A-5
Issue 3 April 1994
Table A-3. Modem — Telephone Line Connection (2 of 5)
Action
Symptom
CONNECTION PROBLEMS —
Dial Environments in Answer mode
Modem goes
off-hook,
answers, but
does not
connect
Verify that the modem is optioned for Automode
enable (S78=0). Verify that the originating
modem supports your modem’s modulation
schemes. The modem recognizes CCITT V.32
bis, V.32, V.22 bis, V.22, V.21, Bell 212A, Bell
103J, and V.23. Note that the modem does not
support other vendors’ proprietary modulation
schemes.
Determine the originating modem’s modulation
scheme, and then use the S41 register to force
your modem to operate at the same modulation
scheme as the originating modem.
Perform a Local Analog Loopback test (&T1)
and verify that data entered at the computer is
echoed back to the computer.
