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USER’S GUIDE
50 CyberSWITCH
THE CSX1200-U4-MOD
The CSX1200-U4-MOD is a U-interface option card for the CSX1200 family. This module is only
relevant for applications in North America, since North American telephone companies typically
do not provide the needed U-interface conversion. The CSX1200-U4-MOD performs the function
of an external NT1, and is available for the BRI (1201, 1204) CSX1200 models. Below, we show the
module installed in a CSX1223.
The module consists of four pairs of numbered RJ45 ports. To activate the installed module, you
must properly connect the CSX1200 BRI ports to the corresponding S/T interface ports on the U4
module. This process, along with complete installation instructions, is detailed in the Hardware
Installation chapter.
This module is also equipped with four NT1 Status LEDs to indicate the status of each of the ports.
Refer to the LED Indicators chapter for further information.
CONSOLE
10Base-T
AUI
SLOT 1
SLOT 2
S
L
O
T
4
S
L
O
T
3
S/T U S/T U S/T U S/T U
1234
CSX1223 with CSX1200-U4-MOD
B25B27
B26B28
WORKGROUP REMOTE ACCESS SWITCH
B29
E1 ONLYB-CHANNELS
LAN
10BASE-TRXTXSERVICE
B31
B30 L1
B21B23
B22B24
B17B19
B18B20
B13B15
B14B16
E1
D
T1
D
B9 B11
B10B12
B5 B7
B6 B8
B1 B3
B2 B4
POWER