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An outgoing V.120 call may be made using the “ATD” command
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You can initiate a DUN session to
establish a dial-up PPP connection.
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An outgoing X.25 call may be made using the “ATD” command
followed by the X.28 CALL
command.
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An outgoing TPAD (Transaction PAD) call may be made by using the TPAD “a” (address) command
followed by the appropriate NUA (this is normally only carried out under software control).
Similarly, incoming calls will be handled according to which protocols have been bound to the ASY
ports and whether or not answering is enabled for each protocol.
