[asterisk-dev] T38 gateway - consultation

[Daniel Ferenci]

Hi Asterisk Developers,

I would like to continue with my T38 gateway patch. (
https://issues.asterisk.org/view.php?id=13405)
Currently the T38 gateway patch offers just explicit gatewaying. User should
exec faxgateway application for particular extension.

There were requests for transparent gatewaying.
The case:
1. at some point Asterisk bridges channels A and B
2. Later asterisk receives T38 request on channel A (for example by
reinvite)
3. Asterisk determines it can not pass this request to channel B because B
reports it does not support T38 at all.
4. At this point Asterisk decides to start T38 gateway for A-B communication

I got couple of ideas how to implement this request.
Since I'm not the best knewledgable asterisk developer I would like to
discuss possible solutions with you.
Mybe there is better solution I was not able to find.

1. add T38 gatewaying to app_dial
(I think this would be feasible)
2. add T38 gatewaying as a new bridge or update current bridging
(yet I don't discover any way how to implement T38 gatewaying inside bridge
but maybe you can provide me by hints how to do it in this way)
3. add T38 as codec
(this is probably not feasible at all)

Can you please comment those possibilities and provide me by hints?
Or can you come up with any other possibility?

Thank you in advance.

Best regards
Daniel.
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