AppendixA: Flash Download procedure Page 139 of 174
M3900Series Meridian Digital Telephones Description,Installation and Administration
• When a system is first brought into service with M3900 sets, there is a
significantamount of messaging that occurs to activate the sets through
theLamp Auditbackground routine. The time required to bring all sets
into service on a system is dependent on the system configuration, and
couldtake several hours. Performing a Flash Download directly after the
system is brought into service adds to the message load on the system.
Therefore, it isr ecommended that M3900 set download activities not
occur in conjunction with systems being brought into service. Instead
downloadsshould occur 24 hours after a system is brought into service.
• If a user attempts to use a set during a flash download, all set activity is
ignored.
• When performinga flash download to an M3900 port that does not have
a setinstalled, or downloading to an M3900 port that has the wrong
M3900set type installed, an SDL2110 error message is printed outat the
system.
• During the middle of flash download operation, if the set is disconnected
orif the set fails download for any reason, the set is rendered inoperable.
Flash downloading must run to completion before the set can be made
operable.
• For the manual individualdownload operation, if the set is not
responding(is not operational) or if the set is not a M3900 set, flash
download fails.
• If the firmware file(s)used as the source for flash download to M3900
sets are notp resent (in the proper location) on the Meridian 1 system
disks, the flash download operation fails.
• While a system-wideflash download operation is in progress, attempts
todisable sets that are currently being downloadedresult in an SCH 1958
messagethat is printed with the list of sets involved. If a loop, shelf, or
cardth at contains the sets being downloaded is disabled, then the
downloadto the s ets on that loop, shelf,or card fails.
• According to the existing PSWV logic, when PSWV is in progress, an
attemptto load an overlay is denied and result in an OVL0306 message.