14
Chapter 2 System overview
NN40020-308
Figure 1
Standard main unit (BCM50e shown) ports and connectors
BRI main units
The table
on page 14 describes the standard main units, and the figure
BRI main unit (BCM50be shown) ports and connectors
on page 14 shows a BRI main unit. The
other BRI main units have similar ports and connectors.
Figure 2
BRI main unit (BCM50be shown) ports and connectors
Table 7
BRI main units descriptions
BRI main units
Description
BCM50b main unit (with
Telephony only)
The BCM50b main unit provides similar functionality to the BCM50 main unit. The
difference is that the BCM50b main unit has two integrated BRI ports that replace the
four analog lines on the RJ-21 telephony connector.
BCM50ba main unit (with
ADSL router)
The BCM50ba main unit provides similar functionality to the BCM50a main unit. The
difference is that the BCM50ba main unit has two integrated BRI ports that replace
the four analog lines on the RJ-21 telephony connector.
BCM50be main unit (with
Ethernet router)
The BCM50be main unit provides similar functionality to the BCM50e main unit. The
difference is that the BCM50be main unit has two integrated BRI ports that replace
the four analog lines on the RJ-21 telephony connector.
USB
LAN
(port 1)
Expansion/LAN
(port 2, port 3)
WAN
Additional LAN
OAM
(port 0)
RJ-21 telephony
connector
Power
Retention-clip
mounting hole
Music
source
Reset
switch
USB
LAN
(port 1)
Expansion/LAN
(port 2, port 3)
WAN
Additional LAN
OAM
(port 0)
RJ-21 telephony
connector
Power
Retention-clip
mounting hole
Music
source
Reset
switch
BRI ports
The 4 lines
on the RJ-21
telephony
connector are
not available
with the BRI
ports.
