Cisco Systems AS5850 manual Function Definition, Port Description

Chapter 1 Cisco AS5850 Product Overview

Field-Replaceable Units

Table 1-6 RSC Push Button Options

Function	Definition
ACO YES/NO	ALARM CUTOFF—When selected (YES), software should turn off any active
	external alarm relay control bits. If any subsequent (new) alarm condition
	occurs, ACO status should revert to NO.
ALARM:	When selected, turns off the HIST LED (if it is on), but only if there is no
HIST CLEAR	current Major or Minor alarm condition.
RSC STOP/START	Select this before removing the RSC card.

Figure 1-7shows the RSC front panel ports, and Table 1-7describes the port functions.

Warning To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits to telephone-network voltage (TNV) circuits. LAN ports contain SELV circuits and WAN ports contain TNV circuits. Some LAN and WAN ports both use RJ-45 connectors. Use caution when connecting cables. To see translations of the warnings that appear in this publication, refer to the Regulatory Compliance and Safety Information document that accompanied this device.

Note Connect the alarm port only to a safety extra-low voltage (SELV) source using 22 AWG, or thicker, copper wire. SELV ratings are maximum 30 Volts AC (RMS), maximum 60 Volts DC, and maximum

50 VA power. The alarm port is rated for 2.0 Amp maximum current.

Table 1-7 RSC Front Panel Ports

Port	Description
CONSOLE	Provides primary RJ-45 connection to system
	management.
AUX	Provides secondary RJ-45 connection to system
	management.
10/100BT	Provides Fast Ethernet connection to backbone
	network.
NETWORK CLOCK	Provides BNC connection for a BITS clock.
ALARM	Provides a three-point terminal block
	connection to an external audible or visual alarm
	source.

Common Logic Interface

Each RSC card contains a block of logic referred to as the common logic and system clocks. This block generates the backplane Stratum compliant 4-MHz and 8-kHz clocks used for interface timing and for the TDM bus data movement. The common logic can use a variety of sources to generate this system timing, including a T1 or E1 signal input from the BNC connector on the RSC front panel.

	Cisco AS5850 Universal Gateway Hardware Installation Guide
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