Specifications

1-6 Reference Guide
Model No.
Running Head
Chassis Types System Overview
Table 1-3. Two-Sided Chassis Card Slots
1.2.4
Front-Loading Chassis with Enhanced Power Supply
Figure 1-5 shows the front-loading chassis with enhanced power supplies on top. This is a tall
chassis in which the two power supply slots are in the upper right. This chassis is made of steel
and has improved “v” design card guides that protect the electrical card traces from contact
with the chassis.
This chassis has three server card slots (P1 to P3), four WAN card slots (W1 to W4), and eight
user card slots (U1 to U8). Slots F1 and F2 accommodate up to two power supplies, and slots
R1 and R2 hold up to a maximum of two ring generators. The chassis also includes two low
power AC-to-DC converters (NS1, NS2) and a maximum of two high power AC-to-DC
converters (HP1, HP2).
Table 1-4 shows the card slots for the front-loading chassis with the power supplies on top.
Use that table to determine your chassis card configuration.
Type of Card # of Cards Slots Used Notes
CPU 1 or 2 C1, C2 One required in either slot
Server 1 to 3 P1, P2, P3 ADPCM
WAN 1 to 4 W1-W4 One required
Interface 1 IF Required
Alarm 0 to 8 U1-U8 Internal/External, any user slot
E&M Voice 0 to 8 U1-U8 2/4-wire voice, any user slot
FXS Voice 0 to 8 U1-U8 2-wire voice, any user slot
FXO Voice 0 to 8 U1-U8 2-wire voice, any user slot
FXS-C Voice 0 to 8 U1-U8 2-wire voice, coin, any user slot
FXO-C Voice 0 to 8 U1-U8 2-wire voice, coin, any user slot
B7R Data 0 to 8 U1-U8 FDL Mux, any user slot
BRI Data 0 to 8 U1-U8 BRI, any user slot
DS0-DP Data 0 to 8 U1-U8 4-wire data, any user slot
FRAD Data 0 to 8 U1-U8 FRAD, any user slot
HSU Data 0 to 8 U1-U8 High-speed data, any user slot
OCU-DP Data 0 to 8 U1-U8 4-wire data, any user slot
SRU Data 0 to 8 U1-U8 Sub-rate data, any user slot
Main Power (AC/DC) 1 or 2 F1, F2 AC or DC power supplies
Optional Power 0 to 2 R1-R5 AC-to-DC converter
Optional Ringer 0 to 5 R1-R5 Ringing generator