Avaya CMC1 manual TN760E Tie Trunk Option Settings, Signaling Formats for TN760E Mode Type

Completing Installation and Cable Pinouts

TN760E Tie Trunk Option Settings

The TN760E Tie Trunk circuit pack interfaces between 4 tie trunks and the TDM bus. Two tip and ring pairs form a 4-wire analog transmission line. An E and M pair are DC signaling leads used for call setup. The E-lead receives signals from the tie trunk and the M-lead transmits signals to the tie trunk.

To choose the preferred signaling format (Table 31 and Table 32), set the switches on the TN760E and administer the port using Figure 69: TN760E Tie Trunk Circuit Pack (Component Side) on page 159 and Table 33: TN760E Option Switch Settings and Administration on page 159.

Table 31: Signaling Formats for TN760E

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

Table 32: Signaling Type Summary

Signaling Type	Transmit (M-Lead)		Receive (E-Lead)
	On-Hook	Off-Hook	On-Hook	Off-Hook
Type I Standard	ground	battery	open1/battery	ground
Type I Compatible	open1/battery	ground	ground	open1/
				battery
Type V	open1/battery	ground	open	ground
Type V Reversed	ground	open	ground	open

1. An open circuit is preferred instead of battery voltage.

158 Installation, Upgrades and Additions for Avaya CMC1 Media Gateways