Z02215 datasheet(39/74 Pages) ZILOG

39 / 74 page

Z02215

Single Chip Modem with Integrated Controller, Data Pump, and AFE

PS001907-0904

AT Command Set

Result Code

Format

The V command changes the format in which result codes are displayed.

All result codes are displayed as numbers.

All result codes are displayed as words (verbose form). This

value is the default value for North America.

Call

Progress

The X command controls detection of a busy signal or dial tone when the

modem is dialing. The X command also limits the result codes the modem may

return when dialing. The operation of the X command is configurable for

operation in different countries.

Neither a busy signal nor a dial tone is detected. When a

telephone line connection is made, the result code does not

indicate the telephone line data rate.

Neither a busy signal nor a dial tone is detected. When a

telephone line connection is made, the result code indicates

the telephone line data rate.

A busy signal is not detected; however, a dial tone is

detected. When a telephone line connection is made, the

result code indicates the telephone line data rate.

Busy signal is detected; however, a dial tone is not

detected. When a telephone line connection is made, the

result code indicates the telephone line data rate.

Both a busy signal and a dial tone are detected. When a

telephone line connection is made, the result code indicates

the telephone line data rate. This value is the default value

in North America.

The @ and W dial modifiers are not affected by the X command. The @ dial

modifier may return the result codes 8 (NO ANSWER) or 7 (BUSY) each time it

appears in the dial string. The W dial modifier may return the result codes 6

(NO DIALTONE) or 7 (BUSY) each time it appears in the dial string.

&Z0=x

Store

Telephone

Number

The &Z0=x command saves a dialing string in the modem's nonvolatile memory

(EEPROM). The value of X may be up to 36 characters long and may contain

any dialing digits or modifiers, except the S=n modifier. Characters that are

neither dialing digits or dial modifiers are ignored and not stored. If the modem

does not feature nonvolatile memory, an ERROR result code is returned. The

command may be issued in one of three different ways:

&Z<dial string>

&Z=<dial string>

&Z0=<dial string>

Table 3. AT Command Set (Continued)

Command

Function and Description

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