Swyx SwyxConnect 1722, User Manual

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Configuring the ISDN and analog interfaces 2-13
SwyxConnect 1722
and SwyxConnect
1724 only • The ISDN power relay means that the bus voltage of an external
ISDN bus at ISDN 1 is switched through to the terminal
equipment connected to ISDN 2 (SwyxConnect 1722) and/or
ISDN
3 (SwyxConnect 1724). As a consequence, ISDN
equipment operated at the internal ISDN bus of the Swyx VoIP
Router can be operated without its own power supply.
Be sure to deactivate the ISDN power relay if both ISDN interfaces
are to be operated in TE mode, such as when both ISDN interfaces
are connected to an ISDN NTBA, for example. A power relay in this
situation would result in a short-circuit which would damage the
device and the ISDN NTBAs!
To activate the power relay, the corresponding DIP switches (7
and 8 on the SwyxConnect 1722, 5 and 6 on the SwyxConnect
1724) must be up; to deactivate, the DIP switches must be down.
Only SwyxConnect
1723 • With the internal power supply , the model SwyxConnect 1723
supports a maximum of two telephones without their own
supply; power is fed from the ISDN2 interface
.
To activate the internal power supply, the corresponding DIP
switches (1 and 2) must be up; to deactivate, the DIP switches
must be down.
The power supply switches off automatically in case of overload, and
switches on again once the load drops.
1. Before altering the DIP switch settings, remove all cables from
their sockets.
2. Remove the see-through cover of the DIP switch.
3. We suggest that you use a screwdriver to set the DIP switch to
the desired position.
SwyxConnect 1722 SwyxConnect 1723
DIP Meaning Default Meaning Default
1 + 2 ISDN 2 Rx/Tx
(100
Ω
bus termina-
tion)
up (on) Power supply
ISDN2 up (on)
3 + 4 Life-line support up (on)
5 + 6 up (on) Life-line support up (on)
7 + 8 ISDN power relay
ISDN 1 > ISDN 2
up (on) up (on)