Re: [hylafax-users] Problem with a Devolo Micolink 56k FunII

[Lee Howard <faxguy@xxxxxxxxxxxxxxxx>]

On 2004.11.18 00:09 Matthias Reich wrote:

> this does only happen to certain receivers, as I found out in the logs
> the remote equipment identifies itself as:
>
> NSF remote fax equipment: Brother Intellifax 770
>
> or just
>
> NSF remote fax equipment: Brother
>
> When I compare the logs, I can find a difference in the HDLC-lines,
> not
> knowing what the are good for

> comparing these two log, I can only find a difference in the
> HDLC-lines.
> HDLC<6:FF C8 C1 00 45 14> -> successful
> HDLC<6:FF C8 C1 00 44 1E> -> not successful

Well, one is the CFR signal (indicates successful).  The other is the 
FTT (failure to train) signal.  These signals come from the receiver; 
the receiver decides which to send based on the TCF signal and the DCS 
signal that we sent to them.

> Is that what is causing the failures, and if yes, how can I avoid it
> in
> future.
> In the one case the training succeeded, in the (br)other-case the
> modem sends
> AT+FTS=7 instead.

HylaFAX sends AT+FTS=7 to the modem to transmit periods of silence.  
This is always required.

Please set "TracingMask: 0x11" in your modem config file (for receiver 
and sender) on the line right before "SessionTracing: 0xFFF" and then 
send a fax using this modem to another HylaFAX receiver.  Please send 
both the receive session log and the send session log.  I will need to 
analyze the TCF signal on the receiver-side to determine what it is 
that is possibly causing the Brother fax machines to complain about it.

Thanks.

Lee.

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