Upgrading and administering the existing hardware
58 Migrating to the Avaya S8700 or S8710 Media Server
June 2004
• The minimum number of port networks that require an IPSI is determined by the following
formulas:
— Duplex (Direct Connect): 1 IPSI controls up to 3 PNs. If 1 or 2 PNs and if a G650 media
gateway PN is added, it may have an IPSI too. If 2 IPSIs are used, the IP control for 1 is
yes and the other is no.
— Duplex (Center Stage or ATM): Total Number of PNs divided by 5 (if not an integer,
round up), plus one.
— High/Critical: Total Number of PNs divided by 5 (if not an integer, round up). For each
IPSI-connected PN, you need 2 IPSIs.
Guidelines:
• On large configurations that contain multiple switch node carriers, IPSIs should be placed 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.
Standard (simplex) reliability configuration
!
WARNING:
The following procedure affects service when the circuit packs are being switched out. Coordinate
this activity with the customer to minimize disruption of customer activities.
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-2) circuit packs and program them ahead of time. All the
circuit packs being replaced are hot-swappable, so you do not need to power down the
PNs or the carrier.
1 Type list cabinet and press Enter to determine which PNs have TN2182 Tone Clock circuit packs
and in which cabinets they are in.
2 In cabinets receiving an IPSI circuit pack, remove the TN2182 Tone Clock circuit pack from the
expansion control carrier and place it in an antistatic carrier.
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 and
place it in an antistatic carrier.
4 Insert the TN2312BP Internet Protocol Server Interface (IPSI-2) circuit pack part way into the
TONE-CLOCK slot.
5 With the red line on the bottom (pin 1), attach one end of the short ribbon cable to the connector
on the component side of the TN 2312AP circuit pack. See Figure 4, Ribbon Cable Connector,
on
page 59.
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