pdf ATT 5XB vI Mar55 Wire Spring Sec6 - Outgoing Calls Using Senders Popular
By Paul F 205 downloads
ATT_No_5_Crossbar_Switching_System_vI_Sec6_Mar55_Wire_Spring_Relay_Circuit_Subscriber_Outgoing_Calls_Using_Senders_tci_ocr.pdf
From: No. 5 Crossbar Switching System - Wire Spring Relay Circuit
Volume 1 - Wire Spring No. 5 Crossbar System
Section 6 - Outgoing Calls Using Senders
Scanned and Contributed by Steve Cichorsky
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