| SDH - generßtor / analyzßtor STM-1 / STM-4 |
| ElektrickΘ i optickΘ rozhranφ - short / long kaul |
| PDH interface ( 2, 8, 34 Mbit/s) |
| BERT v systΘmech SDH i PDH |
| Kombinovan² SDH / PDH monitor a generßtor |
| MUX / DEMUX - PDH / SDH |
| Kompletnφ p°φstup ke vÜem bit∙m zßhlavφ vΦetn∞ selektivnφ zßt∞₧e chybovostφ |
| Add / Drop |