Specifications

Chapter 2 Maintenance
2-1
MAINTENANCE
Note: Electrostatic Discharge (ESD) Safety Procedures MUST be followed when
handling all circuit cards.
REPLACE CHANNEL/LINE CARD - HOT SWAP
To replace a channel line card while the unit is "hot":
1. Simply unscrew the thumb screws on the back of the Access Bank (Note: Later
releases will not have a middle thumb screw).
2. Remove the back panel.
3. Lift out the card ejector latches located on the sides of the card to be removed.
This will pull the channel card out of its electrical connector on the far end.
4. Slide the card out of its card slot.
5. Set the gain/loss settings on the new card.
6. Slide the new card into the chassis, being careful to be sure the card is correctly
positioned in the card slot.
7. After the card has stopped sliding in, press the card ejector latches firmly in to
seat the card in its electrical connector.
8. Place the back panel onto the unit and screw down the thumb screws.
9. Be sure to configure the signaling options and Trunk Processing Switch to the
correct settings.
Please note: Hot Swapping an FXS card will cause all 24 channels to go through trunk
processing for 16 seconds. All calls will be disconnected and must be redialed after the
Access Bank returns to normal state.
Channel 22
Channel 21
Channel 20
Channel 19
Channel 18
Channel 17
Channel 16
Channel 15
Channel 14
Channel 13
Test 20
Test 19
Test 18
Test 17
Test 16
Test 15
Test 14
Test 13
TP Busy/Idle
Option C
Option B
Option A
Test 12
Test 11
Test 10
Test 9
Channel 12
Channel 11
Channel 10
Channel 9
Channel 8
Channel 7
Channel 6
Channel 5
Channel 4
Channel 3
Channel 2
Channel 1
Test 8
Test 7
Test 6
Test 5
Test 4
Test 3
Test 2
Test 1
TP Busy/Idle
Option C
Option B
Option A
Test 24
Test 23
Test 22
Test 21
Channel 24
Channel 23