Nera Saturn Bm Marine Mk2, Техническое руководство

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8
Saturn Bm Mk2 Marine – Technical Manual
Saturn Bm Marine Communication
S y s t e m D e s c r i p t i o n
S y s t e m D e s c r i p t i o n S y s t e m D e s c r i p t i o n
Calls from Mobiles
To initiate a call, the user dials the international call prefix
00 prior to the telephone number for the required destina-
tion. The LES code is also included, either automatically
when using the default LES, or manually selected from the
Display Handset.
The mobile automatically includes information to identify
the MES and the particular end terminal that originates the
call. Saturn Bm has six connections: the Display Handset
and five connectors that are normally configured for tele-
phone and a telefax.
The LES uses the end terminal identifying information (OI)
for billing purposes.
The mobile transmits the dialing information on a channel
specially assigned by the NCS, to the LES, which also has
been instructed to tune to the same channel.
On receiving the call, LES routes it over the public tele-
communications networks to the intended destination.
When the destination responds, for example by the dialed
subscriber lifting the handset, the call proceeds.
The illustration of the call initiation is simplified.
PSTN
00 47 66 84 47 00
Calls from Mobiles
Forward/return ID
123456/ABCDEF
OI
1
Type
Voice
Commissioned
Yes
66 84 47 00
LES Translation Table
MES Translation Table
When the MES originates a call it starts
by sending a request to the LES.
This initial request for service contains
the MES Return ID and type of service.
Saturn Bm incorporates a configuration
table for originating information,
accessible through the “Configure Ports”
function (70). This table contains one
entry for every physical connector with
the Originating Id and type of service for
that specific connector.
LES
Return ID
Type
2
ABCDEF
Voice
Access Request
Fwd ID
Rx ch.
Tx ch.
123456
8192
12000
Channel assignment
Saturn B
T
T L NO
Connector
Service/
Originating Id
Phone/OI=1
Phone/OI=2
Fax/OI=17
Default=no OI
Default=no OI
Default=no OI
Telex/OI=49
HANDSET
TEL.1
TEL.2
TEL.3
TEL.4
TEL.5
PC
LES=2
S
Sa urn B
NERA
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