User's Manual

Memory calculations 159

Note

34 : Each system that has DCHIs shares

P-DCH-TBL

which has 16

words in length. Each DCHI consists of the following protected data blocks:

P-DCHBLOCK

= 23 words

Releases 13 and 14:

P-DCH-BLOCK

= 25 words

Release 15:

PDCH-BLOCK

= 26 words

Protected call reference table = 1 + (24 x # of PRI loops controlled by

DCHI). If DCHI is in PRA mode, add the following:

Protected call reference table = 1 + (maximum number of ISL trunks

defined) if DCHI is in ISL mode

. .

Protected call reference table = 1 + (24 x # of PRI loops controlled by

DCHI) + (maximum number of ISL trunks defined) if DCHI is in SHARED

mode.

Note

For each ISA route configured for IFC = ESS4, add 2 words for

the ISA-SRVCBLOCK.

With Releases 14 and 15, if IFC = ESSY, add 4 words for the

ISA-SRVCBLOCK.

Note

36 : A pointer named ISA-SID-MTHPTR has been added to fix

memory. This pointer is set to nil when SID is not defined for ISDN routes.

A data block of 32 words is defined and accessed through this pointer if SID

is defined for at least one ISDN route in the system. This data block

contains pointer to SID tables for each customer. The structure mapping

onto this data block is ISA_(3uSTID_TPTR.

Memory calculations 553-2201-l 51 Appendix

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