Equipo ATM

The switch is packaged in a 1U high 19" rack box, powered either via IEC mains inlet or at 24v from an extension box.

A switch has up to three network interface "modules", each module carrying:

8 ports 155 Mbit/s ATM over category 5 UTP, or

2 ports 622 Mbit/s ATM over fibre, or

16 ports Brunhilde ATM service over 100 Mbit/s Ethernet physical layer


Typical configurations:

16 ports 155 Mbit/s UTP + 2 uplink ports at 622 Mbit/s

32 ports 100 Mbit/s Brunhilde + 2 uplink ports at 622 Mbit/s

24 ports 155 Mbit/s UTP

48 ports 100 Mbit/s Brunhilde

On the 155 Mbit/s ATM module, the "spare" pairs in the cat5 cable are used for: passive fixed links which do not depend on the power to the box being switched on, and distribution of a "house sync" signal