The board on the left was produced by Elik-tronics for a broadband fixed wireless
access system. It consists of an ATM Layer (S/UNI ALTLASPMC Sierra) and S/UNI VERTEX
chip set from PMC Sierra – the processor is POWERQUICC MPC8260 (Motorola).
The card provides ATM traffic policing (S/UNI-ATLAS),
ATM cell traffic management (S/UNI-APEX) and ATM cell multiplexing.
The CEM communicates with the other line cards (designed by Elik-tronics as well)
via the serial LVDS lines using the PMC protocol (S/UNI-VORTEX and S/UNI-DUPLEX).
On the network side, the card interfaces via two optical transceivers-2x STM1/OC3c interfaces.