Nextel Communication System   Standard Features Standard features included with all Nextel Phones are as follows: *Walkie-Talkie Service *Phone service *GPS  service Walkie-Talkie Services Walkie-Talkie service that instantly connects you to all other Nextel users - across town, across the country, Phone Service Nextel communicators are equipped with regular phone service to give our Security personnel direct access to our clients in case of an emergency.  GPS Solutions GPS location-based safety services like Mobile LocatorTM, allows us to keep track of  our Security personal in the field.