3Com 3C13701 Installation Manual page 40

40 C 4: I
HAPTER NSTALLATION OF THE
R
OUTER
If you choose two RJ45 connectors (for extending E1 interface cables), connect the RJ
connector of the 120Ω balanced twisted pair cable to a network connector assembly,
which is connected to a 120Ω E1 trunk cable. The 120Ω E1 trunk cable is then
connected to the peer device.
Figure 33 Extending E1 120Ω balanced twisted pair cable
4 Observe the status of the Link LED for the E1 interface. ON means that a link is present.
OFF means that no link is present and you need to check the line.
Connecting T1 Interface to DSU/CSU
Introduction to the T1 Interface
interface, is responsible for forwarding and processing T1 data flow, delivering CT1
access and implementing ISDN PRI function. Its attributes are listed in the following table:
Table 19 T1interface attributes
Attribute
Connector type
Interface standard
Maximum baud rate
Matching cable
Operating mode
Function
For the T1 module, corresponding serial interface shall be created after you use the
timeslot bundling command on the Controller T1 interface.
T1 Interface Cable
following figure:
Figure 34 Unterface cable
T1 interface, which stands for channelized CT1/PRI
Description
RJ45
G.703/T1 102, G.704
1.544 Mbps
T1 cable (100Ω standard shielded cable)
T1, CT1, ISDN PRI
Backup
Terminal access
ISDN
T1 interface matches 100Ω standard shielded cable. See the