Vanguard Managed Solutions Vanguard 6435 - Handbuch (Seite 65)

Hardware Description 2-31
Vanguard 6455 Option Cards
Alarm LEDs Each interface is supported by an alarm LED that illuminates whenever an error is
detected on the T1/E1 interface.
Rear Panel
Connectors The T1 version of the VoIP Convergence Card has two RJ48C connectors. The E1
version of the card has two RJ48C and four BNC connectors. Figures 2-40 and 2-41
show these connectors.
Figure 2-40. RJ48C Connector and Pinout
Figure 2-41. BNC Connector: RX and TX
E1 Line Impedance
Adjustments Each E1 line termination can be set to either 75
Ω
or 120
Ω
using the DIP switch on
the card (shown in Figure 2-36). The line impedance can be adjusted to either of
these settings as illustrated in Figure 2-42.
Figure 2-42. E1 Impedance DIP Switches
Note
The T1 line impedance is permanently set to 100
Ω.
Pin Signal Pin Signal
1 Receive Ring 5 Transmit Tip
2 Receive Tip 6 No Connection
3 No Connection 7 No Connection
4 Transmit Ring 8 No Connection
Pin 1 Pin 8
TX
Transmit Tip
Transmit Ring
Receive Tip
Receive Ring
RX
1 O 2
75
Ω
Setting 120
Ω
Setting
N
1 O 2
N