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Re: [hylafax-users] Multitech MT5634ZPX-PCI-U RECV FAX: No answer (T.30 T1 timeout)



The problem is that I do not know who the sender is. Any way I can find
out by means of any server logs? 

Alex Koh


-----Original Message-----
From: Lee Howard [mailto:faxguy@xxxxxxxxxxxxxxxx] 
Sent: Wednesday, February 15, 2006 12:57 PM
To: Alex Koh
Cc: hylafax-users@xxxxxxxxxxx
Subject: Re: [hylafax-users] Multitech MT5634ZPX-PCI-U RECV FAX: No
answer (T.30 T1 timeout)

Alex Koh wrote:

> Feb 14 16:10:12.58: [ 2370]: <-- [9:AT+FRH=3\r]
>
> Feb 14 16:10:19.58: [ 2370]: --> [0:]
>
> Feb 14 16:10:19.58: [ 2370]: MODEM <Empty line>
>
> Feb 14 16:10:19.58: [ 2370]: <-- data [1]
>
> Feb 14 16:10:19.59: [ 2370]: --> [2:
>
------------------------------------------------------------------------
> ]
>
> Feb 14 16:10:19.59: [ 2370]: --> [2:OK]
>

The "MODEM Empty line" occurse because the modem isn't able to detect a 
V.21 HDLC carrier for 7 seconds after the AT+FRH=3 command.  At that 
point CAN is sent to the modem to cancel... and apparently the modem 
responds to that with 4 bytes... first the two mystery bytes, and then 
OK.  The two mystery bytes are probably <DLE><ETX> or <CR><LF> and in 
either case this would be normal.  They are "mystery" bytes probably 
because they're coming through in my mail reader in an odd fashion.

If the sender is for certain a fax machine then MultiTech may be 
interested in hearing from you.

Lee.

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