diff --git a/sipdump.pl b/sipdump.pl
new file mode 100644
index 0000000..d9f7293
--- /dev/null
+++ b/sipdump.pl
@@ -0,0 +1,136 @@
+#!/usr/bin/perl
+
+use strict;
+use warnings;
+use Net::Pcap;
+use Getopt::Std;
+use Net::Frame;
+use Net::Frame::Layer::ETH;
+use Net::Frame::Layer::ETH qw(:consts);
+use Net::Frame::Layer::IPv4;
+use Net::Frame::Layer::IPv4 qw(:consts);
+use Net::Frame::Layer::TCP;
+use Net::Frame::Layer::UDP;
+use Net::Packet::Layer7;
+use Net::SIP::Packet;
+use Net::SIP::Response;
+use Net::SIP::Request;
+
+my $pktcount=0;
+my $curtime=0;
+my $reftime=0;
+my $endtime=0;
+my $timelen=0;
+
+sub process_pkt 
+{
+	my($user_data, $hdr, $pkt) = @_;
+
+	$reftime = $hdr->{tv_sec} if ($reftime == 0);
+	$endtime = $hdr->{tv_sec};
+
+	$curtime = sprintf("%d\n", $hdr->{tv_sec} - $reftime);
+	$pktcount++;
+
+	## TODO: check if this is actually ethernet frame before decoding
+	my $eth = Net::Frame::Layer::ETH->new(raw => $pkt);
+	$eth->unpack();
+	my $srcmac = $eth->src;
+	my $dstmac = $eth->dst;
+#	print "src-mac: $srcmac dst-mac: $dstmac ";
+
+	return if ($eth->type != NF_ETH_TYPE_IPv4);
+
+	my $raw="";
+
+	$raw = $eth->payload;
+	my $ipv4 = Net::Frame::Layer::IPv4->new(raw => $raw);
+	$ipv4->unpack();
+	my $srcip = $ipv4->src;
+	my $dstip = $ipv4->dst;
+
+	$raw = $ipv4->payload;
+	my $l4proto;
+
+	if ($ipv4->protocol == NF_IPv4_PROTOCOL_TCP)
+	{
+		$l4proto = Net::Frame::Layer::TCP->new(raw => $raw);
+		$l4proto->unpack();
+	}
+	
+	if ($ipv4->protocol == NF_IPv4_PROTOCOL_UDP)
+	{
+		$l4proto = Net::Frame::Layer::UDP->new(raw => $raw);
+		$l4proto->unpack();		
+	}
+
+	my $tcppayload = $l4proto->payload;
+	if ((index $tcppayload, "INVITE ") eq 0) {
+		print "src-ip: $srcip dst-ip: $dstip ";
+		print "\n";
+#		print "payload: $tcppayload\n";
+		my $sip = Net::SIP::Packet->new($tcppayload);
+		print "From: \t" . $sip->get_header( 'From' ) . "\n";
+		print "To: \t" . $sip->get_header( 'To' ) . "\n";
+		print "UA: \t" . $sip->get_header( 'User-Agent' ) . "\n";
+	}
+
+
+}
+
+sub help {
+	print "sipdump [-h] -f pcapfile [-e filter expression]\n";
+	print "\n";
+	print "\t-h\t\thelp\n";
+	print "\t-f pcapfile\tinput file name (required)\n";
+	print "\t-e expression\tfilter expression (tcpdump compatible)\n";
+	print "\n";
+	exit();
+}
+
+sub dump_data {
+	my @data=@_;
+
+	open(my $fh, ">", "temp.data");
+
+	for (my $i = 0; $i <= $timelen; $i++) {
+		print $fh "$i $data[$i]\n";
+	}
+
+	close($fh);
+}
+
+#### main 
+
+my $err ='';  
+my %opts=();
+
+getopts('he:f:', \%opts);
+
+if (defined $opts{h}) { help(); }
+if (not defined $opts{f}) { help(); }
+
+my $inputfile=$opts{f};
+
+# process the pcap again, now do the bps and pps calculation
+my $pcap = Net::Pcap::open_offline($inputfile,\$err) or die "Can't open file...$err\n";
+
+my $filter="tcp or udp";
+$filter = $opts{e} if (defined $opts{e});
+
+my $filter_t;
+if (Net::Pcap::compile($pcap, \$filter_t, $filter, 1, 0) == -1) {
+		die "Unable to compile filter expression '$filter'\n";
+	}
+Net::Pcap::setfilter($pcap, $filter_t);
+
+Net::Pcap::loop($pcap, -1, \&process_pkt, '');
+Net::Pcap::close($pcap);
+
+$timelen = $endtime - $reftime;
+
+print STDERR "Packet Count:\t\t $pktcount\n";
+print STDERR "Capture Duration:\t $timelen seconds\n";
+print STDERR "Filter Expression:\t\t$filter\n";
+
+