Domaći
| razine | level | |
| razine | levels | |
| razine 1-3 sustava signalizacije 7 | message transfer part | |
| razine evidencija i informacija | levels of register and information | |
| razine protokola | protocol layers |
| razine | level | |
| razine | levels | |
| razine 1-3 sustava signalizacije 7 | message transfer part | |
| razine evidencija i informacija | levels of register and information | |
| razine protokola | protocol layers |