Cisco - Expansion module - 42 ports - E-1 - refurbished - for ONS 15454 SDH
The 42-Port E1 Interface card delivers greater service densities and advances overall platform economics by reducing system footprint for the ONS 15454 SDH multiservice provisioning platform (MSPP). The E1-42 module provides 42 G.703 compliant E1 interfaces in a single-slot footprint for the ONS 15454 SDH. The E1-42 card is capable of receiving 42 independent asynchronous E1 signals and mapping them into VC-12s (virtual container) per ITU G.707 for further multiplexing, switching, or transport. The E1-42 card also provides performance monitoring and alarm reporting framing formats per ITU G.826. Each E1 interface on the E1-42 card operates independently at 2.048 Mbps, with the physical termination of each E1 located at the front mount electrical connection (FMEC) module in the electrical facility connection assembly (EFCA) chassis. The E1-120NP FMEC is required when the E1-42 card is configured in unprotected mode. When the E1-42 card is configured in a 1:3 protection group, the E1-120PROA and E1-120PROB FMECs provide a 120-Ohm balanced, termination capability. For 75-Ohm terminations, an external one rack unit high converter (E1-75BB) is available which allows conversion from 120-Ohm to 75-Ohm and vice versa. The E1-42 card utilizes three card-level light indicator indicators on the card faceplate. The red FAIL light indicator indicates a hardware problem on the E1 module. The bi-color ACT/STBY light indicator indicates the modules' current operational status. When the ACT/STBY light indicator is green, it indicates that it is the working module and is in the active condition. When the ACT/STBY light indicator is amber, it indicates that it is the protection module and is operating in a stand-by condition. The yellow SF indicates a problem receiving incoming data (LOS, LOF, or high BER) on one or more of the E1 ports on the card. The user can query individual ports for further alarm resolution or port conditions via the LCD display located on the fan tray assembly or access the system via Cisco transport controller (CTC).
