Справочник Пользователя для 3com SuperStack II
174
A
PPENDIX
D: C
ONNECTORS
AND
C
ABLES
RJ-48 T1 Cable
To connect a model 46x or model 56x bridge/router to a T1 or fractional
T1 line, use a cable with an RJ-48 connector. 3Com does not supply this
cable.
T1 line, use a cable with an RJ-48 connector. 3Com does not supply this
cable.
Figure 27 shows the pin assignments of the cable with both ends
terminated in RJ-48 connectors.
terminated in RJ-48 connectors.
Figure 28 RJ-48 T1 Cable
Serial Connectors
and Flex-WAN
Cables
and Flex-WAN
Cables
The serial connectors on the bridge/router can be connected to DTE and
DCE devices with the following interfaces:
DCE devices with the following interfaces:
■
RS-232
■
V.35
■
X.21
■
RS-449
■
RS-530 (DCE only)
RJ-48S male (shielded)
To WAN port
To wall outlet
1 2 3 4 5
7 8
6
RJ-48S male (shielded)
1 2 3 4 5
7 8
6
Name Abbr. Pin
Pin Abbr. Name
1
2
3
4
5
6
7
8
7
8
1
2
3
4
5
6
7
8
7
8
R1
T1
NC
R
T
NC
NC
NC
NC
NC
R1
T1
NC
R
T
NC
NC
NC
NC
NC
Receive ring from network
Receive tip from network
Not connected
Transmit ring to network
Transmit tip to network
Not connected
Not connected
Not connected
Not connected
Not connected
Receive ring from network
Receive tip from network
Not connected
Transmit ring to network
Transmit tip to network
Not connected
Not connected
Not connected
Not connected
Not connected