I use a router called AVM Fritzbox 7270 with Linux Ubuntu 10.10. The router has a hidden feature to capture network traffic. It allows me to produces .eth files that can be analyzed via wireshark.
In order to generate an audio file I use the following procedure:
In particular the last step does not work to full satisfaction. I get an error message:
can't save reversed direction in a file: File I/O problem!
All I can do is to save audio files using "Channel" as "forward". Both, "reversed" and "both" do not work. From a test call I have 2 audio streams available. Both streams have been converted into audio files using "Channel" as "forward". The first audio file covers only what I said, whereas the second audio file covers only what the other person replied. Of course, I would like to have an audio file that contains the telephone call completely.
I use 2 different DECT telephones, which are only 3 months old:
Siemens Gigaset E36, Codec G.726. Siemens Gigaset SL400H, Codec G.722, G.726.
Is it due to the codecs used by the phones? What can I do?
When looking at Telephony -> VoIPCalls -> Graph there are fat arrows in both directions tagged as "RTP (g711A)" if this helps. Nevertheless, using the "Player" button I can only listen to what the other person said.
Thank you very much indeed for any help.
asked 27 Dec '10, 06:02
edited 28 Dec '10, 03:36