Z0221500ZCO Zilog, Z0221500ZCO Datasheet - Page 60

• Manufacturer Part Number: Z0221500ZCO
• Description: Z02215 ONE-CHIP MODEM EVAL KIT
• Manufacturer: Zilog

Specifications of Z0221500ZCO

• Main Purpose: Telecom, Modem
• Utilized Ic / Part: Z02215
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Secondary Attributes: -
• Embedded: -
• Primary Attributes: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Modifier T
0–9 A B C D # * Dialing digits and characters. The digits and characters 0 - 9 A B C D # *
P
R
S=n
T
W
,
@
!
Using The AT Command Set
Effect Tone
specify the numbers the modem dials. The characters A B C D # * apply only to
TONE dialing. These characters are ignored for PULSE dialing. The characters
A, B, C, and D may be disabled in countries prohibiting their use.
Pulse dialing. P selects the PULSE method of dialing. P may be issued within a
D command or as a separate command. The default method of dialing is PULSE.
Originate a Call in Answer Mode. R selects ANSWER mode for the modem
handshake so the modem may originate a call to an originate-only modem.
Dial a Stored Telephone Number. When S=0 (or S ) is issued, the modem dials
a stored telephone number if the modem has nonvolatile memory (EEPROM) to
store country parameters. The stored numbers may contain any dial digits or
modifiers. Telephone numbers may be stored using the &Z command. If the
modem does not have nonvolatile memory (EEPROM) and this command is
issued, an ERROR result code is returned.
Tone dialing. T selects the TONE method of dialing. T may be issued within a D
command or as a separate command. The default method of dialing is PULSE.
Wait for dial tone. The modem waits 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 (,) results in pause for the length
of time specified in S-register S8 before the modem processes the next character
in a dial string.
Wait for Quiet Answer. A @ modifier sets the requirement that a period of
continuous silence be detected within a specified amount of time. The default
period of continuous silence is 5 seconds but may be set in a counting profile.
The period of time within which the continuous silence must be detected is spec-
ified in S-register S7 .
Timed Break Recall (Hookflash). The ! modifier instructs the modem to hang
up the telephone line for the length of time in S-register S29 , then take the tele-
phone line OFF-HOOK again. This command is frequently used to access a
PBX’s call transfer function.
Table 2. Dial Modifiers
PRELIMINARY
Evaluation Board User Manual
Z02215 Single-Chip Modem
UM002304-0802
54