Specifications

Reference Guide 4-33
CPU Card CPU-3 BCON (880020 / 880021 / 880022 / 880060)
4.6 CPU-3 BCON (880020 / 880021 / 880022 / 880060)
The CPU-3 BCON is the base model CPU Card. It supports up to two T1 or E1 WAN ports
(on one WAN Card). The CPU- BCON requires that you install the WAN card in slot W1 and
that all channels be assigned to time slots on links w1-1 and w1-2. A system that uses an
CPU-3 BCON card is said to operate in “standard bus-connect” mode.
The CPU-BCON does
not support redundant operations.
4.7 CPU-3 RCON (880420 / 880421 / 880422 / 880460)
The CPU-3 RCON card supports two T1 or E1 WAN links in slot w1-1 and w1-2 with a
redundant card (similarly configured) in slot w2. It supports another two T1 or E1 WAN link
in slot w3-1 and w3-2 with a redundant card (similarly configured) in slot w4. If the T1/E1
link in w1-1 fails for any reason, the system will automatically switch to the similarly
configured card in slot w2-1 (w1-2 would switch to w2-2 in the same way).
Slot w3 can support either a Single or a Dual T1/E1 WAN card. If the T1/E1 link in w3-1 fails
for any reason, the system will automatically switch to the similary configured card in slot
w4-1 (w3-2 would switch to w4-2 in the same way).
Note:
WAN ports in slot W3 can operate only in “terminate” mode and can only support
8202, 8213 or 8215 HSU card ports and OCU-DP ports from an 8247 5 or 10-port
OCU-DP card. No other voice or data ports can be assigned to the WAN card in slot
w3 in this mode.
A system that uses an CPU-3 RCON card is said to operate in “enhanced bus-connect” mode.
Two Models (CPU-3 RCON) can be installed in slots C1 and C2 to achieve CPU redundancy.
The 8804 also supports 1x1 WAN redundancy. See the System Operations section of this
manual for Redundant Operations.