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Configuring Asterisk for Receiving and E-mailing Faxes

UPDATE: 3/12/2010 : bytesolutions

 


 

 

FreePBX includes a setup for faxing; however, two components needed for operation are not installed.

 

 


 

 

FreePBX includes a setup for faxing; however, two components needed for operation are not installed.

Additional info: http://www.voip-info.org/wiki/view/app_rxfax+and+app_txfax
·                   SpanDsp: http://soft-switch.org/
·                   AGX Extra Add-ons for Asterisk – consisting of modules for rxfax and txfax functions.
·                    Due to Asterisk project dual license some useful code cannot be submitted into the official repository.
This includes:
·                         enhanced app_rxfax (app_rxfax)
·                         enhanced app_txfax (app_txfax)
·                         device state (DevState from Bristuff)
·                         Pickup2 (enhanched Pickup, taken from Bristuff)
·                         FAX Background detect (nv_background_detect)
·                         FAX detect (nv_faxdetect)

No patching is required, the source use the same structure as the official add-ons using an independent build system with a nice XML menu tree selection tool. Note that for fully working FAX support you will need at least spanDSP 0.0.4 pre16.

SpanDSP should be installed first. A specific version is suggested 0.0.4 pre16.
  • Make sure the other requisites are installed.
  • Install CMake
    • http://atrpms.net/dist/el5/cmake/
  • ./configure
  • make
  • make install
AGX Extra Add-ons for Asterisk
  • You can find the source via tarball or svn at https://sourceforge.net/projects/agx-ast-addons/
  • Use svn to get the latest files.
    • svn co https://agx-ast-addons.svn.sourceforge.net/svnroot/agx-ast-addons agx-ast-addons
  • Traverse to the trunk folder.
  • Read the README for additional details.
  • You will need to add the lib path to the config and run ldconfig or the setup will fail.
fax2mail – This may be a useful script for emailing the fax as a pdf.
 #!/bin/bash
#=========================================================================|
#                                                                         |
# File: fax2mail                                                          |
# Type: BASH script                                                       |
# Summary: fax to E-Mail helper application for asterisk PBX              |
# Description: fax2mail is a helper application which sits between        |
#   asterisk and a MTA.  Is is designed to be called by asterisk upon the |
#   receipt of a new fax.  It will forward the received fax to the email  |
#   address of choice, and will convert the file the one of several       |
#   formats.                                                              |
#                                                                         |
#=========================================================================|
#                                                                         |
# Usage:                                                                  |
#   fax2mail allows these parameters from asterisk as follows:            |
#     -p = To attach in pdf format (default)                              |
#     -e = To attach in eps format                                        |
#     -t = To attach in tif format                                        |
#     -f = absolute path to file w/out .tif extension                     |
#     –cid-name <CID Name> = Set CID Name of caller to <CID Name>        |
#     –cid-number <CID Number> = Set CID Number of caller to <CID Number>|
#     –dest-exten <Exten Called> = Used to look up destination info      |
#         from voicemail.conf.                                            |
#     –dest-email <Destination Email> = Used to send teh email to.       |
#         optional if –dest-exten is provided so that the email address  |
#         can be looked up in voicemail.conf                              |
#                                                                         |
#=========================================================================|
#                                                                         |
# Examples:                                                               |
#   fax2mail -f /absolute/path/file                                       |
#     file.tif in /absolute/path/ would be coverted to a pdf and sent to  |
#     the email address specified in the ‘DEFAULTTO’ global variable      |
#   fax2mail -f /absolute/path/file –dest-exten 100                      |
#     file.tif in /absolute/path/ would be converted to a pdf and sent to |
#     the email address associated with the exten 100 in voicemail.conf   |
#   fax2mail -t -f /absolute/path/file –dest-email user@domain.tld       |
#     file.tif in /absolute/path/ would be emailed in tif format to       |
#     user@domain.tld                                                     |
#                                                                         |
#=========================================================================|
