Lucent Technologies 555-230-128 User Manual
DEFINITY Enterprise Communications Server Release 6
Installation and Test for Compact Modular Cabinets
Installation and Test for Compact Modular Cabinets
555-230-128
Issue 3
May 1998
Installation Completion and Cable Pinouts
Page 2-5
TN760D Tie Trunk Option Settings
2
TN760D Tie Trunk Option Settings
The TN760D 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.
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 2-2
and
Table 2-3
), set the
1.
An open circuit is preferred instead of battery voltage.
Table 2-2.
Signaling Formats for TN760D
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 2-3.
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
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