[Spce-user] Fwd: Re: Blacklist t.38 fax codec

Daniel Grotti dgrotti at sipwise.com
Fri Jun 20 07:23:35 EDT 2014


Hi,
I think you need to avoid to forward the T38 Re-INVITE, so you should
hack your SPCE in order to reply to the T38 re-invite with a "488 Not
acceptable here", for example.
So the sender SHOULD fallback to G711.
Anyway, the best solution if you have endpoint with t38 enabled but they
don't work well, is to disable t38.


Daniel



On 06/20/2014 01:15 PM, Leopoldo Iglesia wrote:
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> > But both endpoints support it, that is the problem and the only >
> scenario when it fails, so i want SPCE not to send Fax negotiation to
> > endpoint,.
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>  El 20/06/2014 12:12, Daniel Grotti escribió: >> Hi, >> that's
> strange, if one of the endpoints try to switch to t38 and the >> other
> endpoint doesn't support it, they should fallback to G711. >> >>
> Daniel >> >> >> >> >> >> >> On 06/20/2014 01:33 AM, Leopoldo Iglesia
> wrote: >>> How can I, blacklist t.38 to avoid endpoints to try t38
> negotiation? >>> >>> When i call from ericcson ont to fax capable
> endpoint, it try to >>> connect t38 fax and There is no voice. >>> >>>
> Thanks >>> >>> Leopoldo iglesia >>> >>>
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