7
8
Set Switch S3 to “Network” timing to derive timing from the G.703
access port.
Set Switch S3 to “Modem” timing to derive timing from the
received line.
You must also set the timing on the NetLink front card. The table
below shows the appropriate setting for the IM2RC/F-128 timing
modes.
Switches S4 and S5:
Reserved for Future Use
Switches S4 and S5 are reserved for future use and should
remain in the Off position.
Switch S6: Operation Mode
In some cases it is necessary to include bi-polar violations in the
AMI structure when operating in Clear Channel (128 kbps) mode. This
necessity is determined by communications or terminal equipment
external to the the IM2RC/F-128K. Use Switch S6 to configure the unit
to transmit G.703 data to the network with or without BPVs.
S6
Setting
On
No BPVs
Off
Injected BPVs
Switches S7 and S8:
Reserved for Future Use
Switch S7 and S8 are reserved for future use and should remain
in the Off position.
3.2 CONNECTING THE INTERFACE DRIVER BOARD
This package contains an interface driver board that allows you to
configure your front function card for G.703 operation. Figure 3 shows
the Interface Driver Board connected to a Model 1092ARC front func-
tion card (You may also use this product with other Patton rack cards,
such as Model 1094ARC and 1095RC).
Follow the instructions below to connect the interface driver board
to the front function card:
1.
With the function card (such as 1092ARC, shown above)
pulled out of the rack or clusterbox chassis, locate the driver
board to be replaced on the top of the base unit front card.
2.
Lift the old interface board gently off of the PC board.
3.
Position the IM2RC/F-128K driver board on top of the function
card’s pc board with the sockets oriented toward the male
pins. Please be sure the label marked FRONT is
pointed toward the front of the function card (toward the
LEDs).
4.
Push the Interface Driver Board gently onto the socket and re-
install the function card into the rack or cluster system.
ON
12345678
ON
12345678
Figure 3 Model IM2RC/F Driver Board mounted on Model 1092ARC
Interface Driver Board
Model
1092ARC
ON
1234
FRONT
TABLE FOR TIMING CONFIG.
IM2RC/F-128
NetLink Card
Network
External
Modem
Receive Recover Internal
