Specifications

1-4 Reference Guide
Model No.
Running Head
Chassis Types System Overview
Table 1-2. Card Slots for Front-Loading Chassis with Power Supplies on Top
1.2.3 Two-Sided Chassis
Figure 1-3 shows the front of a two-sided chassis. This chassis accepts cards from both the
front and rear. It is made of steel and has punched-steel card guides.
The front of the two-sided chassis is the network side; it holds the CPU card, up to three server
cards (slots P1 to P3), and up to four WAN cards (slots W1 to W4). The power supplies occupy
slots F1 and F2.
Type of Card # of Cards Slots Used Notes
CPU 1 to 2 C1, C2 One required in either slot
Server 1 to 3 P1, P2, P3 ADPCM
WAN 1 to 4 W1 to 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/DC converter
Optional Ringer 0 to 5 R1-R5 Ringing generator