4x E1 Multiplexer
- CTC Union Technologies Co. Ltd.
E1存取多工器
Ethernet to 4E1(8E1) Multiplexer
- CTC Union Technologies Co. Ltd.
Single V.35 Port E1 CSU/DSU
- CTC Union Technologies Co. Ltd.
1U, E1 Multi–Service Multiplexer
- CTC Union Technologies Co. Ltd.
ERM-Mux/Plus-E1 Voice/Data Access slide-in card, ERM-Mux/Plus-Slide-in cards
- CTC Union Technologies Co. Ltd.