Dial-in modem K-Class

[brk1221]

Hi, I've set up a external Multitech modem on my hpux k570 server. When I dial into it from a remote pc using hyperterm it connectes but all I get is a blinking cursor. It seems that there is a piece missing that invokes a "Login" prompt. Any help would be appreciated.

Thanks
Tim

 

[cakecop]

Hi

I found this document. One thing I noticed, Try pressing Ctrl-B..
MODEMS
1.) INFORMATION TO GATHER:
a.) Type of modem (ie..us-robotics)(K or D class int/ext)
b.) Port, modem is on (ie..mux port 3 -> ttyd0p3)
c.) Modem Cable (800's use 40233A or 92219Q)
(700's use 24542M or Standard pc cable)
NOTEclass uses 700 cable for 9pin built-in serial connection
d.) What is the modem used for (ie..dial-in, dial-out)

2.) SETTING UP MODEM FOR DIAL-IN AND/OR DIAL-OUT:
a.)Use sam to configure modem
(sam->Peripheral Devices->Terminals&Modems->actions->Add Modem)
NOTE: Modem device files ->(ttyd->dial-in)(cul->dial-out)
b.) Choose the Mux/Serial Card
c.) Select Port
d.) Select Speed (ie..19200) (EISA mux can support > 19200)
e.) Make sure to check (Receive In-coming Calls and/or Use
Device for Calling out)
NOTE: checking "Receive In-coming Calls" will start a getty process.

3.) TROUBLESHOOTING:
a.)Modem is not answering:
* Check for getty process (ie...ps -ef|grep 0p7)
(/usr/lbin/uucp/uugetty -r -t 60 -h ttyd0p7 19200)
* Check phone number and phone line
* Check lights on modem -> must have TR and AA lit
NOTE: Some modems don't have an AA light but have a
switch for Auto Answer
* Is this the correct port?

b.) Modem connects, but no login:
* Modem has TR forced on and no getty process is running
* Wrong mux panel, using terminal mux (DDP) need modem mux (MDP)
* Flow control on the modem must be xon/xoff (software flow control)
NOTE: Hardware flow control is default for most modems
* Remote access port is locked: from the console:
ctrl b -> to get to console mode (CM prompt)
CM>ur (unlock remote)
CM>dr (disable remote)
CM>co (exit console mode)

d.) Modem connects and responds with garbage:
* Default for dial-in is 7e1 (7 databits Even parity and 1 stop bit)
* kill the getty process for the port, it should respawn and create a new one
* Baud rate issue -> use cu or kermit to reset the modem.
NOTE: Send an ATZ and it should return an OK.
If it is HP's internal modem then send an AT&D3.

4.) TESTING:
a.) Using kermit
* kermit
* set line /dev/ttyXpY (X-> instance Y-> port)
* set flow xon/xoff
* set speed BBBBB (BBBBB -> baud rate ie..19200)
* connect
* ATZ -> this should return an OK
* ctrl\c to exit connect mode
* quit (to exit kermit)

b.) Using cu
* vi /etc/uucp/Devices
* add line -> Direct culXpY - BBBBB direct
(X -> instance Y -> port, BBBBB baud rate ie..19200)
* cu -sBBBBB -lculXpY dir
NOTE: This should come back with connected.
If it comes back with line problem,
check to see if the the device files are busy.
(ie.. fuser -u /dev/culXpY check all
devices ttyXpY, ttydXpY and cuaXpY)
* ATZ -> this should return an OK
* ~. to exit

5.) CHANGING INTERNAL to EXTERNAL MODEM (D or K class)
a.)From the console -> ctrl b
* CM> ur (unlock remote)
* CM> dr (disable remote)
* CM> ca (configuration menu)
Current terminal modem identification:HP mode terminal
Do you wish to change it?(Y[N]) N
Current remote console configuration: Internal modem
Do you wish to change it?(Y[N]) Y
Select the new configuration(0=Internal Modem,1=External Modem, 2=AUTO): 1
Current remote support modem port configuration
Bit rate: 19200 bits/sec
Protocol: Bell
System Identification: id_name (ie..mum)
Do you wish to change the configuration?(Y[N]) N
NOTE: Answer no to the last question if the configuration looks ok.

 

[brk1221]

Thanks for the useful info. I followed all above steps. I have verified the cable and modem are correct. After cycling the power on the modem, the TR light stays on for about 20 seconds and then goes out. Seems to be Unix related, not sure what to try next.
Thanks
Tim