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VISORNET - Installation
I-21
Doc. DM245-I
Rev. 7.0
"S" bus
NT1
Network term
ISDN
"S" Interface
(4 wires)
"U" Interface
(2 wires)
VisorNet 4c
Termination resistors ON
TelephoneTelephone Fax
Videoconferencing
Figure 1.14. Single or last terminal
Intermediate position on the ISDN “S” bus
The TERM button must be in the OFF position, if the VisorNet 4c occupies an
intermediate position on the ISDN “S” bus
"S" bus
NT1
Network term
ISDN
"S" Interface
(4 wires)
"U" Interface
(2 wires)
VisorNet 4c
Termination resistors OFF
TelephoneTelephone Fax
Videoconferencing
Figure 1.15. Intermediate position
I - 2.9. External MODEM connection
The VisorNet 4c has a female SCSI connector with 26 pins in order to connect to an
external modem. It should be used with a specific cable (SCSI 26 pins Male-DB25
Male) provided by Teldat S.A. The following shows the correspondence between the
signals at the two ends of the cable.