User manual
Cabling
Straight-through RS-232 cable with DB9 connectors is supplied with each ISDN Simulator for the ISDN
Manager or console management. To connect ISDN devices to the simulator, also use a straight-through CAT3
or CAT5 cable with RJ45 connectors.
Controls
A hardware Reset button is on the back panel of the ISDN Simulator. You can also Reboot ISDN Simulator
remotely using ISDN Manager or AT commands sent via console port.
LEDs
Your simulator has four status LEDs (Table 2), numbered from left to right. Two are global to the simulator and
two are specic for ports.
Table 2: LED Denitions
LED number Function
1 Port A Status
2 Power Indicator
3 Device Mode
4 Port B Status
LED status indications are the fastest way to tell the status of the device.
Table 3: Interpreting the ISDN Simulator LEDs
LED Color LED 1 & 4 (Port)
LED 2
(Power)
LED 3 (Mode)
Off No connection No power No Calls in Progress or established
Red
Physical handshaking on the U
interface
Hardware
Failure
N/A
Yellow
Physical link established, data
link not active
N/A Call negotiation in progress
Green Data link active Power ON Call in progress
Blinking
green
SPID received, not matching N/A N/A
Green /
Red
N/A N/A Data transfer in progress
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User Manual
2 Port ISDN Simulator