Texas Instruments 990 User Manual page 57

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946289-9701
Examples:
COMMAND:
ANS
4.5.2.2 Call Command (CALL). Use the CALL command to establish connection on a
communication link by placing a telephone call.
General format:
Condensed format:
COMMAND: CALL COMMAND: CALL*1elephone number•
NUMBER: 1elephone number
Notes:
The NUMBER: prompt is issued only if the Emulator is configured for an Automatic Call Unit
(ACU).
A null response (return) to the NUMBER: prompt specifies manual dialing, even though an
ACU has been configured in the Emulator, or specifies that the communication link is a leased
line where dialing is not required.
The equal sign character (=) in a telephone number indicates a wait for an intermediate dial
tone (tandem dialing). There may be multiple intermediate dial tones in a telephone number.
Neither Bell modems nor the external ACU allow a wait for an intermediate dial tone.
lmbedded dashes (-) are allowed in a telephone num.ber for operator readability and are ignored
by the Emulator.
J;nbedded blanks are not allowed
'in
a
tel~phone
number.
The maximum length of a telephone number is 80 characters (the maximum length of an
operator command input record).
The asterisk
(*)
and pound sign
(#)
are not allowed in the telephone number. The functions of
the asterisk and pound sign may be accessed by inputting, in place of the asterisk, any ASCII
character whose last four bits are 1010 (such as : or Z), and in place of the pound sign, any
ASCII character whose last four bits are
1011
(such as+). These characters may only be used
with tone dialing and may be incompatible with some modems.
Examples:
The following example shows a CALL command issued on .a system equipped with an ACU.
General format: Condensed format:
COMMAND:
CALL
COMMAND: CALL*258-J077*
NUMBER:
258-1077
The following example shows a CALL command issued on a system equipped with an ACU. The
number is dialed manually or the communication line is a leased line that does not require dialing.
General format:
COMMAND:
CALL
NUMBER: re1urn
Condensed format:
COMMAND: CALL*
4-19
Digital Systems Group