CCITT _BIS Mode AP protocol 2
This protocol is CCITT V.22bis. It requires the special cable A1703-63006 which is just like
the 92219Q cable with the exception that pin 9 on the computer end is routed to pin 12 (RS)
rather than pin 22 CRI). DTR
is
raised whenever a connection is allowed. RTS follows DSR. A
connection is established when DSR is high. CTS can drop for an indefinite amount of time
without dropping the connection. The card will not send data to the modem when CTS is
low. DCD can drop for up to 400ms before the connection is dropped. Once the connection
is dropped, DSR, DCD and CTS must all go low before a new connection can be made. RS
controls what speed the card sends to the modem. If RS is high, the programmed baud rate is
used. If RS is low, half of the programmed baud rate is used. If you use the 92219Q cable, the
baud rate will most certainly be half the programmed baud rate, since
RI
will almost always
be down. FS can be programmed to either state via the
CA
command.
Modem Settings (HP Predictive Support)
The
HP Predictive Support User's Guide for HP 3000 Series 900 (pin
50779-90012) contains
additional information on HP predictive support modem settings. Table A-7 contains a quick
reference description of the modem switch settings for autodial modems connected to the
LAN jConsole port.
Note
•
Some of the settings in Table A-7 are different than those described in the
first part of the Appendix. This is true for modems connected to a DTC or
manually dialed modems. Please refer to HP Predictive Support on-line help
for proper switch settings. Also be aware that the modems listed here are not
necessarily recommended or supported as Remote Support Modems.
A-10 Remote Support Modem Configuration
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