Section Four

@Causes the modem to listen for 5 seconds of silence. If a 5 second silence has not been detected within the period specified in S7 (default = 30 seconds), the modem disconnects and returns the NO ANSWER result code. If it detects a busy signal, it returns a BUSY result code. If the 5 seconds of silence is detected, then the modem continues dialling the dial string.

WWait For Dial Tone Before Dialling. Causes the modem to wait for a dial tone up to the period of time specified in register S7 (default = 30 seconds) before dialling the numbers that follow. If the modem detects a dial tone before the given time delay, it continues to dial. Otherwise, it goes on-hook.

,Pause During Dial. Inserted between digits in a dial string. Causes the modem to pause for the value given by register S8 (default = 2 seconds), before dialling the next digit. This delay can be used in place of the "Wait For Dial Tone Before Dialling", but is not as sophisticated.

;Return To Command Mode After Dialling. Added to the end of a dial string. Causes the modem to remain in the command mode after it dials the digits proceeding the command. This allows the user to issue additional dial commands or dial strings without overflowing the command buffer. The modem looks for the carrier after the final dial command is issued. The Command ATHn aborts this command.

^Turn On Calling Tone. Turns on the periodic 1300 Hz calling tone if originating the call. Calling tone is enabled only on a call-by-call basis.

S=n Dial Stored Number. Follows the dial command string. Causes the modem to dial a telephone number previously stored in directory location n using &Zn command.

If ATD is entered without parameters, the modem goes off-hook and waits for a carrier; if the handshake is not completed within the specified time by register S7 (default = 30 seconds), the modem goes on-hook.

The Dial command will be aborted in progress upon receipt of any character before completion of the handshake.

Examples

ATDT1-800-555-1212 Dial long distance number

ATDT9,555-4444

Inserted pause

ATDS=2

Dial stored number

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Trumpcard 14400/28800 Modem

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Ositech comm Trumpcard Data/Fax Modem manual ATDS=2