AN93

Table 39. Basic AT Command Set (Continued)

Command

 

 

Action

 

 

 

Selection of full or short startup procedures.

 

X

Mode

 

+PSS=X

0

The DCEs decide to use short startup procedures.

1

Forces the use of short startup procedures on next and sub-

 

sequent connections.

 

2

Forces the use of full startup procedures on next and subse-

 

quent connections.

 

 

 

 

Caller ID Type.

 

 

n

Mode

 

 

0

= After ring only

+VCDT = n

1 = Always on

 

 

2

= UK with wetting pulse

 

3

= Japan

 

 

6

= DTMF

 

 

 

 

Caller ID Enable.

 

n

Mode

 

+VCID = n

0 = Off

 

 

1

= Formatted Caller ID enabled.

 

2

= Raw data Caller ID enabled.

 

 

 

Type II Caller ID information—”+VCIDR:” will be followed by raw

+VCIDR?

Caller ID information including checksum. NO DATA will be dis-

 

played if no Type II data are available.

 

Distinctive Ring.

 

n

 

Mode

 

0,x

Disable distinctive ring

 

1,0

Enable distinctive ring. The ISOmodem will report

+VDR = n

 

 

DROF and DRON result codes only. DROF and

 

 

DRON are reported in 100 ms units.

 

1,x

Enable distinctive ring. The ISOmodem will report

 

 

 

DROF and DRON result codes as well as well as

 

 

 

a RING result code x/10 seconds after the falling

 

 

 

edge of a ring pulse. DROF and DRON are

 

 

 

reported in 100 ms units.

 

 

 

Receive Gain Selection.

 

The <gain> parameter has a range of 112-134 with 128 being the

+VGR

nominal value. This represents a range of -48 dB to 18 dB. The

default is 128 (0 dB). This command is used to control the receive

 

gain at the DTE from either the Si3000 Codec or the DAA. The

 

purpose is to adjust the DTE receive gain for the TAM voice stream

 

during idle state.

 

 

 

 

Rev. 1.3

73

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Silicon Laboratories SI2494/39 DCEs decide to use short startup procedures, = After ring only, = Off, Distinctive Ring