Nortel Networks DCT1900 manual Base Station Cabling, Base Station Cover and Back

Technical Product Manual - DCT1900

Installation Instructions, Base Station – KRC 101 1371

	3"
	6 5/16"
	LED1
	LED2
7 3/16"	label	}	RJ45
		RJ11
Front		Back
Back		Front

Fig. 16-1 Base Station Cover and Back

16.2Base Station Cabling

Each Base Station requires a minimum of 2 pairs of CAT3 unshielded twisted pair cable. These two pair will be SC0 (signalling channel 0) and SC1 (signalling channel 1). Besides being used for signalling there is also 48 volts provided between the two pair to power the Base Station. One pair is at a -48V potential with respect to the other pair.

How far a Base Station may be powered on the two pair is shown in a chart in Section 4, Chapter 4, Table 4-3. If the cable distance to the Base Station exceeds the value in the chart for 2 pair, then the EPP (Express Power Pair) may be used. The EPP is a third pair of wires brought out of the Radio Exchange that supplies -48V. The EPP contains two wires, EPP0 and EPP1, where EPP1 is positive with respect to EPP0.

Install-DCT1900/R8/mw	16-3
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