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Re: Remote machine hangs up on MPS



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On Fri, 6 Feb 1998, Raj Mathur wrote:

> Date: Fri, 6 Feb 1998 12:16:59 +0530
> From: Raj Mathur <raju@sgi.com>
> To: flexfax@sgi.com
> Subject: flexfax: Remote machine hangs up on MPS
> 
> hylafax-v4.0pl1 on an SGI O2 IRIX 6.3 GCC 2.6.3
> 
> Motorola UDS Fastalk II
> 
> Sendfax sends the first page of the fax fine, but the connection
> closes once the server sends the MPS (more pages same document)
> command.

Hmm. Multiple documents? Are all parts of your fax in the same
resolution (which might help, if there is some screwballness going
on there)?

> Feb 06 12:05:40.25: [ 2317]: MODEM set DTR OFF
> Feb 06 12:05:40.25: [ 2317]: MODEM set baud rate: 0 baud (flow control unchanged)
> Feb 06 12:05:40.25: [ 2317]: DELAY 2600 ms
> Feb 06 12:05:42.85: [ 2317]: MODEM set DTR ON
> Feb 06 12:05:42.85: [ 2317]: MODEM set baud rate: 38400 baud, input flow RTS/CTS, output flow RTS/CTS

I also seem to remember a problem with RTS/CTS under some IRIX operating
systems. Have you tried software flow control?

> Feb 06 12:05:43.94: [ 2317]: <-- [12:AT+FCLASS=2\r]
> Feb 06 12:05:44.05: [ 2317]: --> [2:OK]
> Feb 06 12:05:44.05: [ 2317]: <-- [10:AT+FTBC=0\r]
> Feb 06 12:05:44.16: [ 2317]: --> [5:ERROR]
> Feb 06 12:05:44.16: [ 2317]: MODEM Command error

Whoops! You might also try using Class 1: a lot of modems seem to have
problems in Class 2 or 2.0, and I haven't seen any simple fix posted.
Also, why is it barfing on this command?

You might run probemodem to check on this, and look in the manuals.

> Feb 06 12:05:44.16: [ 2317]: <-- [10:AT+FBOR=0\r]
> Feb 06 12:05:44.26: [ 2317]: --> [2:OK]
> Feb 06 12:05:44.26: [ 2317]: <-- [13:AT+FPHCTO=30\r]
> Feb 06 12:05:44.37: [ 2317]: --> [5:ERROR]
> Feb 06 12:05:44.37: [ 2317]: MODEM Command error

Yup, barfing again.

> Feb 06 12:06:25.39: [ 2317]: <-- data [2]
> Feb 06 12:06:25.39: [ 2317]: SEND end page
> Feb 06 12:06:34.64: [ 2317]: --> [54:^S^Q^S^Q^S^Q^S^Q^S^Q^S^Q^S^Q^S^Q^S^Q^S^Q^S^Q^S^Q^S^Q^S^Q^S^Q^S^Q^S^Q^S^Q^S^Q^S^Q^S^Q^S^Q^S^Q^S^Q^S^Q^S^Q^S^Q]
> Feb 06 12:06:34.64: [ 2317]: --> [2:OK]

Umm. Flow control barfage?

> Feb 06 12:06:34.64: [ 2317]: SEND send MPS (more pages, same document)
> Feb 06 12:06:34.64: [ 2317]: <-- [9:AT+FET=0\r]
> Feb 06 12:06:42.85: [ 2317]: --> [9:+FHNG: 53]
> Feb 06 12:06:42.85: [ 2317]: REMOTE HANGUP: Invalid response to MPS (code 53)
> Feb 06 12:06:42.85: [ 2317]: <-- [5:ATH0\r]
> Feb 06 12:06:42.85: [ 2317]: --> [2:OK]
> Feb 06 12:06:42.85: [ 2317]: MODEM set DTR OFF
> Feb 06 12:06:42.85: [ 2317]: MODEM set baud rate: 0 baud (flow control unchanged)
> Feb 06 12:06:42.87: [ 2317]: STATE CHANGE: SENDING -> MODEMWAIT (timeout 5)
> Feb 06 12:06:42.87: [ 2317]: SESSION END

And it's finally dead.....

Try Class 1 and see what happens?

			Nico Garcia
			Engineer, CIRL 
			Mass. Eye and Ear Infirmary
			raoul@cirl.meei.harvard.edu

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