224 pages of practices beginning with MITL9103-098-000-NA Issue 1, May 1982 - Documentation Index.  Text searchable.  Contributed by John Novack.

Contributed by Steve Flocke and John Novack.

Contributed by Steve Flocke and John Novack.

This is the earlier version of the SX-20 using Generic 400. Later they offered a real Mitel Black console with Generic 500, rather than the 1A2 key set. Contributed by Steve Flocke and John Novack.

59 pages. Published and distributed by GTE California (GTC) to all Local Exchange Carrier (LEC) and lnterexchange Carrier (IXC) companies operating in the state of California, as well as GTE California Incorporated work groups. This directory lists test numbers for accessing test lines in GTC access tandems, sector tandems and end offices. Test lines are used for the purpose of operational and transmission testing of trunk circuits terminating in GTC offices. Contributed to the TCI Library by Steve Cichorsky. OCR & Admin: Paul Fassbender.

Includes E-100-B and E-100-C KEY telephone Sets. Contributed by John Novack.

67 pages. Contributed by John Novack.

Contributed by Steve Cichorsky. OCR by Clint Gilliland.

Telecom Australia. Issue 1, 1969.   The BPO called the SE50 switch (developed by GEC UK in the early 1950's) the 4000 Type switch. Both 2000 and SE50 types were used in Australia and the Telecom Research Labs in Victoria Australia carried out extensive work on improving SE50 performance to suit Australia's relatively unique network.  Contributed by Ross Herbert.  OCR by Clint Gilliland.

Contributed by Steve Cichorsky.