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Port Assignment, Termination, Cable Length
48
Installation
Several IAE sockets can be series connected using a bus installation. For the
following example, activate the
Telephony
:
Ports
:
S0(#)
:
Line termination
option in the
Configurator
. In the last IAE socket, 100 ohms terminating
resistors between 1a and 1b as well as between 2a and 2b are required.
Connecting several IAE sockets
IAE = ISDN wall socket (German ISDN „Anschluss Einheit”)
If the S0 bus is coming from the Forum 523/524 leading to one or more IAE
sockets, the terminating resistors (“TR”) in the Forum 523/524 and in the
most distant IAE socket needs to be switched on.
2a 2b 1a 1b
1a 1b
2a 2b
1a 1b
2a 2b
1a 1b
2a 2b
1a 1b
2a 2b
1a 1b
2a 2b
1a 1b
2a 2b
100 ohm termination impedance
in the last socket
cable: max. 130 m
Line termination:
Enabled
IAE
IAE
IAE
Summary of Contents for forum 523
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Page 10: ...8 ...