#                                                                         |
#  Astrerisk config:                                                      |
#    [default]                                                            |
#    …Unimportant stuff removed for this…                             |
#    ;Detected fax call                                                   |
#    exten => fax,1,Goto(fax,s,1)                                         |
#                                                                         |
#    [fax]                                                                |
#    exten => s,1,Macro(recvfax)                                          |
#    exten => h,1,System(‘/usr/bin/fax2mail –cid-number ‘${CALLERIDNUM}’ |
#             –cid-name ‘${CALLERIDNAME}’ –dest-exten ‘${INIT_EXTEN}’   |
#             -f ‘${FAXFILE}”)                                           |
#    NOTE: INIT_EXTEN has to be set with something similar to…          |
#          exten => s,n,Set(INIT_EXTEN=${EXTEN})                          |
#                                                                         |
#  [macro-recvfax]                                                        |
#    ;                                                                    |
#    ;  Receive incoming fax macro:                                       |
#    ;                                                                    |
#    exten => s,1,Set(FAXFILE=/var/spool/asterisk/fax/${STRFTIME(${EPOCH} |
#              ,,%Y%m%M%S)}-${CALLERIDNUM}-${INIT_EXTEN})                 |
#    exten => s,2,rxfax(${FAXFILE}.tif)                                   |
#                                                                         |
#=========================================================================|
#                                                                         |
# Dependencies:                                                           |
#   This application requires asterisk, ast_fax, app_rxfax, tifflib       |
#   mime-construct                                                        |
#                                                                         |
#=========================================================================|
#                                                                         |
# Author:                                                                 |
#   Designed and written by Michelle Dupuis on October 7, 2005            |
#   Michelle can be reached at support@ocgca                              |
#   This script and other related tools are available for download        |
#   at www.generationd.com                                                |
#                                                                         |
#=========================================================================|
#                                                                         |
# DATE         VER  AUTHOR        DESCRIPTION                             |
# Oct 7 2005   1.0  M Dupuis      Original coding                         |
# Oct 9 2005   1.8  M Dupuis      Better parameter & email checking       |
# Oct 23 2005  1.9  M Dupuis      Syntax error fixes, hand ! in ID name   |
# Oct 25 2005  2.0  M Dupuis      Improved page count mechanism           |
# Nov 23 2006  2.1  J Puckett     Generalized the script & pulled vars    |
#                                 from voicemail.conf                     |
# Nov 29 2006  2.2  J Puckett     Made grep use regex to find exten and   |
#                                 modified documentation                  |
# May 1 2008   2.3  Asif Iqbal    Fix comment error, fix double redirect  |
#                                                                         |
#=========================================================================|
VERSION=’fax2mail v2.3′
LOGFILE=’/var/log/asterisk/faxlog’  #Set to /dev/null to disable logging
DATETIME=$(date +’%A, %B %d %Y, at %I:%M %p’)
FROMEMAIL=’Asterisk PBX <asterisk@spinen.com>’
DEFAULTTO=’info@spinen.com’
echo >>$LOGFILE
echo $VERSION >>$LOGFILE
echo ‘  Triggered on $DATETIME’>>$LOGFILE
echo ‘  Called with $*’>>$LOGFILE
if [ ${#} -le 1 ]; then
