The simplest way is:
if you are using obitalk for configuration:
under trusted callers:
1. Add the california number
2. local phone that would call obi.
Make sure you have attached the localtelco service into the LINE port of Obi.
Adding a number to trusted caller list means that when they call, they will be greeted by the Attendant inside Obi. they can choose option 2(to make a new call).
so, for the Route: california->local Philippines number:
at AutoAttendant:choose option 2, and just dial the local number. (it will go through the line port by default)
for route:local philippines->USA:
call the local phonenumber(Service attached to line port)..Auto attendant would greet you.choose option 2. Now you can make a call to USA using service provider 1or 2(where ever you have google voice setup):**1 <us number> or **2<us number>.
the above is bridging via attendant.
if you want automated routing, the setup is slightly more involved.since you say that you are new, you might want to check this first and see if it works, and then get on to automated routing next.