
Chapter 2 Installation IP6704A TDMoEthernet
Loop Telecommunication International, Inc.
15
NOTES:
1.
You should do ACO HW load default after you changed the E1/T1 mode.
Figure 2-6 Jumper Locations for Port A Port B E1/T1
120 Ohm
E 1 Card
JUM1
JUM9
Open = OFF
Closed = ON
JUM3
JUM2
JUM4
JUM5
JUM 6
JUM10
J
U
M
8
75 Ohm
E 1 Card
JUM1
JUM9
Open = OFF
Closed = ON
JUM3
JUM2
JUM4
JUM5
JUM6
JUM10
J
U
M
8
Figure 2-7 Jumper Locations for E1 Plug-in card
NOTES:
1.
For 75 ohm E1 plug-in card, jumper 9 can be OPEN or ON. If jumper 9 is OPEN,
BNC connector is set to Unassigned. If jumper 9 is ON, BNC connector is set to
Chassis Ground.
2.
For 120 ohm E1 plug-in card, jumper 9 can be OPEN or ON. If jumper 9 is OPEN,
port 7 and port 8 of BNC connector is set to Unassigned. If jumper 9 is ON, port 7
and port 8 of BNC connector is set to Chassis Ground.
3.
BNC is open when jumper 10 is open; BNC is grounded if jumper 10 is closed.
4.
When BNC connector is selected, the user has the option of grounding the received
BNC shield by installing a jumper clip on the jumper location. This is usually not
necessary, but if you have any noises on your device, it can often be filtered out by
using this grounding process.