Shanghai New Rock Technologies Inc. Page12/75RJ11 Interface ConfigurationOM10Models 1 2 3 4 5 6 7 8OM10-4FXO TrunkLine 1TrunkLine 2TrunkLine 3TrunkLine 4 NA NA NA NAOM10-8FXO TrunkLine 1TrunkLine 2TrunkLine 3TrunkLine 4TrunkLine 5TrunkLine 6TrunkLine 7TrunkLine 8OM10-4S/4 Line 1 Line 2 Line 3 Line 4 TrunkLine 1TrunkLine 2TrunkLine 3TrunkLine 41.3.2 OM20Designed with a 1U high and 19–inch wide compact chassis, OM20 is suitable for installation in astandard cabinet. It has a built-in 110-220V power module. OM20 uses RJ45 for the interface socketof analog lines and trunks. OM20 supports the following types of configuration:Table 1-6 OM20 ConfigurationModels Local extension Analog trunk SIP extensions SIP trunksOM20-16S 16 0 60 20OM20-24S 24 0 60 20OM20-16FXO 0 16 60 20OM20-8S/8 8 8 60 20OM20-12S/4 12 4 60 20OM20-16S/8 16 8 60 20OM20-20S/4 20 4 60 20Figure 1-3 OM20 Front PanelTable 1-7 Description of OM20 Front Panel# Description① Offer the first 8 analog line interfaces (FXS or FXO),interface type is RJ45.② Offer 9 th-16th analog line interfaces (FXS or FXO), interface type is RJ45.③ Offer 17 th-24th analog line interfaces (FXS or FXO), interface type is RJ45.When the total system capacity of OM20 is 16 lines, these interfaces will notbe provided.④ One 10/100 Ethernet uplink interface (WAN) and one 10/100 Ethernet userinterface (LAN), interface type is RJ45. The uplink interface is used for callsand management. The user interface is reserved for future use.