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Phone Line Monitor (PLM) Card

The Phone Line Monitor comes in two types and is applicable to a telephone monitoring system.

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Description

The Phone Line Monitor comes in two types, (A) line plug-in card for one site and (B) monitor plug-in card for another site for Loop-AM3440 B/C devices. The card is applicable for a telephone monitoring system. Voice coding can be selected as either A-law or mu-law. This unit can be used on systems running with 110 to 220 Vac or -48 Vdc power supply.

The AM3440 Phone Line Monitor card requires an external cable to support 4 –RJ11 ports for connecting telephone lines. LEDs provide channel setting and channel status indicators. Transmit & receive gains are programmable to 0, -3, -6, or +3 dB for PLM (A) or 0, -3, -6, or +7 dB for PLM (B).

  • Four RJ11 connectors for Phone Line Monitor card
  • Line monitoring
  • A-law or mu-law coding
  • CAS signaling convention
  • Intended for use with 110 to 220 Vac or -48 Vdc powered main units.