Cisco Systems Cisco 12008 manual Connecting an External Alarm Monitoring Facility

Connecting an External Alarm Monitoring Facility

Table 3-8	Specifications and Connection Limits for 100-Mbps Transmission
Parameter		RJ-45
Cable specification		Category 51 UTP, 22 to 24 AWG2
Cable length (max)		—
Segment length (max)		328 feet (100 m) for 100BASE-TX
Network length (max)		656 feet (200 m)3 (with 1 repeater)

1.EIA/TIA-568 or EIA-TIA-568 TSB-36 compliant. Not supplied by Cisco.

2.AWG = American Wire Gauge. This gauge is specified by the EIA/TIA-568 standard.

3.This length is specifically between any two stations on a repeated segment.

Table 3-9 lists IEEE 802.3u physical characteristics for 100BASE-TX.

Table 3-9	IEEE 802.3u Physical Characteristics
Parameter		100BASE-TX
Data rate (Mbps)		100
Signaling method		Baseband
Maximum segment length		100 m between DTE1
		and repeaters
Media		Category 5 UTP (for RJ-
		45)
Topology		Star/Hub

1. DTE = data terminal equipment.

Connecting an External Alarm Monitoring Facility

The clock and scheduler card (CSC) incorporates a 25-pin D-sub connector on the card faceplate (see Figure 3-16) that enables you to attach a site-wide external alarm monitoring facility to the Cisco 12008. This facility is described in Chapter 1 in the section entitled “Housekeeping and Alarm Monitoring Functions of the CSC.”

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