The maritime access code of telephone mode in INMARSAT-A terminal for the IOR is（）.

单项选择题When you have received GA+ from the CES for the INMARSAT-A telex communication, you should immediately select（）and（）you required.

A.an CES / telex mode
B.an SES telex service
C.the service /the subscriber
D.a satellite /an ocean region

单项选择题The maritime access code for the AOR-E is（）in INMARSAT-A Telex Service.

A.581
B.582
C.583
D.584

单项选择题To establish a communication channel for the telex service in the INMARSAT-Aterminal, you should first（）.

A.establish a communication channel from the CES, via the International Telex Network to the final destination
B.set up a communication channel from your SES, via a satellite, to a CES within your ocean region
C.set up a channel directly to the addressee at the destination
D.establish a channel from your terminal , via the International Telex Network to a CES within your ocean region

单项选择题In general, there are two parts in an SES, One of these is antenna eqipment also referred to as（）.

A.BDE
B.UDE
C.AEP
D.ADE

单项选择题After successful commissioning , the（）will permit the SES access to system.

A.INMARSAT
B.IMO
C.MSC
D.CES