User Manual

November 1999
M68333 Rev. A Tel-Link PMP - Sector Terminal Installation & Maintenance Manual 11-5
11.3.2 Hot Swap/Redundancy Test
The following steps will demonstrate the “Hot Swap” and redundancy features of the Sector IDU. Boards
will become functional when inserted into a powered chassis. A functional redundant board automatically
replaces a simulated board failure with the time frame listed below:
NOTE: The Sector IDU Chassis shall be equipped with a non-redundant set of boards and has
achieved an operational state. A communications link between a Sector and Remote
Terminals shall be established with the Remote Terminal configured in a network loopback
state.
11.3.2.1 Sector ATM Controller (SAC)
STEP 1. Insert a SAC board into the secondary SAC slot and allow the SAC to undergo its self-
test functions. Verify the secondary SAC is configured as the spare unit.
STEP 2. Pull the primary SAC board.
STEP 3. Initiate a Get All command on the SAC Section. The SAC Chassis Window should
refresh with configuration parameters and the following will occur:
• The redundant SAC board will show the configuration parameters of the “Failed” pri-
mary board.
• The Red LED on the redundant SAC board will extinguish.
• The link to the Remote Terminal will lose lock and then reacquire within 10 seconds
SECTOR IDU
BOARD
RECOVERY
TIME
Sector ATM Controller < 15 Seconds
Modulator < 15 Seconds
ODU Mux < 10 Seconds
Demodulator < 15 Seconds