Migrating translations
Issue 2.1 June 2006 779
- High- or critical-reliability: Divide the total number of PNs by 5 (if the result is not an
integer, round up). For each IPSI-connected PN, you need two IPSIs.
● On large configurations that contain multiple switch node carriers, you must place the
IPSIs as evenly as possible among the switch nodes. Use the list fiber all
command to determine which port networks are connected to which switch node.
Duplex reliability configuration
To set up a duplex configuration:
!
WARNING:
WARNING: The following procedure affects service when you are switching the circuit packs.
Coordinate this activity with the customer to minimize disruption of customer
activities.
Note:
Note: You can replace the maintenance circuit pack with the TN775D Maintenance
(EPN) (if necessary) and the TN2182 Tone Clock circuit packs with the
TN2312BP Internet Protocol Server Interface (IPSI) circuit packs. You can
program these new circuit packs ahead of time. All the circuit packs being
replaced are hot-swappable, so you do not need to turn off the PNs or the carrier.
1. Type list configuration control. Press Enter to determine which PNs contain
TN2182 Tone Clock circuit packs and which cabinets contain the circuit packs.
2. In cabinets receiving an IPSI circuit pack, remove the TN2182 Tone Clock circuit pack from
the expansion control carrier. Place the circuit pack in an antistatic bag.
Note:
Note: If present, do not remove the TN771 Maintenance/Test circuit pack.
3. Remove the TN775B/C Maintenance (EPN) circuit pack from the expansion control carrier.
Place the circuit pack in an antistatic bag.
4. Insert the TN2312BP Internet Protocol Server Interface (IPSI) circuit pack part way into the
TONE-CLOCK slot.
5. Attach one end of the short ribbon cable to the connector on the component side of the
TN2312BP circuit pack. The red line must be on the bottom (pin 1). See Figure 51: Ribbon
cable connector on page 780.
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