H3C Technologies H3C MSR 50 - Manual (Page 76)

2-56
z
When purchasing a SIC-1VE1 interface module, users should purchase a VCPM and configure a
VPM based on voice traffic.
z
No VCPM is required, but only a VPM needs to be installed on the main board when MSR 20-1x
series routers need to be equipped with a SIC-1VE1 interface module.
z
VCPM and VPM need to be installed on the main board when MSR 30 series routers need to be
equipped with a SIC-1VE1 interface module.
z
VCPM and VPM need to be installed on the MSCA module when MSR 50 series routers need to be
equipped with a SIC-1VE1 interface module..
Interface attributes
Table 2-44 Interface Attributes of the SIC-1VE1
Attribute Description
Connector DB 15
Number of connector 1
Interface standard G.703, G.704
Interface rate 2.048 Mbps
Frame format
z
Ethernet_II
z Ethernet_SNAP
z IEEE 802.2
z
IEEE 802.3
Cable type
z
75-ohm unbalanced coaxial cable
z
120-ohm balanced twisted pair cable
z Coaxial connector, network interface connector and 75-ohm to
120-ohm adapter (with BNC connector)
Operation mode
CE1
ISDN PRI (only supported by SIC-1VE1)
R2
Services
z
Backup
z
Terminal access
z
ISDN (only supported by SIC-1VE1)
DIP switches
CE1/PRI/R2 interface is compatible with 75-ohm and 120-ohm impedance. Matching of different
impedance is implemented through an 8BIT DIP switch. By default, all the DIP switches are set to ON,
as illustrated in the following figure: