There exists a T.38 gateway patch for asterisk 1.8, back-ported from the support in asterisk 10 (both the initial work and the backport was done by irroot, who seems to be fairly solid). Reproducible: Always
Created attachment 287303 [details, diff] t38gateway-1.8.patch Thanks Tony.
+*asterisk-1.8.7.0_rc2 (22 Sep 2011) + + 22 Sep 2011; Tony Vroon <chainsaw@gentoo.org> +asterisk-1.8.7.0_rc2.ebuild: + Release candidate which should be a big step up from 1.8.6.0; backported T38 + gateway support as requested by Jaco Kroon in bug #383979. All patches either + rediffed by or created by Erik Wallin in bug #383987.