pdf C38.229 I3 Sep62 - Subscriber Sets Ringer Relay Types Polarized Ringing 531C 534DT 687B CB LB Conn Ocr R Popular

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C38.229 I3 Sep62 - Subscriber Sets Ringer Relay Types Polarized Ringing 531C 534DT 687B CB LB Conn Ocr R

Contributed by Steve Cichorsky.  OCR by Clint Gilliland

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