Nortel DMS-100 Series Reference Manual page 290

4-40 Datafilling BAS on RSC-S UK / Europe
Basic call processing
Implementation of PPXLs
At the start of each PPXL loadfile, a 1K data block that contains patch IDs is
present. These patch IDs are for the patches in the PPXL. The patch files
for each patch ID in the 1K data block must be present. The patch files must
be present when the user enters the PPXL in table PMLOADS.
When the user enters the PPXL in table PMLOADS, the loadset changes if a
loadset is present for the base load. The system creates a loadset if the base
load is new to the DMS-100 switch.
After the PPXL is added to table PMLOADS, load the PPXL. The system
recovery controller (SRC) can also load the PPXL. After the PPXL is
loaded, a reduction or removal of the patching occurs. The reduction or
removal occurs because the load includes the patches.
When PPXL is loaded, additional patches can be applied or removed from
the PPXL like an XPM load. Internal patches can also be removed if
corresponding patch files are present.
The system applies or removes patches of reloads after a PPXL is loaded.
PPXL Naming Convention
The PPXL file names have "_<date>" attached to the end of the
corresponding base load name. For example, a PPXL load file for base load
ECL03BX. The name of this file is ECL03BX_941129. The base load
name remains the same. The system identifies the Base loads as a load
without the _<date> suffix.
The known value becomes the preservation of the patch stream with the
ability to up-issue a PPXL. The date identifier identifies the vintage of a
PPXL.
PPXL storage requirements
Operating companies must double the XPM load storage requirements to
adjust to the PPXLs before PPXL load. The PPXLs require storage of the
PPXL loadfile on the ACTVOL device. The PPXLs require storage of the
base load file on the BKPVOL device.
297-8331-815 Standard 10.01 August 1999
(continued)
Note: Loadsets group peripheral units with the same load together. To
view the loadsets on the DMS-100 switch, access the PATCHER CI level
and enter the command string INFORM PMALL.