Edge device. An edge device is a device which provides an entry point into enterprise or service provider core networks. Examples include routers, routing switches, integrated access devices (IADs), multiplexers, and a variety of metropolitan area network (MAN) and wide area network (WAN) access devices.
1 Sinus barotrauma occurs when there is a difference in pressure between the air in the sinuses and the pressure outside. 2  You may experience pain around your cheek bones or above your eyes.  You may also experience headaches.
In sinus tachycardia, the heart beats normally, and blood flow is not changed. The electrical impulses controlling the heart beat fire correctly and automatically from the sino-atrial (SA) node, the heart's pacemaker. Symptoms can include dizziness, fatigue, shortness of breath (SOB) and sweating.