DEFINITY Enterprise Communications Server Release 6

Issue 5

Installation and Test for Multi-Carrier Cabinets 555-230-112

May 1998

B Option Switch Settings

 

TN760D Tie Trunk Option Settings

Page B-10

 

 

TN760D Tie Trunk Option Settings

The TN760D Tie Trunk circuit pack interfaces between four 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 B-5 and Table B-6), set the switches on the TN760D and administer the port using Figure B-2 and Table B-7.

Table B-5. 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 B-6. 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.

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Lucent Technologies Release 6 manual TN760D Tie Trunk Option Settings, Table B-5. Signaling Formats for TN760D Mode Type