SmartNode Installation
55
10.13.3 Interface Card Configuration
Before using an IC-4BRV interface card in your SmartNode 2000 series the interface card has to be
configured according to the application scenario. Refer to Chapter 5 for a more detailed description
of this procedure.
10.14 S-Bus Installation
10.14.1 General Notes on S-Bus Installation
When installing an ISDN S-bus and its up to eight connected devices, bear in mind that the relevant
ITU-T, ETSI and ANSI standards for your equipment must be met. Your ISDN provider will help
you to ensure that you comply with the relevant standards.
An S-Bus must be terminated at both ends with 100 Ohm; such termination should be at the extreme
ends of the bus. Note that only the one device at the end should be terminated: SmartNode interfaces
are internally terminated at 100 Ohm.
It is recommended that a screened cable be used of a type that has been tested to at least ISO/IEC
11801 Category 3.
According to ITU-T the maximum length of flex connecting the bus with terminal equipment may
not exceed 10 meters. Some ISDN providers or devices may require a lesser distance, so consult your
suppliers. In accordance with ITU-T the maximum length of the S-bus depends on the delay constant
of the cable. If this is too great the time sequence of the equipment signals attached to it may be
corrupted. The maximum distance between NT1 and TE is theoretically 200 meters, but in practice
150 meters is the usual maximum.
10.14.2 SmartNode BRI Port Configured in USR Mode and Connected to an S-
Bus
The SmartNode acts as TE on the S-Bus: usually no other TE are connected on the S-Bus between the
NT1 and the SmartNode. The general S-Bus conditions apply, the maximum recommended bus
length is 150 meters. Note that SmartNode BRI interfaces are internally terminated at 100 Ohms.
10.14.3 SmartNode BRI Port Configured in NET mode
The SmartNode acts as NT1. The general S-Bus conditions apply, the maximum recommended bus
length is 150 meters. Note that SmartNode BRI interfaces are internally terminated at 100 Ohms.
10.15 Installing an S-Bus Power Supply
If your SmartNode 2000 series needs to be equipped with an optional Line Power Module refer to
Chapter 9 for a more detailed description of this procedure. Check that the jumper pins are correctly
set for your method of using the IC-4BRV interface card: see Chapter 5.
10.15.1 Installing Interface Cards
Follow the detailed installation description in Chapter 7 to install an optional interface card into your
SmartNode 2000 series.
10.16 Site Installation of SmartNode 1000 or 2000 Series
During installation and wiring the SmartNode must be disconnected from the mains power supply.
See the applicable instructions in the following sections.
Hardware Installation Guide, Revision 3.11
