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made before adjusting the azimuth and elevation of the antenna.
As the correct azimuth and elevation settings of the antenna are approached, the signal strength indicator will rise showing that a signal from the satellite is being received. The procedure then is to adjust the antenna manually for the best signal strength possible and let \the Ship Earth Station take over to continue tracking the satellite automatically.
1、 What will be acquired by the Inmarsat equipment before the communication via satellite? A. the satellite antenna B. the satellite signal C. the satellite code D. the satellite height
2、 The available manual means of antenna adjustment is ______________. A. alter the azimuth of the antenna B. alter the elevation of the antenna
C. alter the height and elevation of the antenna D. alter the azimuth and elevation of the antenna
3、 After inputting _________ the Ship Earth Stations are able to adjust their antennas to find the satellite automatically.
A. the ship's latitude and longitude B. the ship's speed and course C. the ship's ocean region D. the ship's MMSI
4、 When the correct azimuth and elevation settings of the antenna are approached, the signal strength indicator will ___________. A. reduce showing B. stop showing
C. begin to show D. rise showing
5、Which of the following statements is not correct according to this passage?
A. To operate any Inmarsat equipment is it essential to acquire the satellite signal
B. Inmarsat-A, B and M Ship Earth Stations use high gain parabolic dish or phased array antennas
C. A manual means of antenna adjustment is usually available by which the azimuth and elevation of the antenna can be altered to \
D.It won`t be necessary to make a correction for the actual heading of the ship since the charts are based on a heading of 000 degrees.
PASSAGE3.
General Introduction A unique problem in accounting, billing and settling of communication
charges is caused by ships of different nationalities, traveling across international waters, and communicating with other ships or countries, each with its own national currency. To deal with this problem, the maritime industry, with the advent of HF and MF radio communications, devised a special billing and settlement process. This process has proved to be suitable for application to satellite communications, and so has been adopted by Inmarsat for the maritime user.
This section explains the Inmarsat' accounting, billing and settlement process, from the ship making a call, to the shipping company receiving and settling the bill.
The billing and settlement process - ship-to-shore calls
The billing and settlement process in use today for a ship-to-shore call via the Inmarat system is as follows:
A ship making a call via the Inmarat system involves several different elements.
Depending on the nature of the call, these elements can include the satellite link to a selected CES (known as the \The CES through which the call was placed calculates the cost of using all of the elements involved, in order to find a total cost for the call. If the call involves two or more countries (The country where the CES is located and the destination country), the charge for the use of the different national landlines is based on the international \the countries involved.
The CES invoices the total cost of the call to an entity known as an \which acts as intermediary for billing and settlement between a particular ship, the owner/shipping company, and all CESs which the ship has used.
Optionally, in addition to nominating an Accounting Authority on the Commissioning Application Form, an Applicant may also nominate a \The BE must be approved by the National Routing Organization. The AA/BE may make a charge for its services.
When an SES makes a call through a CES, the CES checks its SES database to find the AA acting for the ship.
Each CES used by the ship passes the total costs for the traffic originated by that ship/ SES via that CES to the AA acting for the ship. The AA consolidates all invoices from the different CESs used by that ship over a given period.
The AA then invoices the shipping company for the total consolidated amount, and pluses any handling charge already agreed with the shipping company.
The AA pays the individual amounts due to each CES involved, and the shipping company must pay the AA.
Inmarsat separately invoices each CES directly for its use of the space segment.
1、 A ship making a call via the Inmarat system involves the several different elements, except__________. A. the selected CES B. the space segment C. TT&C D. terrestrial lines
2、 Which institution calculates the cost of using all of the elements involved, in order to find a total cost for the call?
A. The CES through which the call was placed. B. the Calling SES C. the ITU D. the Called SES
3、 The CES invoices the total cost of the call to an intermediary known as ______. A. CCIR
B. Accounting Authority C. AAIC D. ITU
4、 According to this passage, which statement is correct?
A. The shipping com-pany directly pays the individual amounts due to each CES involved. B. The AA can not make a charge for its services.
C. The BE may make a charge for its services. D. Inmarsat invoices each CES for its use of the space segment through the AA.
5、Which of the following statements is not correct according to this passage? A.A ship making a call via the Inmarat system involves several different elements.
B.The AA/BE may make a charge for its services.
C.When an SES makes a call through a CES, the CES checks its SES database to find the AA acting for the ship.
D.The AA consolidates all invoices from the exactly same CES used by that ship over a given period.
PASSAGE4.
Inmarsat 'Help-lines', which contain information about the various Inmarsat services, are available to any person, ashore or afloat, who has access to the International telephone and telex networks. The equipment that should be used to access the dial-up 'Help-line' is a Hayes compatible modem at any speed up to and including 9600 bps, a personal computer (PC) or terminal unit, and communications software with a 'Capture' mode available. Contact may be made to the modem on United Kingdom (UK) telephone line 01278 772342 (+44 1278772342 International). This service is continuous, 24 hours a day, 7 days a week. Before using the (PC) ?Help-line? ensure that the communications software has been set to 'Capture' mode. Once the modem 'Handshake' has been successfully carried out you will see a welcome message on your screen. Follow the instructions on the screen to use the system, but do not use the . (full stop) as a delimiter, use the (return) key to enter your requirements.
The ?Help-line? is also available on UK telex number 920327 INMHLP G, 24 hours a day, 7 days a week, and is available for access by anyone with a telex terminal. This means that Inmarsat-A and -C users anywhere (or ship owners, agents, etc.), can obtain up-to-date information 24 hours a day. To use the telex 'Help-line', after connection wait for the system to exchange answerbacks; you will then be welcomed to the database. Do not type any message until you have received the
welcome message. The option required should then be selected followed by . (full stop); the . (full stop) acts as the indication that you have finished your selection. The 'Help-line' services are also available on a Bulletin Board Service (BBS) using PC/Modem number +44 (0)171 728 1571. The following option facilities are available:
(1) Information retrieval - A menu-driven database that can be used to retrieve any generic information placed in the database by the Inmarsat Directorate, information on Land Earth Stations (LESs) and the services offered by Inmarsat Signatories, placed in the database by the Inmarsat Directorate on behalf of, and with the consent of, Signatories.
(2) Mailbox facility - A message system whereby callers can leave messages for action by the Inmarsat Directorate. These messages can be requests for further information, publications and requests of a non-urgent nature which can be responded to during normal working hours.
(3) Page Operator facility - Whereby callers can have a 'live' telex conversation with Inmarsat Directorate personnel.
(4) Director facility - This option gives a listing of all information available for retrieval together with the date of origination. This is to enable users to see if they have the latest updated information.
(5) Help facility - This option contains instructions on how to use the Telex 'Help-line'.
(6) Ship ID Database, Inmarsat-A - This facility contains the main and second ID numbers of all Inrnarsat-A equipped vessels. (7) Ship ID Database, Inmarsat-C - This facility contains the ID numbers of all Inmarsat-C equipped vessels.
1、 Before using the (PC) ?Help-line? ensure the communications software has been set to ___________ mode. A. ?Connect? B. ?Receive? C. ?Capture?
D. ?Tx?
2、 The number of the ‘Help-line’ telex services on UK is ___________. A. +44 (0)171 728 1571 B. 920327 INMHLP G C. 01278 772342 D. +44 1278772342
3、 Which facility is not available in ‘Help-line’ Service? A. Information retrieval B. Mailbox facility C. Store and Forward D. Help facility
4、 Which facility enable users to see if they have the latest updated information? A. Ship ID Database, Inmarsat-A B. Help facility