E&M Interface - H3C MSR Router Comware 5 Series Manual

Figure 185 Connecting the U interface cable to the SIC-1BS interface module
Magnetic-core telephone cable
SIC-1BS
If the service provider provides an ISDN S/T interface cable, directly connect the cable to the
2.
RJ-45 interface of the SIC-1BS interface module.
Figure 186 Connecting the S/T interface cable to the SIC-1BS interface module
E&M interface
E&M interface appearance and the applicable model
MIM-4E&M / FIC-4E&M modules support Bell I, II, III, V switches, and 2-wire & 4-wire voice signals.
As a best practice, use Bell V 4-wire voice signal to communicate with the router in practice.
The sequence of E&M RJ-45 pins is shown in the following figure, numbered 1 to 8 from left to right:
ISDN U interface cable of Service provider
NT1
S/T U
183