Asterisk 1.2 has no support of t.38 whatsoever, the call will drop before t.38 is ever utilised, not even pass-thru.
1.4 Adds support for T.38 pass through only and no other sort of faxing, the endpoint must support T.38 and you must send your call to a T.38 gateway and you must not use NAT anywhere in your network and you must enable re-invites which could cause CDRs not to reflect the true details of the call. Asterisk/Digium also has no interest in any further interest in expanding T.38 or faxing support in Asterisk. Steve Underwood and the other fine persons that have helped to develop the software DSPs and other stuff required for FoIP support also have no interest in writing any further faxing support for Asterisk (RxFax, TxFax + the newest span_dsp wont even compile, much less work under Asterisk any more) probably because they know it will never be included into the Asterisk code. On 2/5/07, Checkov, Andrew <[EMAIL PROTECTED]> wrote:
Some addition: I tried the same boxes with Asterisk 1.2 and 1.4 - no success at all - it seems that you can get T.38 with Asterisk ONLY with Reinvite enabled (but it doesn't work reliable in case of NAT) - no T.38 passthrough as with openpbx.org.
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