Cisco ASR 9922 20 Line Card Slot DC Chassis w/ PEM V2
The modular power architecture of Cisco ASR 9000 Series (available in both AC and DC versions) includes three power supplies: 3-kW AC, 2-kW DC, and 1.5-kW DC. For the Cisco ASR 9922, only 2-kW DC and 3-kW AC power supplies are applicable. The power supplies are housed in field-serviceable Power Entry Modules (PEMs), which come in AC and DC forms. Each PEM can hold up to four modules of its corresponding type with no power zones or placement restrictions (mixing of AC and DC supplies is not supported). Service providers can add more power as their bandwidth and feature requirements increase over time, by adding more line cards to the chassis. This capability translates to lower CapEx initially and optimal OpEx over the product life.
The Cisco ASR 9000 Series also features a fully integrated timing infrastructure, allowing the routers to take in timing inputs (for example, Synchronous Ethernet, Building Integrated Timing Supply [BITS], and Data Over Cable Service Interface Specification [DOCSIS] Timing Interface [DTI]) and distribute them over the backplane to each slot. This capability allows extensive support for transparent mobile convergence, mobile Radio Access Network (RAN) backhaul, and Time-Division Multiplexing (TDM) circuit emulation, without sacrificing performance or scale.
The optimized thermal infrastructure of the Cisco ASR 9000 Series is designed to be scalable to support future capacity requirements. Variable-speed high-efficiency fans provide reduced power requirements under normal operating environments while retaining the capability to cool current and future line cards under extreme conditions.