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XE2420-ITR

The World’s First Complete PLCC Packaged Modem

Unspecified 

XE2420 Modem Registers

S0 Answer on nth Ring: S0 sets the modem to auto- S7 Wait for Carrier after Dialing: S7 determines how

matically answer on the nth ring. Setting S0 to 0 dis-

long the modem waits for a valid carrier signal after dial-

ables automatic answer.

ing is completed.

Range: 0 to 255

Range: 1 to 255

Units

Rings

Units

Seconds

Default 0

Default 30

S1 Ring Count: S1 is a read-only register showing the S8 Comma Pause Time: S8 defines the duration of the

number of rings detected. If a ring is not detected

pause initiated by a comma in the dialing string. The

within 8 seconds, S1 is reset to zero.

pause is generally used when waiting for a second dial

Range: 0 to 255

tone.

Units

Rings

Range: 1 to 255

Default 0

Units

Seconds

Default 2

S2 Escape Character: S2 determines the ASCII escape

character. Values of 0-127 select valid ASCII escape S9 Carrier Detect Response Time: S9 establishes the

characters; values from 128 to 255 disable the escape

length of time the remote modem's carrier must be

sequence.

present to be recognized as valid.

Range: 0 to 255

Range: 1 to 255

Units

ASCII Character

Units 0.1 Seconds

Default 43 (+)

Default 6

S3 Carriage Return Character: S3 determines the

S10 Carrier Off Disconnect Delay: S10 selects how long

ASCII character to serve as a carriage return to termi-

carrier must be lost before the modem disconnects.

nate commands and modem responses.

Note: If S10 is smaller than the value of S9, the modem

Range: 0 to 127

will not automatically disconnect on loss of carrier.

Units

ASCII Character

Range: 1 to 255

Default 13 (Carriage Return)

Units 0.1 Seconds

Default 14

S4 Line Feed Character: S4 sets the ASCII character

to act as a line feed character in modem responses. S11 Tone Dialing Speed: S11 sets the duration and spacing

Range: 0 to 127

of the dialing tones. S11 does not affect the pulse dial-

Units

ASCII Character

ing rate.

Default 10 (Line Feed)

Range: 50 to 255

Units

1 Millisecond

S5 Back Space Character: S5 defines the ASCII char-

Default 95

acter used as a backspace to edit the command line.

Range:

Units

Default

0 to 127

ASCII Character

8 (Back Space)

S12 Escape Code Guard Timer: S12 sets the escape se-

quence guard timer. If characters are received before or

after the escape sequence, within the guard timer, the

S6 Dial Tone Wait Time: S6 determines how long the

modem waits for dial tone before dialing begins.

The Dial Tone Wait Time cannot be set to less than

two seconds.

Range: 2 to 255

modem aborts the escape attempt and remains in data

mode.

Range: 0 to 255

Units

0.02 Seconds

Default 50

Units

Seconds

Default 2

XECOM

(9)

XE2420

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