Q. How is this tool different from Vomit?

A. In fact they don't have anything in common apart from the fact that they both can output a wave
file out of a voice stream.

However, vomit can only sniff Cisco Ip Phones, whereas VoIPong processes packets independent of
the signalling protocol used, which, in turn, enables VoIPong to process SIP, H323 as well as Cisco
Skinny.

Q. VoIPong cannot detect any calls?

A. Like all those "sniffer" tools in the market, you have to make sure that the ethernet interface
VoIPong is running on can "see" your traffic. If you're using a dummy hub, you need not bother,
If you have a switch, you may need to configure a monitor port.

Q. VoIPong cannot detect some of the calls. (especially the dummy IP adapters.)

A. My "catching" algorithm is based on RTP and RTCP RFCs. The requirements enlisted
on those RFCs are enforced to my filters...

There are pros and cons of this approach: The #1 advantage is the there will approx.
never be "false-positives" and #1 disadvantage is some of the calls will go undetected.

The reason that you're not seeing the call is "most probably", device does
not send/receive RTCP link control information "during" the call, it sends the RTCP
packet "at the end" of the conversation, just to signal that the call has been ended.

I've started to hear complaints similar to this, so I'll most likely design another
algo and let the user decide on the "filter".

Q. I get this compilation error, what is the problem?

voipongpcap.o: In function `initpcap':
voipongpcap.o(.text+0x2d4): undefined reference to `pcap_setnonblock'
voipongrtp.o: In function `childmain':
voipongrtp.o(.text+0xe85): undefined reference to `pcap_setnonblock'
collect2: ld returned 1 exit status

A.Please use a recent version of pcap library from tcpdump.org

Q. make bails out with this error on BSD systems

mb@hasanusta ~/v$ make
"Makefile", line 338: Need an operator
make: fatal errors encountered -- cannot continue

A.Please use "gmake".

Q. When I start voipong, I get this error.

07/02/05 15:53:43: libpcap start failure: pcap_open_live: ioctl: No such device

A.Please specify your ethernet "device" in your voipong.conf

Q. I specified my ethernet device in voipong.conf, after some time I start getting the same error:.

07/02/05 15:53:43: libpcap start failure: pcap_open_live: ioctl: No such device

A.Please increase the number of /dev/bpf*s in your system. (mknod)

Q. I upgraded my VoIPong to a newer version and when I fire voipong I get this error:

cannot get mgmt_client from configfile, shutting down......

A.Please use the new voipong.conf supplied with the newer voipong tarball.