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11.2
Configuring the transceiver 21-16xx
Table 16:
Settings
Switch, jumper
Setting
S2, S3, S4, S15, S16
Jumpers downwards
S6
Second position from bottom
S11
9
S14
Jumper at middle position
S13
Has no influence on operation
G.703 co-directional operation
Connect according to
table
Table 17:
Connections
Transceiver
1)
Signal
Pin
TX
1/2
RX
3/4
1)
RJ-45 connector. Numbered from left the connection points will bet this number
If a screen is available in the cable it is connected to Protection Ground (pin 9 on the transceiver)
at one or both ends.
Figure 25
shows the connection. Note that the signal directions are according to DCE operation
for both transceiver and communication equipment.
Tranceiver
TX(A)
TX(B)
RX(A)
RX(B)
Figure 25:
Connection between Transceiver and Communication equipment
Set transceiver according to
17.
Comm. eq.
Signal
Direction
RX
Comm. eq -> Transceiver
TX
Transceiver -> Comm. eq.
RX(A)
RX(B)
TX(A)
TX(B)
table
18.
Configuring the 56/64 kbit data
communication modules
Gives
DTE
X.21
64 kbit/s
External clock
---
Communication
equipment
en01000193.vsd
Chapter 8
79
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