3com MSR 20 User Manual
SIC-1VE1
45
Step 2: Check the status of LINK LED on the GEC panel: ON means the link is
connected and OFF means the link is not connected. In the latter case, check the
line.
connected and OFF means the link is not connected. In the latter case, check the
line.
SIC-1VE1
Introduction
1-port E1 voice interface card (SIC-1VE1) can handle dense voice signals in VoIP
system. It provides a CE1/PRI/R2 port, allowing the access of 30 channels of voice
signals.
system. It provides a CE1/PRI/R2 port, allowing the access of 30 channels of voice
signals.
n
■
When purchasing a SIC-1VE1 interface card, users should purchase a VCPM
and configure a VPM based on voice traffic.
and configure a VPM based on voice traffic.
■
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
card.
when MSR 20-1x series routers need to be equipped with a SIC-1VE1 interface
card.
■
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 card.
routers need to be equipped with a SIC-1VE1 interface card.
■
VCPM and VPM need to be installed on the MSCA card when MSR 50 series
routers need to be equipped with a SIC-1VE1 interface card.
routers need to be equipped with a SIC-1VE1 interface card.
Interface Attributes
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:
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:
Table 20 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
Ethernet_II
Ethernet_SNAP
IEEE 802.2
IEEE 802.3
Cable type
75-ohm non-balanced coaxial cable
120-ohm balanced twisted pair cable
Coaxial connector, network interface
connector and 75-ohm to 120-ohm
adapter (with BNC connector)
connector and 75-ohm to 120-ohm
adapter (with BNC connector)
Operation mode
CE1
ISDN PRI (only supported by SIC-1VE1)
R2
Services Backup
Terminal access
ISDN (only supported by SIC-1VE1)