z02205 ZiLOG Semiconductor, z02205 Datasheet - Page 16

• Manufacturer Part Number: z02205
• Description: Modem Controller Ideal For Low Power Consumption, Small Size Requirements
• Manufacturer: ZiLOG Semiconductor

Z02205
Modem Controller
14
Command
&HT
I
PTT Test Command
Identification
Function and Description
The &HT command causes the modem to transmit tones for PTT testing. The test tone is
generated until a character is typed on the modem’s terminal. The country configuration
may disable this command. The modem returns an
is issued.
&HT0-9
&HT10
&HT11
&HT12
&HT13
&HT14
&HT15
&HT16
&HT17
&HT18
&HT19
&HT20
&HT21
&HT22
&HT23
&HT24
&HT25
&HT26
&HT27
&HT28
&HT29
&HT30
&HT31
&HT32
&HT33
&HT34
&HT35
The I command queries the modem for information that can be used to determine the
modem’s compatibility with other software and to ensure the modem is operating
properly.
I0
I1
I2
I3
I4
Table 2. AT Command Set (Continued)
DTMF tone for digit n where the command was &HTn.
DTMF tone"*"
DTMF tone "#"
DTMF tone "A"
DTMF tone "B"
DTMF tone "C"
DTMF tone "D"
V.21 channel 1 mark
V.21 channel 2 marks
V.23 1200bps marks
V.23 75bps marks
V.21 channel 1 spaces
V.21 channel 2 spaces
V.23 1200bps spaces
V.23 75bps spaces
V.22 originate mode
V.22 answer mode
V.22bis originate mode
V.22bis answer mode
V.25 calling tone
550Hz guard tone
1800Hz guard tone
Silence
Detect 2100 Hz answer tone
Detect all supported answer tones simultaneously
Detect dial tone
Detect call progress tones
Displays product code. The modem reports its product code to the terminal.
The modem produces information text dependent upon its features and
capabilities.
Displays ROM checksum. The modem reports the value of its ROM
checksum. The decimal number displayed is the eight bit sum (from 0 to
255) of all the bytes in ROM.
Tests the ROM checksum. The modem checks its ROM to ensure it is
correct. The modem reports a result code indicating whether the ROM is
OK or in ERROR.
Displays Software Versions. The modem reports the modem controller and
data pump software versions, and the modem controller software release
date, to the terminal.
Displays Modem Identification. The modem reports a configured
identification message to the terminal.
ERROR result if this command
PS001000-MOD0599
ZiLOG