NEC Electra Elite IPK II System Hardware Manual

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NEC Electra Elite IPK II System Hardware Manual Manual pdf 58 page image

___________________________________________________________________________________3 - 24 System Specifications___________________________________________________________________________________Document Revision 3 Electra Elite IPK II5.2 Cabling Precautions5.2.1 Cable PlacementWhen selecting cables and Main Distribution Frame (MDF), futureexpansion or assignment changes should be considered. Avoidrunning cables in the following places: A place exposed to wind or rain. A place near heat radiating equipment or where the quality ofstation cable covering could be affected by gases andchemicals. An unstable place subject to vibration.Table 3-8 Cable Connection Between the Analog Port andthe Single Line EquipmentConnected Equipment CableMaximum Distance orImpedance BetweenEquipment and TelephoneAD(A)-R/AD(A)-2R Unit Twisted Pair 10 feetADA(2)-W Unit Twisted Pair 10 feetAP(A)-R or AP(R)-R Unit Twisted Pair 50 feetAPA-U Unit or APR-U Unit Twisted Pair 50 feetOPX(2)-U( ) ETU Twisted Pair 1,600 ohmsSLI(4)/(8)-U( ) ETU Twisted Pair 300 ohmsSLIB(4)/SLIE(4)-U10 ETU Twisted Pair 300 ohmsSLTII(1)-U10 ADP Twisted Pair 50 feet Mixing digital and analog ports through the same 25-pair cable runsis not recommended.Table 3-9 Cabling RequirementsConnected Equipment CableExternal Amplifier Hi-Fi Shielded Audio CableMusic on Hold and Background MusicSources Hi-Fi Shielded Audio CableITH Cabling Cat 5 Straight Data Network cable100 meters maximum distance