DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Additional Maintenance Procedures
6-2Software updates
6
Release 7r loads:
The
Boot Image
field contains “m” (mips) for Release 7r systems.
The system expects any software upgrade to be going from a lower, or older
version number, to a higher, or newer version number. To install an older version
(for example, when backing out a failed upgrade), follow normal escalation
procedures to avoid putting the system into a corrupted state.
Each software version also has a compatibility index of the form:
Differences between old and new version numbers and compatibility indexes
can be used to determine what service effects can be expected from the update.
See the ‘‘Service effects of a software update’’
section that follows.
Service effects of a software update
Simplex SPE
The
upgrade software
command executes a system reboot similar to a
reset
system 4
. Emergency transfer is invoked and all calls drop. The MT login is
terminated and error logs are cleared. The service outage lasts for a period of up
to 15 minutes. Results of each step in the upgrade process and initialization
diagnostics are displayed on the terminal screen. Screen output is described in
Maintenance Commands
,
upgrade software
. Failure of initialization will produce
an SPE-down mode, described in
Initialization and Recovery
. Translations are
reloaded from the primary storage device and reformatted for the new software if
necessary.
Duplicated SPE
On a system with a duplicated SPE, a software update may be either
call-preserving
or
call-dropping
. The compatibility of the old and new versions
determines which type of update is performed. If the major fields of the
compatibility indexes of the two versions are equal, then a call-preserving update
is possible. The documentation accompanying the update tapes (Engineering
Design Information, or EDI, and the Release Letter) should confirm this. With rare
exceptions, this is the case when the Feature Version and Product ID numbers
match.
G3r5 m 01 2 0 078
Product Boot Major Minor Unscheduled Load
ID Image Release Release Release Number
81
Major Field Minor Field
