Voice Alarm Modules
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AFP-300/AFP-400 Installation PN 50253:C1 05/22/97 4-17
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Follow these guidelines when connecting VCM-4 telephone circuits:
• Telephone circuits are supervised and power-limited.
• Use twisted-pair cable for telephone circuit wiring.
• Maximum telephone circuit wire resistance is 40 ohms.
• Install End-of-Line Resistors according to Table 4-12:
Table 4-12 VCM-4 Telephone Resistor Requirements
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Figure 4-17 shows typical telephone wiring for a VCM-4 module:
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For ELR connection to devices... Use resistor part number...
with terminals 71252
with flying leads 71245
used in Canada also include N-ELR Resistor Plate
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