I feel that pharmacy provides the best options for me in relation to my interests in drugs, industry/research, and clinical practice. So with that, I've been thinking that perhaps it might be best to find a job as a pharmacy technician. I'm currently a patient care associate, and make $19/hr.
The Public Switched Telephone Network - The public switched telephone network (PSTN) is the international network of circuit-switched telephones. Learn more about PSTN at HowStuffWorks. x
A line card have commonly been used to interface the twisted pair cable of a POTS local loop with the public switched telephone network (PSTN). Line cards used on the PSTN may have many functions, including: 1  conversion of voice transmissions from analog to digital or vice versa. 2  detection of off-the-hook receivers.