echo ‘Usage: $CMD_SCRIPT [-p | -e | -t] -f File [–cid-name <CID Name>] [–cid-number <CID Number>] [–dest-exten <Extension Called>] [–dest-name <Destination Name>] [–dest-email <Destination Email>]’
echo ‘  No parameters were given.’>>$LOGFILE
exit 1;
fi
CID_NAME=”
CID_NUMBER=”
DEST_NAME=”
DEST_EMAIL=”
DEST_EXTEN=”
FILE=”
FORMAT=’pdf’
while [ ${#} -gt 0 ]; do
case ‘${1}’ in
‘–cid-name’ )
CID_NAME=${2}
shift
;;
    ‘–cid-number’ )
CID_NUMBER=${2}
shift
;;
    ‘–dest-name’ )
DEST_NAME=${2}
shift
;;
    ‘–dest-email’ )
DEST_EMAIL=${2}
shift
;;
‘–dest-exten’ )
DEST_EXTEN=${2}
shift
;;
‘–file’ | ‘-f’ )
FILE=${2}
shift
;;
    ‘-e’ )
FORMAT=’eps’
;;
    ‘-t’ )
FORMAT=’tif’
;;
    ‘-p’ )
FORMAT=’pdf’
;;
  esac
  shift
done
if [ ‘$FILE’ = ” ]; then
echo ‘Error: A file is required’
echo ‘  No file was given.’>>>>$LOGFILE
exit 1;
fi
echo ‘  CallerID number of fax sender = $CID_NUMBER’>>$LOGFILE
echo ‘  CallerID name of fax sender = $CID_NAME’>>$LOGFILE
echo ‘  Fax number called = $DEST_EXTEN’>>$LOGFILE
echo ‘  Destination name = $DEST_NAME’>>$LOGFILE
echo ‘  Destination email address = $DEST_EMAIL’>>$LOGFILE
echo ‘  Fax file name (without .tif extension) = $FILE’>>$LOGFILE
echo ‘  Attachment format conversion = $FORMAT’>>$LOGFILE
# Correct for missing info
if [ ‘$CID_NUMBER’ = ” ] ; then
CID_NUMBER='<unknown number>’
echo ‘    Set CallerID number of fax sender to $CID_NUMBER’>>$LOGFILE
fi
# Must surround in quotes in case name is preceded by a !
if [ ‘$CID_NAME’ = ” ] ; then
CID_NAME='<unknown name>’
echo ‘    Set CallerID name of fax sender to $CID_NAME’>>$LOGFILE
fi
if [ ‘$DEST_EXTEN’ = ” ] ; then
DEST_EXTEN='<unknown number>’
echo ‘    Set Fax number called to $DEST_EXTEN’>>$LOGFILE
fi
# Get destination name if empty
if [ ‘$DEST_NAME’ = ” ] ; then
DEST_NAME=`egrep ‘^$DEST_EXTEN\s*=>\s*’ /etc/asterisk/voicemail.conf | cut -d, -f2`
echo ‘    Set Destination name to $DEST_NAME’>>$LOGFILE
fi
# Get destination email if empty
if [ ‘$DEST_EMAIL’ = ” ] ; then
DEST_EMAIL=`grep ‘^$DEST_EXTEN\s*=>\s*’ /etc/asterisk/voicemail.conf | cut -d, -f3-`
if [ ‘$DEST_EMAIL’ = ” ] ; then
DEST_EMAIL=$DEFAULTTO
fi
echo ‘    Set Destination email address to $DEST_EMAIL’>>$LOGFILE
fi
SOURCEFILE=$FILE.tif
DESTFILE=$FILE.$FORMAT
INFOFILE=$FILE.txt
if [ -e $SOURCEFILE ]
then
echo ‘  Fax file $SOURCEFILE found.’>>$LOGFILE
  # Read data from TIFF file
PAGES=$(tiffinfo $SOURCEFILE | grep ‘Page’ | cut -d ‘ ‘ -f 1)
DT=$(tiffinfo $SOURCEFILE | grep ‘Date’)
DTFAX=${DT#*:}
COUNT=${PAGES#*-}
if [ -z $COUNT ]
then
# If didn’t find a page count, use the number of occurrences of ‘spandsp’
COUNT=$(grep -c ‘spandsp’ $SOURCEFILE)
if [ -z $COUNT ]
then
COUNT='<unknown>’
fi
fi
# Do any conversions requested
case ‘$FORMAT’ in
# Check if PDF conversion required
‘pdf’ )
tiff2pdf -f -p letter $SOURCEFILE > $DESTFILE
#I like to keep around for a few days & use tmpwatch to clean up
#    rm -f $SOURCEFILE
echo ‘  Converted $SOURCEFILE to $DESTFILE.’>>$LOGFILE
;;
  # Check if EPS conversion required
‘eps’ )
tiff2ps -2eaz -w 8.3 -h 11.7 $SOURCEFILE > $DESTFILE
#    rm -f $SOURCEFILE
echo ‘  Converted $SOURCEFILE to $DESTFILE.’>>$LOGFILE
;;
  # Default to leave as tif
*)
echo ‘  No conversion of $SOURCEFILE required.’>>$LOGFILE
;;
esac
echo -n >$INFOFILE
echo ‘Dear $DEST_NAME,’>>$INFOFILE
echo >>$INFOFILE
echo ‘You have just received a $COUNT page fax from $CID_NAME <$CID_NUMBER>, at phone number $DEST_EXTEN, on $DATETIME.  The original fax document is attached in $FORMAT format.’>>$INFOFILE
echo >>$INFOFILE
echo >>$INFOFILE
echo >>$INFOFILE
cat $DESTFILE | mime-construct –subpart –attachment fax.$FORMAT –type application/$FORMAT –file – >$FILE.part1
cat $INFOFILE | mime-construct –header ‘From: $FROMEMAIL’ –to $DEST_EMAIL –subject ‘[PBX]: New fax from $CID_NAME <$CID_NUMBER>’ –subpart-file $FILE.part1 –file –
echo ‘  E-mailed file to $DEST_EMAIL’>>$LOGFILE
# Delete the destination file
echo ‘  Removing destination file $DESTFILE’>>$LOGFILE
rm -f $DESTFILE
# Exit with OK status code
RETVAL=0
# Else tif file is missing
else
echo ‘  Fax file $SOURCEFILE not found.’>>$LOGFILE
echo -n > $INFOFILE
echo ‘Dear $DEST_NAME,’>>$INFOFILE
echo >>$INFOFILE
echo ‘You have just received a fax attempt from $CID_NAME <$CID_NUMBER>, at phone number $DEST_EXTEN, on $DATETIME.  There was a problem receiving the fax.’>>$INFOFILE
echo >>$INFOFILE
echo >>$INFOFILE
cat $INFOFILE | mime-construct –header ‘From: $FROMEMAIL’ –to $DEST_EMAIL –subject ‘[PBX]: Failed fax attempt from $CID_NAME <$CID_NUMBER>’ –file –
echo ‘  ‘E-mailed warning to $DEST_EMAIL >>$LOGFILE
RETVAL=1
fi
# Delete the temporary message file
rm -f $FILE.part1
rm -f $INFOFILE
echo >>$LOGFILE
# exit with failure code
exit $RETVAL
BytesAdmin
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