ISC (International Service Center) has only one function, to send mail on its way to the next location. Since some sorting operations take place only once a day, no package should be there for 24 hours. What confuses people is that after it is done there, it will be in transport, where tracking is not able to be done. Parcel tracking is done on machines at postal facilities.
Not to be confused with Psychologist. A psychiatrist is a physician who specializes in psychiatry, the branch of medicine devoted to the diagnosis, prevention, study, and treatment of mental disorders.
A psychiatrist is a physician who specializes in mental health care.In order to become a psychiatrist, you must complete all of the requirements to become a medical doctor from an accredited school of medicine.