Teldat C Installation Manual page 12

1 Router Installation
quency bands used are different (meaning specific splitters and microfilters for ADSL over ISDN must be used).
1.2.2.2 ISDN Connection
The ISDN interface has a female RJ45 connector to connect to the 4-wire S bus from the ISDN (NT1 or TR1) net-
work terminator.
Use the RJ45 male connector cable proved with the router for this.
Passive-Bus terminal resistors
The Teldat C/S/G/A models have a pushbutton (labeled TERM.) where you can connect the S BUS teminal resist-
ors. The terminal resistors must be positioned correctly. If they aren't, errors in data or voice may occur (especially if
the S bus is long).
• Single or last terminal on the ISDN S bus
The TERM. pushbutton must be in the ON position if the router is the only, or last, element connected to the net-
work (NT1, TR1, etc.) terminator on the ISDN S bus. By default, the device is configured in the latter position.
Fig. 19: Single or last element
• Intermediate position on the ISDN S bus
The TERM. pushbutton must be in the OFF position if the router occupies an intermediate position on the ISDN S
bus.
Fig. 20: Intermediate position on the bus
8 Teldat C/S/G/A Routers Family Installation Manual
Teldat S.A.