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GAP/SVR4 Dial-in Modem Configuration GAP/SVR4 Dial-in Modem Configuration
Dial-in Modem Configuration requires familiarity with both the specific OS
and the specific modem being used. While the following procedure is
sufficient for most cases, it may be necessary to take additional steps to
properly configure your modem or to set up the OS for a specific
application.
1) The Cable
Use the Standard Modem Cable as diagrammed in the
Digi Standard Cable section.
2) The UnixWare Server:
scoadmin
--> hardware --> serial manager --> view --> boards
Select Digi product from the list
--> view -->ports
Select port from the list
Modify Terminal Port for proper parameters
--> port --> modify
Note: Modems usually use
- (a01m) Modem
- Incoming and outgoing
- A fixed baud rate (38400)
- Advance options allow changes to character bits and stop bits
In /usr/lib/uucp/Devices, the modem entry look like
this:
Direct term/a01m,M - 38400 direct_modem
Note: An ACU line may be necessary for correct operation of the modem
in dialout applications. Refer to your modem manual or to the modem
manufacturer for the correct modem initialization string to use for your
modem. Refer to the SCO Administration handbook for guidance on setting up
an appropriate ACU entry that uses this initialization string.
Connect and configure the modem:
cu -l /dev/term/a01m -s 38400 [may need to use a01s instead]
at&w [train modem to port speed]
~. [ tilde period, to end cu ]
[depending on the modem it may be necessary to
do ats0=1&w to enable auto-answer]
Carrier Detect
If the port is wired with 8 wire cable, put the command:
ditty altpin /dev/term/a01s in the /etc/rc2.d/S99digi file.
Possible error messages when attempting cu to the modem:
- SYSTEM NOT IN Systems FILE: missing or incorrect entry in /etc/uucp/Systems
- NO DEVICES AVAILABLE: missing or incorrect entry in /etc/uucp/Devices
- CAN'T ACCESS DEVICE: owner or permissions incorrect on /dev/term/a01s
- DEVICE LOCKED: remove /usr/spool/uucp/LCK..tty[whatever]
this can be caused by the lack of an ACU entry in the Devices file
- DIALER [whatever] -- the ACU entry in /etc/uucp/Devices is incorrect,
refer to the modem and system operators manuals
*In Unixware/SVR4, the modem control device is for dial-in, the standard device
is for dial-out and configuration:
| Device | Dialin | Dialout/Printer/Terminal
|
|---|
xem, c/x, epc/x
and portserver | term/a01m | term/a01s
| | xe and xi | term/i1A | term/i1a
| | xr | term/r1A | term/r1a |
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