User's Manual

3 Detailed Description
APCD-LM043-4.0 19
3.3.2 EUM
The EUM, shown in Figure 11, is a wireless modem that connects to the end-user’s computer
through an Ethernet connection. The EUM, which acts as a network bridge, receives data from
the CCU over the 900 MHz radio link, and then forwards this data to EUM internal processes
or to the end-user’s computer through the Ethernet port. In the other direction, the EUM
forwards data received from the end-user’s computer over the radio link to the CCU.
Figure 11 EUM
The EUM functional blocks are the same as those of the CCU and are illustrated in Figure 8.