Adtran L128T Manual Do Utilizador
61202.070L1-1
Express L128/L128T User Manual
21
Chapter 2
Installation
After unpacking the unit, immediately inspect it for possible shipping dam-
age. If damage is discovered, file a claim immediately with the shipping car-
rier; then contact the ADTRAN Repair and Return department.
age. If damage is discovered, file a claim immediately with the shipping car-
rier; then contact the ADTRAN Repair and Return department.
ISDN NETWORK CONNECTION
The Express L128/L128T supports either dial or leased operation. A single RJ-
45 modular jack labeled ISDN on the rear panel provides connection to either
network service.
45 modular jack labeled ISDN on the rear panel provides connection to either
network service.
Dial operation allows the user to dial out or receive calls over the public net-
work.
work.
The leased operation mode supports dedicated 2B1Q data service at rates up
to 144 kbps by using a nailed up circuit, or a permanent connection between
endpoints.
to 144 kbps by using a nailed up circuit, or a permanent connection between
endpoints.
See Appendix D on page 143 for ISDN network connector pin assignments.
LOCAL AREA NETWORK CONNECTION
The Express L128/L128T has a 10BaseT connector that provides half-duplex
10 Mbps operation over a 4-wire twisted pair. Place the switch in the TO HUB
position when connecting to a 10BaseT concentrator or Hub. Place the switch
in the TO NIC position when connecting directly to a computer’s 10BaseT net-
work interface card.
10 Mbps operation over a 4-wire twisted pair. Place the switch in the TO HUB
position when connecting to a 10BaseT concentrator or Hub. Place the switch
in the TO NIC position when connecting directly to a computer’s 10BaseT net-
work interface card.
Other types of Ethernet interfaces (i.e., AUI, 10Base2, etc.) can be accommodat-
ed by obtaining an appropriate converter.
ed by obtaining an appropriate converter.