H3C MSR Router Comware 5 Series Manual page 197

Figure 190 Connecting a TE device to a BSV interface module
BSV
Connecting a FIC-4BSE interface module cable
Choose the cable connection type according to the service provider line type:
•
If the service provider provides an ISDN U interface cable, you must use an NT1 device for
adaptation. Connect one end of the standard ISDN S/T interface cable to the RJ-45 interface of
the BSE interface module. Connect the other end of the standard ISDN S/T interface cable to
the S/T interface of the NT1 device. Connect the ISDN U interface cable to the U interface on
the NT1 device.
Figure 191 Connecting a service provider U interface cable to a BSE interface module
BSE
•
If the service provider provides an ISDN S/T interface cable, directly connect the service
provider cable to the RJ-45 interface on the BSE interface module.
ISDN S/T interface crossover cable
ISDN S/T interface standard cable
ISDN S/T interface standard cable
S/T
ISDN U interface cable of service provider
NT1
S/T U
188
TE