--- channels/chan_sip.c 2008-07-10 05:55:45.000000000 +1200
+++ channels/chan_sip.c 2008-08-06 10:11:44.000000000 +1200
@@ -6667,6 +6667,7 @@
                add_header(&req, "X-asterisk-Info", "SIP re-invite (External RTP bridge)");
        if (!ast_test_flag(&p->flags[0], SIP_NO_HISTORY))
                append_history(p, "ReInv", "Re-invite sent");
+       try_suggested_sip_codec(p);
        add_sdp(&req, p);
        /* Use this as the basis */
        initialize_initreq(p, &req);
@@ -7021,6 +7022,7 @@
                                ast_log(LOG_DEBUG, "T38 is in state %d on channel %s\n", p->t38.state, p->owner ? p->owner->name : "<none>");
                        add_t38_sdp(&req, p);
                } else if (p->rtp)
+                       try_suggested_sip_codec(p);
                        add_sdp(&req, p);
        } else {
                add_header_contentLength(&req, 0);