A PSTN-Oriented Telemedical System的用法和样例：
- The process of setting up a data transfer on a PSTN line.
- Telemedical systems can be generalized into two modes according to the demanding of the system and technology type: RT(real-time) and non-RT.
- If PSTN to PSTN is cheaper, it is more financially logical for your to offer a PSTN Gateway solution.
- I suppose you also have a caste system in your society.
- They called for a radical reform of our tax system.