DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126 Issue 4
June 1999
Additional Maintenance Procedures
6-3Software updates
6
If these conditions are not met, The upgrade software call-override op tion must
be used, and the up date will result in a system reset level 2 (co ld-2 restart). An
additional option, preserve-calls, can be ad ded to force the system to attemp t to
preserve calls, but this must b e used with care. If the inc ompatibility is great
enough, this option may cause the system to escalate to a reboot (reset system
4). It is recommended that you esc alate any such software upd ate.
Call-Preserving Update
During a call-preserving update, calls in which two or more parties are
connected and talking are preserved. The following types of calls are drop ped:
wideband ca lls, held calls, dialing calls, and c alls that are connected to
announcements, speech sy nthesizers, or tones. Administered c onnections are
dropped and automatically restored. Feature activation attemp ts are ignored. No
new calls are processed for a brief period . This period usually lasts less than 5
seco nds b ut c an la st up to 1 m inute dep end ing o n tra ffic load dur ing t he SPE
interchange. Conference c alls that attempt a new connec tion are either ignored
or dro pped.
Call-Dropping Update
During a call-dropp ing update, the effect will be similar to a cold -2 restart (reset
system 2). All calls and system links d rop, and the MT login is term inated. The
service outage lasts up to 4 minutes.
Preparing for a Software Update
1. Notify users of anticipated servi ce effects desc ribed in the prec eding
section and arrange to do the update at a suitable time. Also advise
appropriate users of the followin g feature interactions:
■Administered connec tions are temporarily dropp ed.
■Leave Word C allin g me ssag es st ored in the SPE are lo st. Th ose
stored in a Message Server Adjunc t or AUDIX system are saved.
■Some feature settings will be lost and must b e restored afterward.
The effect is the same as a cold-2 restar t. Features affected include
night service, trunk/hunt group control, and manual/c lock-manual
override status on time of day routing . For example, hunt groups
and attendant are put into nig ht service after the upd ate.
■ACD queues will be lost. There is no mechanism to drain the
queues. CMS or BCMS can be used to monitor the q ueue lengths.
If it is important to empty all q ueues before the update, you must
coordinate with the customer to red irect traffic away from ACD
splits before the upd ate. Changing vectors to temporarily route
calls to a disconnec t announcement is one way to accomp lish this.
ACD agents will need to log in again after the update and their
status lamps may be inc orrect for about an hour (until p eriodic
background main tenance completes one c ycle).