Lucent Technologies Release 6 ユーザーズマニュアル

DEFINITY Enterprise Communications Server Release 6
Installation and Test for Multi-Carrier Cabinets

555-230-112

Issue 5

May 1998

Option Switch Settings

Page B-12

TN464E/F Option Settings

TN464E/F Option Settings

The TN464E/F DS1/E1 Interface - T1/E1 circuit pack interfaces between a 24 or
32 channel Central Office/ISDN or tie trunk and the TDM bus.

Set the switches on the circuit pack to select bit rate and impedance match. See

Table B-8

and

Figure B-3

Figure B-3.

TN464E/F Option Settings

Table B-8.

Option Switch Settings on TN464E/F

120 Ohms

Twisted pair

75 Ohms

Coaxial requiring 888A adapter

32 Channel

2.048 megabits per second

24 Channel

1.544 megabits per second

Figure Notes

1. Backplane Connectors

2. 24/32 Channel Selector

3. 75/120 Ohm Selector

4. Faceplate

5. 32 Channel

6. 120 Ohm (shown selected)

7. 24 Channel (shown selected)

8. 75 Ohm

9. Connector

10. TN464E/F DS1/E1 Interface Circuit Pack