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[1] Does the constant voltage system have you confused?

[2] 600 OHM 1:1 Transformers ?

[3] Paging interface for two-line phones?

[4] Message on hold

[5] TV optical audio output standards?

[6] Dukane 1A728 - now CareHawk - to ATA

[7] Valcom 2300a

[8] ring over page on valcom horn/ Partner ACS

[9] Valcom and Ducane Paging (Help Hal!!)

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