Re: [hylafax-users] Line broken on remote fax (Gestetner-RICOH)

[Lee Howard <faxguy@xxxxxxxxxxxxxxxx>]

On 2004.08.18 01:32 Sipho Mothobi wrote:
> Hi all,
>
> A couple of months ago a raised an issue with the Gestetner fax
> machine
> having problem with sucessfully completing the communication with
> hylafax.
> I have since noticed that this is not problem solely atributed to
> Gestetner's but also Rightfax and it recieves that fax but the report
> states as follows :
>
> -------------------REMOTE SESSION LOG ----------------------------
> 2004-08-17 17:13:16 Transmission Record
>
>      Transfer Type:    Receive fax
>      Remote CSID:      [Rand Merchant Bank i]
>      Unique ID:        [SIP41223CFA602C]
>      Time to Transfer: 1:12
>      Sent on Channel:  0
>     Inbound user ID: SIPHOMOTHOBI, Routing Code: 4031
>      AOC:              [0][0][0][0]
>      Result:           Line broken (no loop current)
>      Brooktrout Res:   Call [0:352]; Fax [4:3]
>      Pages Sent:       1 - 2

The "Line broken (no loop current)" indicates that the receiver is 
using digital equipment and thus knows exactly when the connection 
drops.  Looking at the log, however, it's not clear what it's 
complaining about, because the receiver transmits MCF as expected 
following both pages.

> Aug 17 17:14:18.84: [ 8693]: <-- [9:AT+FRH=3\r]
> Aug 17 17:14:19.10: [ 8693]: --> [7:CONNECT]
> Aug 17 17:14:20.28: [ 8693]: --> [2:OK]
> Aug 17 17:14:20.28: [ 8693]: SEND recv MCF (message confirmation)
> Aug 17 17:14:20.28: [ 8693]: SEND FAX (000000588): FROM null TO
> ########### (page 2 of 2 sent in 0:14)
> Aug 17 17:14:20.28: [ 8693]: SEND FAX (000000588): FROM null TO
> ########### (docq/doc1716.ps;01 sent in 0:39)
> Aug 17 17:14:20.28: [ 8693]: <-- [9:AT+FTH=3\r]
> Aug 17 17:14:20.36: [ 8693]: --> [7:CONNECT]
> Aug 17 17:14:20.36: [ 8693]: <-- data [3]
> Aug 17 17:14:20.36: [ 8693]: <-- data [2]
> Aug 17 17:14:21.66: [ 8693]: --> [2:OK]
> Aug 17 17:14:21.66: [ 8693]: <-- [5:ATH0\r]
> Aug 17 17:14:21.78: [ 8693]: --> [2:OK]
> Aug 17 17:14:21.78: [ 8693]: SESSION END

However, there is a possibility, I guess, that the BrookTrout modem in 
the RightFax receiver didn't detect the DCN signal that HylaFAX 
transmitted at the end of the fax session (the HDLC signal just before 
ATH0), and thus it detected a disconnection.

In HylaFAX 4.2.0 there is a suggested period of silence (AT+FRS=7) 
between the reception of the MCF signal and the transmission of the DCN 
signal.  This may fix your problem.

Lee.

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