Optimux-45 and Optimux-45L Transport Multiple E1/T1 and Combinations of E1 and T1 over Standard T3 Electrical or Fiber Links

The Optimux-DS3 and Optimux-45L DS3 from RAD Data Communications are manageable fiber multiplexers that provide a highly cost-effective and simple solution for transporting multiple E1 and T1 links, as well as a combination of E1 and T1 (according to ITU G.747), over a standard T3 electrical signal or fiber link.

The Optimux-45 has internal cross connect capabilities that enable it to support a wide range of applications. They support chain as well as ring configurations, facilitating several E1 or T1 services at each node. When deployed in a ring application, the Optimux-45 provides a complete path protection mechanism that prevents any service failure, even if a fiber link is damaged or disconnected. In order to improve the price/performance ratio of the product, partial assemblies with four, eight or 12 ports are available, thus reducing the price significantly in nodes where only a small number of E1/T1 lines are needed.

The Optimux-45 supports both balanced and unbalanced interfaces. The balanced version has RJ-45 connectors and supports up to 28 T1 channels (balanced 100 Ω), up to 21 E1 channels (balanced 120 Ω) or mixed E1 and T1 channels. The unbalanced version has up to 21 mini-BNC connectors and supports up to 21 E1 channels (unbalanced 75 Ω). This provides an easily configurable solution, flexible enough to meet the specific requirements of a broad range of applications.

The Optimux-45L is a low cost version of the Optimux-45 with Telco (Champ) connectors as the user interface. The Optimux-45L is optimized for point-to-point or point-to network applications only. This unit provides low cost connectivity of 21 E1 or 28 T1 lines or any combination of E1 and T1.

Both versions are non-modular and offer redundant power supply, enhancing system reliability. In addition, an optional secondary link provides backup using automatic switchover upon main link failure. The products’ main link supports both electrical and optical interface options. The electrical interface has BNC connectors in conformance with G.703 standards. The optical interface supports 850 nm for multimode fiber, 1310 nm for multimode fiber, 1310 nm and 1550 nm laser for extended range over single mode fiber, 1310 nm and 1550 nm long haul single fiber option (WDM), and a single fiber/wavelength option.

To facilitate system diagnostics, the Optimux-45 and Optimux-45L feature LED status indicators as well as AIS alarm generation, recognition and dry contact closure upon link failure. In addition, setup, control and diagnostics can be performed through a supervisory port using an ASCII terminal, Telnet host, Web terminal, or from an SNMP management station via a dedicated management port (Ethernet or RS-232). The SNMP management application offers RADview-PC/TDM running in a Windows environment and RADview-HPOV/TDM for HP OpenView UNIX platforms The T3 link via an optional clock interface can be locked onto an external station clock.

The products support various performance statistics on the T3, T1 and E1 lines. The Optimux-45 DS3 fiber mux and Optimux-45L DS3 fiber mux are available as compact 1U high units for mounting in a 19" rack.