Re: [hylafax-users] T.38 / T.30 handshake problems

["Atis Lezdins" <atis@xxxxxxxxxxx>]

On Mon, Aug 4, 2008 at 4:59 PM, Lee Howard <faxguy@xxxxxxxxxxxxxxxx> wrote:
> Atis Lezdins wrote:
>>
>> Jul 31 10:45:58.60: [ 3884]: ANSWER: FAX CONNECTION  DEVICE '/dev/ttyIAX1'
>> Jul 31 10:45:58.60: [ 3884]: STATE CHANGE: ANSWERING -> RECEIVING
>> Jul 31 10:45:58.60: [ 3884]: RECV FAX: begin
>> Jul 31 10:45:58.60: [ 3884]: <-- HDLC<32:FF C0 04 B5 00 AA 12 9E 36 86
>> 62 82 1A 04 14 2E B6 94 04 6A A6 4E CE 96 F6 76 04 AC 74 4C 74 4C>
>> Jul 31 10:45:58.60: [ 3884]: <-- data [32]
>> Jul 31 10:45:58.60: [ 3884]: <-- data [2]
>> Jul 31 10:45:59.56: [ 3884]: --> [7:CONNECT]
>> Jul 31 10:45:59.56: [ 3884]: <-- HDLC<23:FF C0 02 B6 A6 26 F6 B6 1A 82
>> 92 04 04 04 04 04 04 04 04 04 04 04 04>
>> Jul 31 10:45:59.56: [ 3884]: <-- data [23]
>> Jul 31 10:45:59.56: [ 3884]: <-- data [2]
>> Jul 31 10:46:00.30: [ 3884]: --> [7:CONNECT]
>> Jul 31 10:46:00.30: [ 3884]: <-- HDLC<13:FF C8 01 00 73 5F 23 01 FB C1 01
>> 01 18>
>> Jul 31 10:46:00.30: [ 3884]: <-- data [13]
>> Jul 31 10:46:00.30: [ 3884]: <-- data [2]
>> Jul 31 10:46:00.88: [ 3884]: --> [2:OK]
>> Jul 31 10:46:00.88: [ 3884]: <-- [9:AT+FRH=3\r]
>> Jul 31 10:46:01.20: [ 3884]: --> [7:CONNECT]
>> Jul 31 10:46:04.48: [ 3884]: --> [10:NO CARRIER]
>
> At this point the IAXmodem record feature would be extremely useful.  I
> trust that you're running IAXmodem on the PSTN and through your VoIP
> provider?

Ok, i did a capture of similar unsuccessful fax call. As i understand
-dsp and -iax correspond to incoming/outgoing audio? It seems that at
this point audio goes both ways.

The connection is like this:

Hylafax <-> IAXmodem <-> Asterisk <-> PRI <-> PSTN <-> VoIP provider
<-> T38modem <-> Asterisk <-> Hylafax

The first side - Hylafax/IAXmodem/Asterisk/PRI works fine, but we want
to migrate to pure VoIP and use T.38 instead, so we are testing this.

Thanks for help.

Regards,
Atis

-- 
Atis Lezdins,
VoIP Project Manager / Developer,
atis@xxxxxxxxxxx
Skype: atis.lezdins
Cell Phone: +371 28806004
Cell Phone: +1 800 7300689
Work phone: +1 800 7502835

Attachment: iaxmodem1-dsp.raw
Description: Binary data

Attachment: iaxmodem1-iax.raw
Description: Binary data