Paradyne 3830 manual Modem Ð DTE Connection

Models: 3830

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A. Troubleshooting

 

 

Table A-3

 

 

(2 of 4)

 

Modem ± VF Connection

 

 

 

Symptom

 

Action

 

 

 

Modem goes off-hook,

 

Verify that originating modem supports your

answers, but does not

 

modem's modulation schemes. The 3830

connect (continued)

 

modem recognizes V.32terbo, CCITT V.32bis,

 

 

V.32, V.22bis, V.22, V.21, Bell 212A, and Bell

 

 

103J. The 3800 Series modem does not

 

 

support other vendors' proprietary modulation

 

 

schemes.

 

 

Use the S41 register to force your modem to

 

 

operate at the same modulation scheme as

 

 

the originating modem.

 

 

 

Originate Mode

 

Verify that the modem's DTE Dialer

 

 

configuration option is set to the correct

 

 

setting: either AT, DTR Dialing,

 

 

V.25bis Async, V.25bis Bisync, or

 

 

V.25bis HDLC.

 

 

 

Modem does not go

 

If using AT Dialing, refer to the Table A-2,

off-hook and begin

 

Modem Ð DTE Connection .

dialing

 

If using DTR Dialing, verify the telephone

 

 

 

 

number stored in directory location 1, and

 

 

verify that the DTE is raising DTR from Off to

 

 

ON to initiate a dial.

 

 

If using V.25bis Async, verify that the correct

 

 

 

 

character format is set to 7 data bits with even

 

 

parity and 1 stop bit, and the carriage return

 

 

and line feed are used as command

 

 

terminators.

 

 

If using V.25bis Bisync, verify that the correct

 

 

 

 

character format uses two synchronous control

 

 

characters and a start-of-text control character

 

 

before the text block and an end-of-text control

 

 

character after the text block.

 

 

 

3830-A2-GB91-30

August 1998

A-5

Page 91
Image 91
Paradyne 3830 manual Modem Ð DTE Connection