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Provisioning Page 103 of 544
Option 11C and 11C Mini Technical Reference Guide
Calculating number of IPE cards required
Using information from “Worksheet A: Growth forecast” on page 135, enter
the number of Meridian Digital Telephone TNs, Analog (500/2500 type)
TNs, and trunk TNs required at cutover, two-year, and five-year intervals (for
all customers) in “Worksheet C: System cabinet / Main chassis requirements”
on page 138.
Divide each entry by the number of TN assignments for each card, round up
to the next higher figure, and total the number of cards required.
IPE card slot assignments with IP Expansion
If you are using IP Expansion cabinets, then trunk and line cards may be
distributed throughout each of the system cabinets in such a way as to allow
for survival operation. The intent is for a cabinet equipped with both trunk
and line cards in survival mode to still handle calls.
IPE card slot assignments without IP Expansion
If you are not using IP Expansion cabinets, then trunk and line cards should
be placed in the system cabinets in such a way as to allow for future
expansion. Line cards are placed in the left hand slots of the cabinets. If the
system is using the default numbering plan and consecutive DN numbering is
desired, the line cards should be placed one after another leaving no blank
slots in between. Trunk cards are placed in the right hand slots of the cabinets.
Plan the card slot assignments so that the trunk and line card growth is
towards the middle. For example Figure 6 on page 105 shows the slot
assignment plan for systems equipped with two expansion cabinets.
IPE card slot assignments on the Option 11C Mini Main Chassis
Digital trunks cards must be placed in the main chassis. Slot 4 must contain
the 48 port DLC. Figure 9 on page 107 shows the typical card slot assignment
for the Option 11C Mini Main.
Note: Slot 4 is keyed to prevent accidental insertion of cards other than
the 48 port DLC.