AT&T 555-230-894 manual Table H-27. Signaling Formats for TN760 Mode Type

Option Switch Settings

!CAUTION:

To prevent damage from static electricity, always wear an EMC wrist strap (comcode 900 698 226) when handling circuit packs or other switch components.

Table H-27. Signaling Formats for TN760

Mode	Type
E & M	Type I Standard (unprotected)
E & M	Type I Compatible (unprotected)
Protected	Type I Compatible, Type I Standard
Simplex	Type V
E&M	Type V
E&M	Type V Revised

Table H-28. Signaling Type Summary

Signaling	Transmit (M Lead)		Receive (E Lead)
Type	On-Hook	Off-Hook	On-Hook	Off-Hook
Type I	grd	bat	open*/bat	grd
Standard
Type I	open*/bat	grd	grd	open*/bat
Compatible
Type V	open/bat*	grd	open	grnd
Type V	grd	open	grd	open
Reversed

* An open circuit is preferred over voltage.

H-38September 1995 Issue 1