Teldat C+ Series Manual page 12

1 Installing the Router
the band frequencies for voice telephony from those used by the ADSL connection to transmit data. This prevents in-
terferences between the telephone service and ADSL service and vice-versa.
A typical installation with a splitter is shown in Figure 1.29.
Fig. 29: ADSL installation with a splitter
The micro-filter
The G. Lite (ITU G.922.2) operating mode uses reduced transmission power, allowing telephones directly connected
to the same line to be used with the help of a device known as a "micro-filter" . This device ensures the ADSL signal
does not reach the telephone and undesired signals generated by the telephone do not interfere with the ADSL sig-
nal.
A typical installation with a micro-filter is shown in Figure 1.30.
Fig. 30: ADSL installation with micro-filter
For ADSL over ISDN, the above information for operations over PSTN is applicable. However, you must bear in mind
that the frequency bands used are different, so you must use specific splitters and micro-filters for ADSL over ISDN.
1.2.2.2 ISDN Connection
The ISDN interface has a female RJ45 connector to connect to the 4-wire S bus coming from the ISDN (NT1 or TR1)
network terminator.
Use the RJ45 male connector cable for this, which is provided with the router.
Passive-Bus termination resistors
The Teldat C+ have a pushbutton (labeled TERM.) that allows you to connect the BUS-S termination resistors.
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Teldat S.A.
Teldat C+ Router Family