Encapsulation of E1 frames within Ethernet

Device (D) is comprises at least E1 interface circuit unit communication network device (ETPL) specialized a stop block is used to process E1 data frame. Device (D) comprises a processing device, the device suitable for: Once wherein at least a command to the methods E1 target E1 port frame, sealed to the E1 frame in Ethernet the payload data field, a conveniently is transmitted to the Ethernet port socket, wherein the Ethernet port point to provide the distributed E1 target port access.