Nortel Meridian 1 Manual page 383

7-8 SL-1 XT system upgrade
Table 7-2
Database conversion requirements, XT system upgrade to X11 release 21 (Part 3 of 3)
X11 release
ROM card
From To
For converting a release 19 or 20 customer database
(Use conversion procedure beginning on page 7-66)
19,20 21
Note: Use the latest software release (e.g., 15.xx) acquired from your Northern Telecom representative. If
a specific issue is indicated (e.g., 15.53 and 15.57), it must be used.
553-3001-250 Standard 14.00 August 1996
required
NTND08 Release 21.xx XT system software disk and data cartridge
Software required (see note)