home phone number (in other words, calls that don't come in through a VOIP provider, such as Callcentric). The Terminal ID for inbound calls that come in from outside this country are labeled as Line1 calls. Local inbound calls that originate in this country are also labeled as Line1 calls. In this country, home phones and cellphones use 8-digit phone numbers. None begin with a 0 or 1, as far as I know. The unknown, problem call that I received at 4:00 A.M. this morning came from the U.S. - 001315256XXXX. The Terminal ID was Line1. So my question is, can I go into the Obihai110 settings for Line1 and block all incoming calls that begin with a 0? [I believe all international calls from one country to another are prefixed by at least one 0, at least the ones that originate from the U.S. do.]