Method and apparatus for Voice-over-IP call recording

A system to passively record information associated with a VoIP communication session on a computer network comprising:

• a tapping device to passively tap the computer network to obtain signaling information and media information without establishing a voice session with a recording device, the media information being in a first format;
• a processing device to transcode the media information from the first format to a second format, the processing device separating the signaling information from the media information;
• and
• a storage device to store the transcoded media information in the second format, thereby monitoring information associated with a VoIP communication session on a computer network without requiring modification to the computer network and without impairing operation of the computer network, the first and second formats being digital formats.

A method of passively recording information associated with a VoIP communication session on a computer network comprising:

• tapping, by a tapping device, the computer network passively to obtain signaling information and media information without establishing a voice session with a recording device, the media information being in a first format;
• separating the signaling information from the media information;
• transcoding the media information to a second format;
• and storing the transcoded media information in the second format, thereby monitoring information associated with a VoIP communication session on a computer network without requiring modification to the computer network and without impairing operation of the computer network, the first format comprising at least one of G.711, A-law PCM, mu-law PCM, linear PCM, G.723.1, G.727, G.729a, G.729b, GSM610, GSM-MS, NetCoder, and Oki-ADPCM, the second format comprising at least one of G.711, A-law PCM, mu-law PCM, linear PCM, G.723.1, G.727, G.729a, G.729b, GSM610, GSM-MS, NetCoder, and Oki-ADPCM, the first and second formats being digital formats.

A method of passively recording information associated with a VoIP communication session on a computer network comprising:

• tapping, by a tapping device, the computer network passively to obtain signaling information and media information without establishing a voice session with a recording device, the media information being in a first format;
• separating the signaling information from the media information;
• transcoding the media information to a second format;
• storing the transcoded media information in the second format, thereby monitoring information associated with a VoIP communication session on a computer network without requiring modification to the computer network and without impairing operation of the computer network;
• determining whether an internet protocol (IP) address associated with the media information matches an IP address associated with the communication session, the first and second formats being digital formats;
• and
• discarding the media information in response to determining that the IP address associated with the media information does not match the IP address associated with the communication session.

A system to passively record information associated with a VoIP communication session on a computer network comprising:

• a tapping device to passively tap the computer network to obtain signaling information and media information, the media information being in a first format without establishing a voice session with a recording device;
• a processing device to transcode the media information from the first format to a second format, the processing device separating the signaling information from the media information;
• and
• a storage device to store the transcoded media information in the second format, thereby monitoring information associated with a VoIP communication session on a computer network without requiring modification to the computer network and without impairing operation of the computer network, the first format comprising at least one of G.711, A-law PCM, mu-law PCM, linear PCM, G.723.1, G.727, G.729a, G.729b, GSM610, GSM-MS, NetCoder, and Oki-ADPCM, the second format comprising at least one of G.711, A-law PCM, mu-law PCM, linear PCM, G.723.1, G.727, G.729a, G.729b, GSM610, GSM-MS, NetCoder, and Oki-ADPCM, the first and second formats being digital formats.

A system to passively record information associated with a VoIP communication session on a computer network comprising:

• a tapping device to passively tap the computer network to obtain signaling information and media information, the media information being in a first format without establishing a voice session with a recording device;
• a processing device to transcode the media information from the first format to a second format, the processing device separating the signaling information from the media information;
• and
• a storage device to store the transcoded media information in the second format, thereby monitoring information associated with a VoIP communication session on a computer network without requiring modification to the computer network and without impairing operation of the computer network, the processing device determining whether an internet protocol (IP) address associated with the media information matches an IP address associated with the communication session, the processing device discarding the media information in response to determining that the IP address associated with the media information does not match the IP address associated with the communication session, the first and second formats being digital formats.