RECV FAX: No answer (T.30 T1 timeout)

Problema recibiendo faxes con hylafax 4.2, viendo en los logs de recepcion de fax entradas tal que: RECV FAX: No answer (T.30 T1 timeout)

Tras hacer una busqueda sobre los foros de Hylafax descubro que se trata de un bug en el código de fax Class1.
http://www.hylafax.org/archive/2004-10/msg00022.html

http://bugs.hylafax.org/bugzilla/attachment.cgi?id=669&action=view

diff -r -u hylafax-4.2.0.orig/faxd/Class1.c++ hylafax-4.2.0/faxd/Class1.c++
--- hylafax-4.2.0.orig/faxd/Class1.c++  2004-08-09 21:29:58.000000000 +0200
+++ hylafax-4.2.0/faxd/Class1.c++       2005-07-18 09:31:43.000000000 +0200
@@ -1088,9 +1088,9 @@
      * sendFrame() is always called with a timeout set.
      * Let's keep it that way
      */
-    return (putModemDLEData(frame, frame.getLength(), frameRev, 0) &&
-       putModem(buf, 2, 0) &&
-       (useV34 ? true : waitFor(frame.moreFrames() ? AT_CONNECT : AT_OK, 0)));
+    return (putModemDLEData(frame, frame.getLength(), frameRev, 60*1000) &&
+       putModem(buf, 2, 60*1000) &&
+       (useV34 ? true : waitFor(frame.moreFrames() ? AT_CONNECT : AT_OK, 60*1000)));
 }

 /*
@@ -1258,8 +1258,8 @@
        return recvRawFrame(frame);
     }
     startTimeout(ms);
-    bool readPending = atCmd(rhCmd, AT_NOTHING, 0);
-    if (readPending && waitFor(AT_CONNECT,0)){
+    bool readPending = atCmd(rhCmd, AT_NOTHING);
+    if (readPending && waitFor(AT_CONNECT, ms)){
         stopTimeout("waiting for HDLC flags");
         if (wasTimeout()){
             abortReceive();
@@ -1289,8 +1289,8 @@
     fxStr rmCmd(br, rmCmdFmt);
     startTimeout(ms);
     do {
-       readPending = atCmd(rmCmd, AT_NOTHING, 0);
-       gotCarrier = readPending && waitFor(AT_CONNECT, 0);
+       readPending = atCmd(rmCmd, AT_NOTHING);
+       gotCarrier = readPending && waitFor(AT_CONNECT, ms);
     } while (readPending && !gotCarrier && lastResponse == AT_FCERROR);
     /*
      * If carrier was recognized, collect the data.

Para aplicar el parche sobre gentoo realizamos los siguientes pasos con las facilidades del portage:

# ebuild /usr/portage/net-misc/hylafax/hylafax-4.2.0-r2.ebuild fetch
# ebuild /usr/portage/net-misc/hylafax/hylafax-4.2.0-r2.ebuild unpack
# cd /var/tmp/portage/hylafax-4.2.0-r2/work
# patch -p0 < parche_class1.diff
# ebuild /usr/portage/net-misc/hylafax/hylafax-4.2.0-r2.ebuild compile
# ebuild /usr/portage/net-misc/hylafax/hylafax-4.2.0-r2.ebuild install
# ebuild /usr/portage/net-misc/hylafax/hylafax-4.2.0-r2.ebuild qmerge