Nortel Networks BCM50 manual Port/connector Description

Chapter 2 Introducing the BCM50 hardware 37

Table 1 Main unit ports/connectors and descriptions

Port/connector	Description
Power connector	A barrel connector jack used to connect the power supply to the main unit.
Retention clip mounting hole	A small hole into which you insert the retention clip. The retention clip secures the
	power connector to the unit.
OAM port (port 0)	An RJ-45 jack used to connect a computer running administration software, such as
	Element Manager, to the main unit.
LAN port (port 1)	An RJ-45 jack used to connect the customer LAN to the main unit.
Expansion/LAN ports (ports 2	Two RJ-45 jacks used to connect the expansion units to the main unit. The expansion
and 3)	ports can also provide connections to the Ethernet switch internal to the main unit. If
	the BCM50 system does not have expansion units connected to these ports, you can
	use them to connect additional devices to the LAN.
	Note: Keycodes are required for the expansion ports to function. If you purchase a
	keycode for one expansion port only, the expansion port on the left (port 2) is active.
WAN port	For BCM50a: An RJ-11 jack used to connect the BCM50a main unit to the ADSL line
(BCM50a and BCM50e only).	provided by your Internet service provider (ISP).
	For BCM50e: An RJ-45 jack you use to connect the BCM50e to the Ethernet port of a
	WAN edge device (for example, an external ADSL modem or cable modem).
	Note: This port is not available on the BCM50 main unit.
Additional LAN ports	Three RJ-45 jacks that provide connections to the Ethernet switch in the BCM50a and
(BCM50a and BCM50e only).	BCM50e main units. You can use these ports to connect additional devices to the
	LAN.
	Note: These ports are not available on the BCM50 main unit.
reset switch	A button to activate the reset feature. Use a long thin tool to press the button.
	Warning: The reset feature erases programming information and must be used with
	care.
Music source port	A phono jack used to connect a music source to the main unit. If you use this port, the
	music source connections on the RJ-21 telephony connector are disabled.
USB port	A USB 1.1-compatible port used to connect a USB storage device or the data
	interface for an uninterruptable power supply (UPS) to the main unit. The data
	interface for the UPS allows the main unit to monitor and control the UPS functions.
	To connect both a USB storage device and UPS data interface, an industry-standard
	USB hub (USB 1.1-compatible) is required.
	Note: The USB storage device must be formatted for the FAT32 file system. If
	necessary, reformat the USB storage device by plugging it into your computer’s USB
	port, right-clicking the USB device icon, and selecting FAT32 reformatting. This
	destroys any data you had on the USB.
RJ-21 telephony connector	An RJ-21 port used to connect telephony devices to the main unit.

Warning: External equipment connected to the auxiliary ringer, page relay, page output, and music-on-hold interfaces must use safety extra low voltage (SELV). All four interfaces are SELV, and the external equipment connected to these interfaces must be SELV. If these interfaces are not SELV, you must use external line isolation units (LIU).

BCM50 Installation and Maintenance Guide