Sonet Terminal Sonet Terminal Sonet Terminal COI-LAN Network Overview HS - 041004d Drawing Title: Ref Dwg Number: This document contains proprietary information and shall not be duplicated or disclosed without the written permission of Holly Street Communications, Inc. By accepting this document the recipient agrees to make every effort to prevent unauthorized use of this information. Page of 1 Holly Street Communications, Inc. 256 Rachael Place Pleasanton, California 94566 www.hollystreetcomm.net Remote Field Technician Regional Access HS-9000 HS-1016 Ethernet Switch Remote User SA-8004 Serial Access Gateway IP Network Elements Sonet Terminal T1 / Ethernet Media converter / Router Corporate LAN CO-LAN Desktop PC Ethernet Ethernet Serial Network Elements Separate LAN’s at Remote Location Typically there will be a separation between the Corporate IP network and the CO Network Element IP network. This separation protects the Corporate IP network from potential problems located on the CO-LAN side. Sonet Ring Sonet Ring Sonet Ring Sonet Ring Remote Office Remote Office Remote Office Remote Office T1 / Ethernet Media converter / Router HS-1016 Ethernet Switch Sonet Terminal Remote Field Technician