Please familiarize yourself with this document. You can dial the United States directly from a hotel phone but this can be expensive. ATT, Sprint, and MCI have special numbers that will connect you to English-speaking operators. These centers are managed by Chilean telephone companies like Entel, CTC, et al. Unlike the US, local numbers can have different numbers of digits.
Most Chilean hotels equip their rooms with digitally, multiplexed telephones.
It controls the analog power level to prevent overloading the PC modem. The NRAO subscribes to a service provider in Chile. Call me for details. Electricity Normal power is 220vac, 50Hz. Chilean outlets use three round pins in a line, with the middle one being ground.