Z02215 Datasheet, PDF (40/74 Pages) Zilog, Inc. – Single Chip Modem with Integrated Controller, Data Pump, and Analog Front End

Z02215
Single Chip Modem with Integrated Controller, Data Pump, and AFE
34
Dial Modifiers
Dial modifiers perform special functions within a dial command.
Example: ATDT9W1552368!@#71234;<CR>
In this example, the modem is instructed to use tone dialing
• (T), to access a number outside a PBX
• (9), to wait for dial tone
• (W), to dial the number 1552368
• To do a hook-flash (for example, timed break recall)
• To wait for quiet answer
• To issue the PBX transfer code #7 before dialing extension number 1234.
After these instructions are executed, the modem returns to the COMMAND state
before initiating the handshake.
.
Table 4. Dial Modifiers
Modifier
Function
0–9 A B C D # * Dialing digits and characters. The digits and characters 0-9 A B C D # * specify the
numbers the modem dials. The characters A B C D # * apply only to tone dialing. The
characters are ignored for pulse dialing. The characters A, B, C, and D may be disabled
in countries prohibiting their use.
P
Pulse dialing. P selects the PULSE method of dialing. This command may be issued
within a dial command or as a separate command. The default method of dialing is
PULSE.
R
Originate a call in ANSWER mode. R causes the modem to handshake in ANSWER
mode so it can originate a call to an originate-only modem.
S=n
Dial a stored telephone number. The equals command S=0 instructs the modem to
dial a stored telephone number if the modem has nonvolatile memory (EEPROM) to
store country parameters. Stored numbers may contain any dial digits or modifiers.
Telephone numbers may be stored using the &Z command. If the modem does not
feature nonvolatile memory (EEPROM) and the S command is issued, an ERROR result
code is returned.
T
Tone dialing. T selects the TONE method of dialing. T can be issued within a DIAL
command or as a separate command. The default method of dialing is PULSE.
W
Wait for dial tone. W causes the modem to wait for a dial tone before proceeding. If no
dial tone is detected, the modem hangs up the telephone line and returns the NO
DIALTONE result code.
,
Delay processing of next character. A comma (,) causes the modem to pause for the
length of time in S-register S8 before processing the next character in a dial string.
PS001907-0904
Dial Modifiers