About the HotWire 8800 DSLAM
1-4
8800-A2-GN21-20
October 1997
HotWire 8800 DSLAM Features
The HotWire 8800 DSLAM system has the following features:
Power Redundancy and Load Sharing
The chassis provides a power input terminal block, which is capable of
accepting two independent – 48 Vdc power inputs. Two power sources can
be connected to the chassis to provide power redundancy and load sharing.
If one power source fails, the other source provides all of the power needed
by the system. This is done automatically without system disruption.
The chassis distributes – 48 Vdc power from the CO power source to
individual cards via the interface module and the backplane.
A Convenient Front-Facing Interface Panel
The interface panel on the chassis allows all interface cables to be connected
and maintained in the front of the chassis for easy accessibility.
Major/Minor Alarm Contacts for CO Alarm Requirements
The interface panel provides two sets of dry contacts on a 6-pin jack interface
for connection to a Central Office (CO) alarm system.
LED Monitors for Power and Fan Status and Major and Minor Alarms
LEDs on the front panel of the HotWire 8800 chassis are indicators of the
status of chassis functioning. For more information on the meaning of LED
indications, see Appendix A,
LEDs
.
Hot Swappable Cards
The MCC and DSL cards can be installed and removed from the chassis
without service disruption to other cards.
Network Equipment Building Standards (NEBS)
The 8800 DSLAM meets Network Equipment Building Standards (NEBS) Level 2
Criteria. In addition, it meets NEBS Level 3 Earthquake (Zone 4 Level).
Refer to NEBS Heat Release Limits to determine the number of chassis that can
be mounted in a rack. Up to three HotWire 8800 DSLAMs may be mounted in a
7 -foot rack and comply with NEBS Floor Heating Load Limits.
