Detailed Product Description ZH-5000A IEEE1588 Ethernet Switch1. Description ZH-5000A Ethernet switch supports 3 models of IEEE-1588 protocol, the boundary clock, End to End (E-to-E) transparent clock and Peer to Peer (P-to-P) transparent clock. Ethernet switch can configure differently according to customer needs, meanwhile, it can set to ring typology, to remove unnecessary packet traffic, to ...