Migrating a DEFINITY Server SI in an MCC to an S8700-Series Media Server with Fiber-PNC
720 Upgrading, Migrating, and Converting Media Servers and Gateways
High-reliability or critical-reliability configuration
To set up a high- or critical-reliability configuration:
Note:
Note: You can replace the maintenance circuit pack with the TN775D Maintenance
(EPN) (if necessary) and the TN2182 Tone Clock circuit packs. Replace these
circuit packs with the TN2312BP Internet Protocol Server Interface (IPSI) circuit
packs and program them ahead of time. All the circuit packs being replaced are
hot-swappable. Hot-swappable means you do not need to turn off the PNs or the
carrier.
These procedures assume that the tone clock and maintenance circuit packs are in the A and B
carriers. If one of them is in the E or D rather than B carrier, the ribbon cable is not necessary.
1. Determine which PNs get the IPSI circuit packs. For more information, see Duplex reliability
configuration on page 717.
Note:
Note: Not all port networks require an IPSI circuit pack.
2. Type status system all and press Enter to determine:
● Which PNs have TN2182 Tone Clock circuit packs
● Which media gateway they are in
● Which is active
● Which is standby
3. If needed, type set tone-clock cabinet carrier and press Enter where cabinet
is 1-64 and carrier is A-E to make the tone clock in the B carrier active.
4. Remove the TN2182 Tone Clock circuit pack from the standby carrier (A). Place the circuit
pack in an antistatic carrier or bag.
Note:
Note: If present, do not remove the TN771 Maintenance/Test circuit pack.
5. Remove the TN775B/C Maintenance/Test circuit pack from standby carrier (A). Place the
circuit pack in an antistatic carrier.
6. Insert the TN2312BP Internet Protocol Server Interface (IPSI) circuit pack part way into the
TONE-CLOCK slot on the standby carrier (A).
7. Attach one end of the short ribbon cable to the connector on the component side of the
circuit pack. The red line must be on the bottom (pin 1).
8. Push the tabs on the ends of the connector inward to lock the connector in place. See
Ribbon cable connector
on page 718.
9. Thread the ribbon through the slot on the front panel.
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