Configuration of MultiTec ZDXe Modem

[Mohammad Kaleem]

Hi,

I am trying to install a MultiTech 56K Data/Fax Modem on HP9000 (K420 and D3XXX) Machines with HP-UX 10.20 and 11.00 for dialin. It is connecting but giving garbage and disconnecting within 30 seconds with error message "Disconnected:Remote party disconnected". Any help would be highly appreciated.

I have already performed all the following steps.
CM> ca
CA>External Modem
CA>Protocol CCITT
CA>Baudrate 9600

- Configured the driver in SAM

I am using the following cable:

CPU Modem
1 1
2 3
3 2
4 8
6 20
7 7
8 4
9 22
20 6
22 5

Following settings are on modem.

B1 E1 L1 M1 N1 Q0 T V1 W0 X0 Y0 &C1 &D3 &G@ &J0 &K0 &Q1 &R1 &S0 &T5 &X0 &Y0 S00:001 S01:000 S02:043 S03:013 S04:010 S05:008 S06:003 S07:055 S08:002 S09:006 S1-:014 S11:095 S12:050 S18:000 S25:005 S26:001 S36:007 S38:020 S46:136 S48:007 S95:000

Best regards,

Kaleem

[Darren Prior · Accepted solution]

Hi Kaleem,

Firstly I would choose Bell protocol rather than CCITT unless it is essential to your needs. Very few people use CCITT, and it does complicate troubleshooting with its timing issues! Also the external modem port should be set to 19200 baud.

Here's a modem setup string which I've used on MT5600ZDX modems on K class servers:

AT&F0&D3&K5$SB19200&W0

and what it means:

&F0 reset to factory defaults
&D3 reset modem when DTR dropped
&K5 enable transparent XON/XOFF flow control
$SBxxxx serial port speed (server <-> modem)
&W0 store settings in non-volatile RAM

You may also need to change your gettydefs entry too; can you post your line in inittab and also the gettydefs entry.

regards,

Darren

[Mohammad Kaleem]

Hi Darren,

Thanks lot for your help. Its working properly now.

Regards,

Kaleem

[Mohammad Kaleem]

Hi Darren,

I have an other Multitech Modem (V.90 Data/Fax) Model MT5634ZBA. I can connect to this moden remotly but nothing is appearing on the screen. While I am using "send break" key in my terminal emulation screen I am getting "login" prompt.

Do you have any idea how to enable or disbale "Break" function on this modem or some thing else I need to change?

Thank you,

Kaleem

[Darren Prior]

Hi Kaleem,

The MT5634ZBA has a fairly different config to the ZDX, it uses country codes to define different parameters. There are also different firmware revisions depending whether it was supplied by HP for use as a remote access modem or bought from another supplier.

What type of server is this connected to, what type of port (GSP, console, mux, etc), and what inittab entry is being used?

If you are using the modem with remote console access on a D or K class then it is normal to have to send a break sequence to gain control of the console.

regards,

Darren.

[Mohammad Kaleem]

Hi Darren,

Thank you for your quick response. We bought this modem from other supplier not from HP to access system remotely. Yes I am trying configure this modem on D or K class servers. I am using mux port and the entry in the Inittanb tab is as follow.

a0:3:respawn:/usr/lbin/uucp/uugetty -r -t 60 -h ttyd0p7 19200

Regards,

Kaleem

[Darren Prior]

Hi Kaleem,

On a K class that port on the Modem Distribution Panel (MDP) is the remote console. You've got a couple of choices; either disable remote console access, or move the modem to another port, remembering that ports 0,1,7 are reserved on this MDP.

regards,

Darren.

[Mohammad Kaleem]

Hi Darren,

No worry, I could connect in the same port using same entry in the inittab. I just used "\K5" to send break in the modem setup and its connected well.

Appreciated and thanks for you help.

Cheers,

Kaleem

[Patel_3]

I have a multitech MT5600ZDX on a HP11 C3000.
My connect from my PC works first time , the second time It connect I do not get a login.
The HP box also will not let me connect to the port , cu -s19200 -lcul0p0 dir until I switch the modem on /off.

I have used a known working modem and still get the same problem , I have tried the strings suggested.

Do I need a patch ?, the modem is not from HP so could teh firmware be the problem.

And finally , Please suggest a modem that should work with HP 11 .

[Darren Prior]

Hi,

It's better to start a new thread with a new question, including a link to this one. That way you are able to award points to people that help you, and the solution to the headline question is more easily seen.

Having said that I would suggest you check your device files using lssf, it sounds as if you may be using CCITT device files.

regards,

Darren.