I read the Thread between Steve Underwood and VladK and I also tried to
reproduce the scenarios.
Currently I get the following results:
1. T.38 FAX -> RxFAX
--------------------
1.1. FAX -> SIPURA SPA-2100 (T.38)
-> OpenPBX T.38 pass-through
-> RxFAX (T.38)
= OK
1.2. FAX -> Grandstream HT-286/486 (T.38)
-> OpenPBX T.38 pass-through
-> RxFAX (T.38)
= OK
1.3. FAX -> LINKSYS PAP2T (T.38)
-> OpenPBX T.38 pass-through
-> RxFAX (T.38)
= ERROR
2. PSTN FAX -> T.38 SIP FAX
---------------------------
2.1. PSTN FAX -> SS7
-> Asterisk
-> OpenPBX T38Gateway()
-> SIPURA SPA-2100 (T.38)
= OK
2.2. PSTN FAX -> SS7
-> CIRPACK Softswitch
-> OpenPBX T38Gateway()
-> Grandstream HT-286/486 (T.38)
= ERROR (Grandstream will not ring ???)
2.3. PSTN FAX -> SS7
-> CIRPACK Softswitch (SIP, no T.38)
-> OpenPBX T38Gateway()
-> LINKSYS PAP2T (T.38)
= ERROR (communication error, bad pages)
3. T.38 SIP FAX -> PSTN FAX
---------------------------
3.1. FAX -> SIPURA SPA-2100 (T.38)
-> OpenPBX T38Gateway()
-> CIRPACK Softswitch (SIP, no T.38) -> SS7
-> PSTN FAX
= ERROR (communication error + empty pages)
3.2. FAX -> SIPURA SPA-2100 (T.38)
-> OpenPBX T38Gateway()
-> Asterisk (SIP, no T.38) -> SS7
-> PSTN FAX
= ERROR (communication error + empty pages)
3.3. FAX -> Grandstream HT-286/486 (T.38)
-> OpenPBX T38Gateway()
-> CIRPACK Softswitch (SIP, no T.38) -> SS7
-> PSTN FAX
= ERROR (communication error + empty pages)
3.4. FAX -> Grandstream HT-286/486 (T.38)
-> OpenPBX T38Gateway()
-> Asterisk (SIP, no T.38) -> SS7
-> PSTN FAX
= ERROR (Grandstream will not ring ???)
3.5. FAX -> LINKSYS PAP2T (T.38)
-> OpenPBX T38Gateway()
-> CIRPACK Softswitch (SIP, no T.38) -> SS7
-> PSTN FAX
= ERROR (communication error + empty pages)
3.6. FAX -> LINKSYS PAP2T (T.38)
-> OpenPBX T38Gateway()
-> Asterisk (SIP, no T.38) -> SS7
-> PSTN FAX
= ERROR (communication error + empty pages)
4. T.38 -> T.38
---------------
4.1. FAX -> SIPURA SPA-2100 (T.38)
-> OpenPBX T.38 pass-through
-> SIPURA SPA-2100 (T.38) -> FAX
= OK
4.2. FAX -> Grandstream HT-286/486 (T.38)
-> OpenPBX T.38 pass-through
-> Grandstream HT-286/486 (T.38)
= ERROR (Grandstream will not ring ???)
4.3. FAX -> LINKSYS PAP2T (T.38)
-> OpenPBX T.38 pass-through
-> * (T.38)
= ERROR
Versions
--------
OpenPBX SVN reversion 2544
spandsp-0.0.3pre27
LINKSYS PAP2T v5.1.3(LS)
SIPURA SPA-2100 v3.3.6
Grandstream HT-286 v1.0.7.19
Grandstream HT-486 v1.0.6.7
Summary
-------
1. T38Gateway is not working for SIP+T.38 -> PSTN, but is working fine
with conversion from PSTN -> SIP+T.38.
2. There is a bug in the new LINKSYS PAP2T firmware. There is no valid
T.38 support inside??? Could somebody send me an older (working)
firmware to me, please?
3. The Grandstream ATAs are sending T.38 fine. But they could only
receive incoming calls one times. Afterwards the are are unable to
receive incoming calls on OpenPBX. A reboot of the ATA will help.
If the ATAs are connected via an OpenSER environment they are working
fine in both directions.
Regards
Bastian
Mike Fedyk schrieb:
> Check the archives for -users and -dev. There is a thread between steve
> underwood and someone working through t.38 quirks in a fax machine. If
> you can reproduce the information provided from the user in that thread
> it will probably be very helpful.
>
> Mike
>
> Bastian Schern wrote:
>> Hello,
>>
>> I also operating around T38Gateway(). At the moment it looks like
>> PSTN/SIP (no T.38) -> SIP T.38 is working fine. But other way around
>> not. I'm not sure if this is a random behavior or not.
>> Did anybody else get some more/other experience with it.
>> The T.38 Pass-Through is working very well.
>>
>> If I can help to improve T38Gateway() functionality let me know. I'm
>> willing to test and also to code.
>>
>> Regards
>> Bastian
>>
>> Ming-Wei Shih schrieb:
>>> There is no T.38 gateway support in the RC3, and gw support
>>> in the trunk is very limited. Hopefully this will cahnge soon
>>>
>>> xming
>>>
>>> Jbebeau wrote:
>>>> Luki,
>>>>
>>>> You diagram is correct. The T.38 stream is between the SPA1001 and
>>>> OpenPBX. This is EXACTLY what I want.
>>>>
>>>> The adapter is now a Linksys SPA1001 using FW 3.1.19SE, HW Rev 2.0.1. The
>>>> device seems to try doing T.38. When I hook it up to Asterisk 1.2.10,
>>>> Asterisk tells me it "doesn't know how to do T.38" when the fax machine
>>>> tries to send; a voice call works correctly.
>>>>
>>>> It seems there is some support in Asterisk for T.38, in some release or
>>>> svn, but it's unclear to me exactly what support and in which source. It
>>>> also seems that the Gateway functon, to the PSTN is available only in
>>>> OpenPBX.
>>>>
>>>> Jon
>>>>
>>>>
>>>> -----Original message-----
>>>> From: Luki [EMAIL PROTECTED]
>>>> Date: Fri, 16 Feb 2007 01:27:19 -0500
>>>> To: "OpenPBX.org Users Mailing List - Non-Commercial
>>>> Discussion"[email protected]
>>>> Subject: Re: [Openpbx-users] OpenPBX 1.2 RC3 as PSTN gateway?
>>>>
>>>>
>>>>>> 2) Will the configuration above, real-fax-machine to the PSTN work?
>>>>>>
>>>>> As far as I know the Sipura 1001 does not support T.38. The 210X
>>>>> series does. The T.38 transmission would be between the Sipura and
>>>>> OpenBPX, so essentially the PBX box has to convert T.38 <-> PRI/T1.
>>>>>
>>>>> Did I get that right? If so, I'd love to hear if that's already
>>>>> possible as well :).
>>>>>
>>>>> --Luki
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