Premigration administration
Issue 2.1 June 2006 667
Also, with Communication Manager Release 2.0 or later, you can put an IPSI in a
DS1-C-remoted PN.
To place the IPSI circuit packs correctly, follow these rules:
● When you place an IPSI in a DS1-C-remoted port network, make sure that you administer
the nonremoted IPSI first and that you set the IP Control field to y. You do not have to set
the IPSI in the DS1-C-remoted PN to no. However, if you set to y, customers must run
Ethernet from the IPSI and there is limited control (1:2 versus 1:5).
● Place the reference IPSI in the PN with the shortest Ethernet connection to the media
servers. The reference IPSI is the one whose serial number is used in the license file. This
placement minimizes the amount of data network that could fail between the IPSI and the
media servers and cause the system to switch to No License mode.
● Use the following formulas to determine the minimum number of PNs that require an IPSI:
- Duplex (direct connect): One IPSI controls up to three PNs. If you use one or two PNs
and you add a G650 media gateway PN, it may have an IPSI. If you use two IPSIs, the IP
control for one IPSI is yes and the other is no.
- Duplex (CSS or ATM): Divide the total number of PNs by 5 (if the result is not an integer,
round up), and add one.
- 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
!
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 and program
these new circuit packs prior to installation. All the circuit packs being replaced
are hot-swappable. Therefore, you do not need to turn off the PNs or the carrier.
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