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2.2.7
Internal/ external ISDN connection 1
2.2.8
elmeg C46e:
Internal/external ISDN connection 1
Can be used only as an internal ISDN connection.
When the NSP (emergency power supply) module is used, it is imperative on
the elmeg C48 m and the elmeg C88m that this connection be used as an
internal ISDN connection.
Figure 11 illustrates the connection circuit for the internal ISDN connection 1.
This connection is provided with interfacing to an ISDN jack for the internal
ISDN connection and fixed interfacing to the terminals for the internal or external
ISDN connection.
First remove the jumper for switchover for external connection (see Fig. 11)!
S01:INT
FE
3
5
6 7
1
2
4
a2 a1 b 1 b 2
n ic h t b esc h altet
Fig. 11: ISDN connection 1 of the elmeg C48m and elmeg C88m (internal)
Jumper for switchover
installed: internal ISDN connection
open: external ISDN connection
ISDN jack for
internal ISDN connection
ISDN terminal block
for internal and external ISDN connec
ISDN terminal block removed
a2 a1 b1 b2
a1 a2 b2 b1
S01:INT /EXT
Assig nm ent for S01: Internal ISDN c onnec t
Assignm ent for S01: Ex ternal IS D N c o nne
8
24
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