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Completing Installation and Cable Pinouts
158 Installation, Upgrades and Additions for Avaya CMC1 Media Gateways
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
d
Type I Compatible, Type I
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 open
1
/battery
1. An open circuit is preferred instead of battery voltage.
ground
Type I Compatible open
1
/battery ground ground open
1
/
battery
Type V open
1
/battery ground open ground
Type V Reversed ground open ground open