You have to put the setting in the middle of the 46xxsettings file... I added mine here, and it seems to work.
############################################################
## ##
## 96xx and 16cc SETTINGS ##
## Settings applicable to 96xx and 16cc telephone models ##
## ##
############################################################
##
## Voice Mail Telephone Number
## Specifies the telephone number to be dialed
## automatically when the telephone user presses the
## Messaging button. The specified number is used to
## connect to the user’s Voice Mail system.
##
## Note:
## This parameter setting is ignored for extensions
## configured as 96xx station types on the call server.
##
SET MSGNUM 5555555555
##
## English Language Selection Status
## Specifies whether built-in English language text strings
## are selectable by the user. 0 for off, 1 for on.
SET LANG0STAT 1
##
################ AVAYA VPN SETTINGS #############################
SET NVVPNMODE 1
SET NVVPNCFGPROF 2
SET NVIKECONFIGMODE 1
SET NVIKEXCHGMODE 1
SET NVSGIP x.x.x.x
SET VPNPROC 2
SET VPNCODE ""
SET TRUSTCERTS xxxxxxx
################ AVAYA SCREEN SAVER SETTINGS ###################
##
## Idle time before the Avaya Screen Saver is activated (minutes).
## Number of minutes without phone activity to wait
## before the screen saver is activated. A value of 0 means
## the screen saver is never activated. The default is 240 minutes.
## This parameter does not apply to 16cc SIP phones.
##
## Note:
## This setting activates the Avaya Screen Saver which is
## different than the "idle screen" accessed by WMLIDLEURI.
## While it is possible to use WMLIDLEURI as an "idle
## screen", it is recommended that the SCREENSAVERON
## timer and the Avaya Screen Saver display be used for
## screen saver purposes.
## The available range is 0-999.
##
SET SCREENSAVERON 30
##
## The filename of a valid JPEG customized screen saver image.
## 0-32 ASCII characters.
## Note: This parameter is supported on H.323 and Its not been
## supported for SIP 96XX Releases of telephones
##
SET SCREENSAVER logo.jpg
Thanks,
98C
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