Hurricane Watch: An announcement that sustained winds of 64 knots (74 mph or 119 km/hr) or higher are possible within the specified area in association with a tropical, subtropical, or post-tropical cyclone.
PSTN Definition The public switched telephone network (PSTN) is the worldwide collection of interconnected public telephone networks that was designed primarily for voice traffic. The PSTN is a circuit-switched network. That is, a dedicated circuit (also referred to as a channel) is established for the duration of a transmission, such as a telephone call.
What Does ATTN Mean? ATTN means Attention. ATTN is typically used at the start of a message to ensure that the recipient pays attention. In other words, it is used to highlight that the message that follows is important. ATTN is often written in uppercase and followed an exclamation mark.