Paradyne 1900 manual Air Baffle, Fan Tray, Filter Shelf Option

1. BitStorm 1900 IP DSLAM

The BitStorm 1900 shelf and components are installed in a standard 19” rack and can be installed in 23” racks using optional 23” mounting ears. Up to five (5) BS1900 Systems can be installed into one rack depending on the application and the associated required components. Refer to "Appendix B. Cabling Specifications‚" on page 115 for typical rack configurations.

Depending on the application/configuration, the following components are installed in the rack with the BitStorm 1900 Shelf to comprise the system:

Air Baffle

The Air Baffle, installed above the Filter Shelf (or the BitStorm 1900 Shelf), is used to deflect the exhaust air flow out the rear of the rack. When more than one BS1900 system is installed in a rack, the Air Baffle prevents the heated exhaust air of one BS1900 system from being drawn into the shelf of the BS1900 system installed above.

Fan Tray

The Fan Tray provides forced-air cooling throughout the BS1900 system. A Fan Tray is installed under each BS1900 Shelf and contains six forced-air cooling fans to ensure sufficient cooling for the entire system. The -48 V DC Fan Tray is ideal for the CO (Central Office) and the 110/220 V AC Fan Tray has been uniquely designed for enterprise applications.

Filter Shelf Option

The Filter Shelf contains low-pass filter splitters to separate out-of voiceband signals from the voiceband traffic between the BitStorm modems and the external voice facility equipment. Each Filter Shelf contains up to 10 filter cards. One filter card supports 12 EtherLoop lines installed in the BS1900 shelf. Depending on the application, more than one Filter Shelf can be installed, one on top of another.

1900-A2-GN20-00 BitStorm 1900 Installation and Maintenance Guide 1-3