AT&T MERLIN LEGEND Release 3.0 System Programming And Maintenance Manual page 89

Surrogate Mode Programming
Once you enter surrogate mode programming, you must follow the sequence
of procedures shown below.
At the service location, perform the following:
1.
System Erase
2. Program the Boards (except the 10OD module)
3. System Programming
4.
Backup
At
the installation site, perform the following:
1. Restore
2. Program the 10OD module
While you
are in surrogate mode, the Pass-Thru and Password options are not
available.
NOTE:
Surrogate mode is available only through the local programming port. You
cannot access surrogate features through the system programming console.
System Programming and Maintenance (SPM) 71