| 释义 |
Q 1. One of the two letters, along with Z, that traditionally did not appear on a telephone dial or keypad. The thought was that Q could be confused with O, and that Z could be confused with 2. Q now appears with P, R, and S on number 7. Alphanumeric dialing was, and remains, a North American practice. Telephones in most other countries do not sport letters. 2. Q interface or Reference Point Q in ISDN. See Reference Point Q. |