DCN communication through sub-interface 4094 is also called telecom DCN. A sub-interface numbered 4094 is created on a DCN-enabled interface, and this sub-interface is automatically associated with VLAN 4094 (with the encapsulation mode being dot1q). NEs currently can use serial interfaces or su...
During the initial stages, telecom carriers used leased lines to provide Layer 2 connections for enterprises. However, leased lines come with the following drawbacks: Long construction time High prices Difficult management After the emergence of asynchronous transfer mode (ATM) and frame relay (FR) ...
In the following decades, the reed switch has been widely used in the industry and has gradually become a cost-effective magnetic position switch sensor. The Hall switch sensor is a high-sensitivity, high-frequency response, ultra-low power consumption and high-precision magnetic induction switch....