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AP1.1 System Overview
AP1-7
AP1.1.5 Network
Fig.AP1.1.3 shows the Inmarsat C channels and signals.
Fig. AP1.1.3 Channels and signals
NCS Common Channel
This channel is transmitted continuously (24 hours/day) by the NCS. The MES is
received the NCS common channel when not engaged in message transfer. Its main
functions are;
a. informing that the message is sent from the shore to MES.
b. informing the confirmation when MES sends the message to the shore.
c. polling
commands.
d. EGC message transmission.
e. sending the acknowledgement for inquiry of Login and logout from MES.
f. Network information transmission.
LES TDM Channel (Time Division Multiplex Channel)
This channel is used to control the lines when the message is sent from LES to MES.
Содержание Inmarsat-c
Страница 1: ...INMARSAT C MOBILE EARTH STATION Nera C Service Manual...
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Страница 28: ...2 3 Terminal unit IC 215 2 8 Fig 2 3 3 Block diagram of RF CON CPU board...
Страница 121: ...7 3 Cautions and information message 7 17 Mail Can t delivery a mail to server DHCP server not exist...
Страница 190: ...AP4 10 E Mail Client Setup AP4 28 15 Click OK Set to 5 minutes...
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