Bell System Practices TOUCH-A-MATIC 2872A1M Identification, Installation, Connections, Operation, And Maintenance page 14

SECTION 503-603-101
D-180494 (2/4-wire relay kit) with 508-type plugs for terminating on the bac_
of the 635-type key module at the telephone set
D-180818 (record disable and dial intermix end. The conductors terminated in the 508-type!
feature switch) plugs provide the major line service requirements.i
Spade-tipped conductors are provided for auxiliary'
(c) Bottom of telephone set (Fig. 7). control functions or options and are terminated
directly on associated equipment, terminal boards,
• Battery. or stored.
B. Mounting Cord Note: Sets manufactured prior to fourth
quarter 1976 were equipped with D50AM-87
3.15 The D50BB-87 mounting cord is amphenol mounting cords. The major difference in the
ended at the equipment end and equipped cords is that TIP and RING contact strips
Fig. 6--$2872A1M (MD) or 2872A2M Telephone Set, Connection of D-180818 Kit of Parts, Record Disable
Feature Only_l
Page 14