Paradyne 3800 - Manual (Page 83)

A. Troubleshooting
A-5 3830-A2-GB91-20 November 1996
Table A-3
(2 of 4)
Modem – VF Connection
Symptom Action
Modem goes off-hook,
answers, but does not
connect (continued) Verify that originating modem supports your
modem’s modulation schemes. The 3830
modem recognizes V.32
terbo, CCITT V.32 bis,
V.32, V.22 bis, 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.25 bis Async,V.25 bis Bisync, or
V.25 bis HDLC.
Modem does not go
off-hook and begin
dialing If using AT Dialing, refer to the Table A-2,
Modem — DTE Connection.
g
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.25 bis 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.25 bis 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.