bryanmc57
You need to provide a little more info to get a couple of options. And for the record, I'm no expert, just someone with a little info.
You did say making 'calls back to the US' as opposed to making yourself available for someone trying to contact you in an emergency.
For making calls back to US, Skype is hard to beat (skype.com). But - while there are ways of working around this - you should assume that you'll have to take notebook computer. Read on.
- Calls are 2 cents a minute.
- Call quality is not bad (are you technical? - it's a peer-to-peer file sharing network over millions of desktop computers. That sounds primitive but it works. It's not Vonage with their proprietary servers, but it's not bad).
- You get an account for free, you charge up your account with a minimum of $10 in credit. As you make calls, the account balance declines.
- As noted, a computer is required, and a relatively fast internet connection. The most popular thing to do (you'll see folks doing this everywhere) is take a notebook computer and use your hotel's wireless internet access. No access at the hotel (?), have lunch at a restaurant where they have free or nearly free access (like Rock N Java). Don't like that, go to the calling station on the bottom floor of the Hotel Barracuda with your computer and hook up via their ethernet and call away (they charge for internet time, the price is so reasonable I've forgotten it).
Incidentally, there are numerous places that offer the same service as the calling station at the Barracuda.
- And why would you take a computer if some of these places have a computer already? Because they may not want you to install Skype on their system. Because when you download and install Skype in Mexico, you might end up looking at software written in Spanish.
Enough about Skype.
Don't want to take a computer (?), go to the calling station at the Barracuda (or any of the many other calling shops) and make a call using their regular phone (regular - it's probably voice-over-IP like Vonage, as opposed to analog - cheap and it works good). The price is ...sufficiently low that I've forgotten it. But not as cheap as Skype over your hotel's free wifi.
There are actually a number of cheap solutions with cell phones. Including using text messaging (SMS) - very cheap when all you need to say is 'we've arrived safely'. You need to post info like: you do or do not have a GSM quad band phone.
Incidentally, if you do have a GSM phone and you use ATT, you call them up, request 'international provisioning' order ATT World Connect Mexico (about $6/mo)' then you can make and receive calls for something like $0.60 per minute. When you go back home, wait for the bills to post from mexico to ATT and then discontinue ATT World Connect Mexico. They're happy to oblige.
That's just a few of the solutions. I've run out of gas. Hope this helps.