Nortel Communication Server 1000S Installation And Configuration Manual page 61

3 Insert the MISP into the selected card slot and lock it in place.
4 Observe the behavior of the LED on the faceplate of the MISP to
determine its status:
• The LED lights, flashes three times and then stays lit – the MISP is
operating correctly but is not configured and enabled.
• The LED lights, flashes three times and then turns off – indicates the
MISP is operating correctly and is configured and enabled.
• Any other LED behavior indicates a defective MISP circuit card.
Note: The Flash ROM can become corrupted if loss of power occurs
during programming of the Flash ROM. If this occurs, the Flash ROM
automatically re-initializes when the MISP is installed and powered up.
The automatic re-initialization delays the completion of the self-test, and
it takes five minutes for the LED to flash three times.
5 Repeat the steps for each MISP.
Procedure 15
Removing the MISP
1 Hold the MISP by its card-locking devices. Squeeze the tabs to unlatch
the card-locking devices and lift the tabs out and away from the card.
2 Carefully remove the MISP from its card slot.
Installing the clock controller on the MISP (for trunking
applications)
A clock controller is only required for ISDN BRI trunk applications. The system
supports a single active clock controller. This clock controller can support a
primary and a secondary reference clock. These reference clock sources are
derived from BRI spans or DSLs (DSL 0 and/or DSL 1).
A clock controller is required in every cabinet or MG 1000S that contains a
digital trunk.
The line cards associated with BRI DSLs used as clock references are
installed in the Small System main cabinet or Media Gateway.
ISDN Basic Rate Interface
Configuring ISDN BRI hardware
End of Procedure
End of Procedure
Page 61 of 120
Installation and Configuration