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Page 264 of 504 M3900 Flash Download
553-3001-367 Standard 3.00 August 2005
downloads. However, there is no impact to call processing, since call
processing has a higher priority. Therefore, downloads take longer during
peak traffic times because the system processor is busy doing call processing
and cannot devote as much time to the M3900 downloads. There is no
difference between Large Systems and Small Systems for this.
When a system is first brought into service with M3900 telephones, there is a
significant amount of messaging that occurs to activate the telephones
through the Lamp Audit background routine. The time required to bring all
telephones into service on a system is dependent on the system configuration,
and could take several hours. Performing a Flash Download directly after the
system is brought into service adds to the message load on the system.
Therefore, it is recommended that M3900 telephone download activities not
occur in conjunction with systems being brought into service. Instead
downloads should occur 24 hours after a system is brought into service.
If a user attempts to use a telephone during a flash download, all telephone
activity is ignored.
When performing a flash download to an M3900 port that does not have a
telephone installed, or downloading to an M3900 port that has the wrong
M3900 telephone type installed, an SDL2110 error message is printed out at
the system.
During the middle of flash download operation, if the telephone is
disconnected or if the telephone fails download for any reason, the telephone
is rendered inoperable. Flash downloading must run to completion before the
telephone can be made operable.
For the manual individual download operation, if the telephone is not
responding (is not operational) or if the telephone is not a M3900 telephone,
flash download fails.
If the firmware file(s) used as the source for flash download to M3900
telephones are not present (in the proper location) on the system disks, the
flash download operation fails.
While a system-wide flash download operation is in progress, attempts to
disable telephones that are currently being downloaded result in an SCH1958
message that is printed with the list of telephones involved. If a loop, shelf, or