ermis
DESCRIPTION
projectTRANSCRIPT
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() , , . , , .
(backbone network) . ' , . , , .
1:
(LOS: Line of sight) , .
-
, , , .
, , :
. (TRUNK NODES) . . , , .
. (ACCESS NODES) . .
. (LOOP GROUP, REMOTE SUBSCRIBERS) .
. (RR) , ' .
Scania P - 113HK, , . , . , , (bulk encryption) 2 Mbps.
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2: SCANIA (' )
(administrators), (switch). :
. (Hot Line) , , .
. (Precedence and Pre-emption) , .
. (Camp-on-Busy)
, , (camp-on-busy).
. (Call Transfer)
H , .
-
. (Conference) ' - .
. (Call Hold)
, .
. (Abbreviated Dialing) .
: .
, .
.
, :
(SEP: System Executive and Planning). .
(OSC: Operating System Control). OSC () SEP.
(FC: Facility Control). ,
-
. OSC ( ) .
' , , ( ) , .
3: UNIMOC ( )
:
, .
(SEP, OSC) .
- , .
-
( 2Mb/s).
(Single Channel Radio Access), , . :
o (RAP), , .
o (MST), 30 (RAP).
( ), , .
SCRA SCRA (Single Channel Radio Access). SCRA , , , ( ) , . SCRA , ( ) , MSTs. SCRA , :
- .
SCRA .
-
4: SCRA
- .
SCRA , , , .
5: RAP
, , RAP (),
-
, .
SCRA
(MST: Mobile Subscriber Terminal). MST , MST's . RAP (Radio Access Point) . RAP () . () RAP 15-40 , .
6: Control Terminal MST /S 290 GD
SCRA :
. MST's RAP, RAP.
( ). MST's RAP, , . RAP , .
. . MST's RAP's RAP. , MST
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, .
. (TRUNK NODES). (ACCESS NODES). (LOOP GROUP, REMOTE SUBSCRIBERS). (RR)
. (Hot Line). (Precedence and Pre-emption). (Conference). (Abbreviated Dialing)
:,
' SCRA