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10 status repeater channel, 11 monitor repeater channel, 12 telephone interconnect and data transmission – EFJohnson 3000 SERIES User Manual

Page 14: 13 public switched telephone network (pstn), 14 private automatic branch exchange (pabx)

10 status repeater channel, 11 monitor repeater channel, 12 telephone interconnect and data transmission | 13 public switched telephone network (pstn), 14 private automatic branch exchange (pabx) | EFJohnson 3000 SERIES User Manual | Page 14 / 214 10 status repeater channel, 11 monitor repeater channel, 12 telephone interconnect and data transmission | 13 public switched telephone network (pstn), 14 private automatic branch exchange (pabx) | EFJohnson 3000 SERIES User Manual | Page 14 / 214