Z02205 Datasheet, PDF(16/30 Page) Zilog, Inc. – MODEM CONTROLLER IDEAL FOR LOW POWER CONSUMPTION, SMALL SIZE REQUIREMENTS

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Z02205 Datasheet, PDF (16/30 Pages) Zilog, Inc. – MODEM CONTROLLER IDEAL FOR LOW POWER CONSUMPTION, SMALL SIZE REQUIREMENTS

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Z02205

Modem Controller

Command

&HT

PTT Test Command

Identification

ZiLOG

Table 2. AT Command Set (Continued)

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 modemâs terminal. The country configuration

may disable this command. The modem returns an ERROR result if this command

is issued.

&HT0-9 DTMF tone for digit n where the command was &HTn.

&HT10 DTMF tone"*"

&HT11 DTMF tone "#"

&HT12 DTMF tone "A"

&HT13

&HT14

&HT15

&HT16

&HT17

DTMF tone "B"

DTMF tone "C"

DTMF tone "D"

V.21 channel 1 mark

V.21 channel 2 marks

&HT18 V.23 1200bps marks

&HT19 V.23 75bps marks

&HT20 V.21 channel 1 spaces

&HT21

&HT22

&HT23

&HT24

&HT25

&HT26

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

&HT27 V.22bis answer mode

&HT28 V.25 calling tone

&HT29 550Hz guard tone

&HT30

&HT31

&HT32

&HT33

&HT34

&HT35

1800Hz guard tone

Silence

Detect 2100 Hz answer tone

Detect all supported answer tones simultaneously

Detect dial tone

Detect call progress tones

The I command queries the modem for information that can be used to determine the

modemâs compatibility with other software and to ensure the modem is operating

properly.

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.

PS001000-MOD0599

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