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JapiInvincible

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Problem installing external modem in Linux RedHat 8.0

Hi people!

I have some queries regarding my system. Please humor me:

1. I have a Motorola sm56 spakerphone modem. For it, i have an RPM available which was designed for RH 7.1 (driver version 5.1). But it doesn't work under RH 8.0. Help. So apparently i can't make this 'WinModem' work with Linux. Or can i?

2. I was thinking of buying a second hand external modem to use it under Linux (RH8). I was getting one (Creative ModemBlaster DE5625 External Modem). But i read on the Net somewhere that Rockwell/Conexent chip modems don't work with linux. And apparently this one has a Rockwell/Conexent chipset. So apparently this also wouldn't work under Linux. BUT, i had heard that ANY External modem could work under Linux. So, whats the catch? Will this DE5625 work with Linux or not?

3. Nowadays, these so called USB modems are raising a lot of hue & cry. Do THESE work ubder Linux, & what are their pros & cons vis-a-vis normal serial ones?

4. Tell me what to do. If i can make my internal modem sm56 motorola to work, well & good. If not, tell me what to look out for in an external modem if i have to buy one for linux. I'm not concerned with windows. sm56 goes like a breeze under Windows. I'm just longing to connect under Linux.

5. I borrowed a friend's external modem - GVC 56k speakerphone SF-1156V/R21 - to test it, whether it would work under Linux. But Linux doesn't even detect it. And i can't find any Linux drivers for it. How to install it?
As said in the RedHat documentation, i added the network device as a generic modem on /dev/ttyS0 (COM1), but when i try to query the modem or try to use kppp, it says, searching for modem, & then says mdem is busy!
I used the setserial command, but it doesn't even know what UART it uses. Just the Port no. Com1, & IRQ. Rest all i'm supposed to enter myself?
I mean, how does one install a simple external modem under Linux?

Enough questions, i think for a day. Please enlighten me some!
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rid
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Winmodems are mostly a PITA (my opinion) in any O/S. Most internal modems will cause bizarre problems....

Generally, an external modem doesn't need to be "installed". If it is Hayes-compatible (most are, I think), what is needed is a proper initialization string to be
sent to the modem when you are about to use it. If the modem is listed in your Linux installation, I suppose it will suffice to highlight the correct modell in
a list of modems, otherwise you may have to read the documentation for the modem and enter the initialization string while you are doing the modem setup.

I'm not sure Linux will probe for modems that sit on a serial port - from inside it may look just like a serial port... I suppose you could use minicom to talk
to the modem once it is hooked up. The modem documentation should tell you what you need to know about AT commands and such.

Regards
/RID
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JapiInvincible

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Hi 'rid',
   Thanks for the reply, but could you enlighten me a bit more?
   Okay, i drop an internal modem out of the scheme of things, but tell me:
1. What to look out for in a serial modem, i.e. what to pick & what to avoid!
2. What are these USB modems, & how do they compare vis-a-vis external serial ones.
   Waiting for the light at the end of the tunnel! :-)

Japi
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rid
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USB modems are much better then serial modems..much easier to configure and they obiously exchange data at a faster rate.
Ehm... the data rate is mostly depending on phone line quality... the serial port can feed the modem with data much faster than it can be sent on the line in most
cases. USB modems need drivers, which may or may not exist for non-MS operating systems.
/RID
Hi there,
   Well, thanks for your answer, 'rid'. It RID me of some of my doubts! :-)
Nice to hear...:)
/RID
Nice to be 'rid' of...

:-)

Japi