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Files used for illustration to support the Telephony 101 discussions held on the TCI Listserv beginning in November 2012.  See the first document in the list below for the event announcement. The last document is an errata sheet developed during the event that should be added to your copy of the book

Discussion was based on the book "Old Time Telephones!"  by Ralph Meyer.  Info about and sources of the book are available here:

Using these documents, you can work through the book and discussions at your own pace.

Telephony 101

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