Sync/Async, Switched 56 and Variable DCE, Variable DTE
6440
Sync/Async, Switched 56, Variable DTE
6430
Sync/Async, Variable DTE and DCE to 64KBPS
6420
VELOCITY SERIES DSU/CSU 1 |
6420 Sync/Async, Variable DTE and DCE to 64KBPS 6430 Sync/Async, Switched 56, Variable DTE |