1
NOTE:
When the data rate is set to 2.048Mb/s, then the unit is in
G.703 mode, and it transmits user data on all 32 timeslots. There
is no framing information; therefore, the CAS MF (SW2) is ignored
and SW3 defaulted to clock mode. In all other rate settings, the
unit employs G.704 framing; TS0 is reserved for signaling.
2
NOTE:
When not in clear channel and CAS multiframe is On
(SW2 = On), the setting for 1984 kbps is defaulted to 1920kbps.
3.2 CONFIGURING THE 1000RCM13448C REAR CARD
The Model 1000RCM13448C M/34/RJ48C Ohm rear card has two
configuration jumpers (JB3 and JB4) that may be used to connect
Signal Ground to Frame Ground on each interface (M/34 or RJ-48C).
Figure 4 (below) shows the locations of the jumpers on the 120 Ohm
rear card.
Figure 7 shows the strap location for the Model 1000RCM13448C
(M/34/RJ-48C) rear card.
FRGND & V.35 PIN A (FRGND) (JB3)
In the connected position, this strap links Frame Ground of the
2715RC and Pin A (Frame Ground) of the V.35 connector. In the open
position, signal ground is disconnected from frame ground.
JB3
Position 1&2 = FRGND and V.35 Pin A Connected
(default)
Position 2&3 = FRGND and V.35 Pin A Not Connected
SGND & FRGND (JB4)
In the connected position, this strap links Signal Ground and frame
ground through a 100 ohm resistor. In the open position, signal ground
is disconnected from frame ground.
JB4
Position 1&2 = SGND and FRGND Connected
(default)
Position 2&3 = SGND and FRGND Not Connected
9
10
Figure 5.
Orientation of Interface Card Straps
connected
open
Figure 7.
1000RCM13448C strap locations
JB4 JB3
123 123
