plain old telephone system造句

It's the moneysaving potential that's likely to draw your attention to Skype, the Internet phone software whose creators are bent on displacing the POTS, or plain old telephone system.
With the lack of reliable POTS ( Plain Old Telephone System ) networks in the most rural areas of Zimbabwe, some farmers used cellular networks almost exclusively, albeit with an incredibly high cost.
Even though the Aplio device is an advance over the cranky and hard-to-configure, PC-to-PC variety of telephony, it still falls far short of the plain old telephone system.
The resulting digital stream of 1s and 0s is subdivided into labeled POTS, or the Plain Old Telephone System, in some low-speed applications, such as videotelephony, because they convert the digital pulses to / from analog waves in the audio spectrum range.
Computers, which don't have ears, are the new butlers, and in place of ormolu and marble, there are ISDN phone lines, which whisk their way to the Internet at nearly five times the speed of plain old telephone systems ( POTS ).
It's difficult to find plain old telephone system in a sentence. 用plain old telephone system造句挺难的

I mean, doesn't the cell phone itself interface with plain old telephone system, and as fax is also a technology that rides on the back of the POTS, shouldn't the cell phone be able to directly send / receive faxes by itself without resorting to the use of the Internet ? ??