Aastra OpenCom 100 Mounting And Commissioning User Manual page 51

Installation
In the case of the OpenCom 100, the S
make this setting in the S
console.
You can connect up to eight terminals on every internal S
terminals can operate without an external power supply. The length of the four-
wire cable of an internal S
of each internal S
0
S Ports on Interface Cards
0
OpenCom
R
IAE IAE
The S bus is terminated at one end by the OpenCom 100.
0
IAE = ISDN socket (German: "ISDN Anschluss Einheit") or an ISDN terminal.
TR = terminating resistor, the S
line. This can also be done by an appropriately wired IAE.
OpenCom
TR
IAE
The S bus is terminated by the TR at the ends.
0
1a TR
1b
2a TR
2b
Termination on an ISDN socket
port configuration in the Configurator on the Web
0
bus must not exceed 150 m. The power consumption
0
bus is approx. 2 W.
TR
termination. The TR must be at the termination of the
0
R
TR
IAE
Port Assignment, Termination, Cable Lengths
buses are terminated by software. You
0
bus; up to three of the
0
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