Sometimes known as telephony metadata, this information is comprised of the time, duration and number dialed of a phone number.
It's telephony's biggest "killer app" since Skype or even voice-over-IP.
These condenser methods of telephony have not become commercial.
Such condemnation is detrimental to the progress of telephony.
At thirty years of age he became a central figure in the development of the art of telephony.
No other man has touched the apparatus of telephony at so many points.
It is largely used in telegraphy, and often in telephony in such cases as require a constantly flowing current of small quantity.
Since then, this railroad has become the chief beneficiary of the art of telephony.
These cuts may be seen in various books on the subject of telephony.
telephony, it is clear, both from one's own experience and from reading the letters in the papers, is not yet an exact science.