DRTV generally bypasses traditional retail stores to make a product sale directly with the consumer, but can also be used to drive product sales at retail. DRTV is comprised of three primary marketing subgroups of short form, long form and live home shopping.
Persia/Persian is more or less synonymous with Iran/Iranian. Persia is just the older name whereas Iran is the country's modern name. I think people from Iran call themselves Persian because of Iran's negative image in the west since the 1979 revolution.
Most of the Jews in Iran had no permanent surnames before Reza Shah. After surnames became mandatory many Persian Jews employed job related names as their surnames. Many Jews worked in non-Muslim professions like goldsmith, silversmith, dealers of coins, money changing and seller of spirits.