This past season in 2013 we ventured away from standard satellite telephone communication we have used in the past. We had troubles with the sat phones, due to our northern geographical location.
We were fortunate to get into the Delorme Inreach units, which have text, email and gps capabilities everywhere in our area. They can be used on their own or linked to your smart phone, giving us true 2 way communication. Your guide can communicate with our airplanes and basecamp throughout your day to day hunt, and for possible emergencies.
We found that these units were far more advanced than what we have dealt with in previous years and were very impressed with them. You may want to look into getting one for yourself, we feel they are a very valuable tool.