Thanks KFC.
Understood

So if i want to add a new DDP2 with daughter board, what DNUM and port I can use if i have the next configuration.
I really appreciate your help
DCH, TTY, Type, GRP, DNUM, PORT, MSDL,
-, 0, QSDI, 0, 0, -, -,
-, 2, QSDI, 0, 2, -, -,
-, 4, QSDI, 0, 4, -, -,
-, 5, QSDI, 0, 5, -, -,
-, 6, QSDI, 0, 6, -, -,
-, 7, QSDI, 0, 7, -, -,
-, 8, CPSI, -, 8, 0, -,
-, 9, CPSI, -, 9, 1, -,
-, 13, PTY, -, 13, 0, -,
-, 14, PTY, -, 14, 1, -,
10, -, MSDL, 0, 12, 1, 12,
11, -, MSDL, 0, 12, 3, 12,
12, -, MSDL, 2, 12, 0, 12,
13, -, MSDL, 2, 8, 0, 9,
15, -, MSDL, 2, 2, 1, 2,
16, -, MSDL, 0, 12, 2, 12,