perry is right it could be a supervision problem,
And on your FSUM print there is a problem in that you are behind in the firmware on the 3903 sets
Your current software 25.30 expects that your 3903's run the firmware thats on your disk-looks like you may have upgraded system to 25.30 and never upgraded your firmware on the phones -in ld 22 , REQ PRT,TYPE PWSV, AND LOOK FOR 3903, IT SHOULD SAY 52.
**M3903 SUMMARY
052 - ON DISK---THIS IS THE FIRMWARE ON YOUR DISK
036 (017 ) - 000114 SETS FOUND
((36 IS THE FIRMWARE ON YOUR 3903'S))
000005 SETS NOT RESPONDING
REFER TO COMMANDS LD 32 MAINT IN NTP'S OR 3900 SET INSTALLATION FOR CAMMANDS FOR FLASH DOWNLOAD TO UPDATE FIRMWARE ON SETS
WOULD RECOMEND GETTING HELP FROM YOUR TECH SUPPORT OR NORTEL
YOU CAN ALSO DO A KEYWORD SEACH IN THIS FORUM FOR THIS SUBJECT AND DOCUMENT LINKS IF YOU HAVE NONE
GOODLUCK