Comtech EF Data CIM-550, Installation And Operation Manual

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CiM-550 IP Enabled Satellite Modem Rev. 2
SNMP interface CD/CIM550.IOM
213
The system services provided by the cim550 in the OSI network model are:
∑
2
L-1
where L is the network layer support by the cim550.
In the cim550, this is calculated by 2
1-1
(layer 1) + 2
2-1
(layer 2) + 2
3-1
(layer 3) + 2
4-1
(layer 4) + 2
7-1
(layer 7) = 1 + 2 + 4 + 8 + 64 = 79.
Table 13-3. System Services
Network Layer Description
Layer 1 Physical
Layer 2 Datalink
Layer 3 Internet
Layer 4 End-to-end
Layer 7 Applications