Recording And Playback - Nortel TDM Recorder User Manual

Call Recording and Playback

Recording and playback

Recording and providing Contacts for playback using Internet Protocol (IP)
are the primary functions of the Nortel TDM Recorder. The interface used
by Viewer for playback is designed to be a uniform HTTP interface that can
be used to retrieve Contact data and metadata for a variety of purposes,
including Enterprise Archive. This section shows how the sub-components
of the Recorder cooperate for recording and playing back a Contact in a
greyfield environment (that is, where there are unify scripts for a mediastore
and the Nortel TDM Recorder). The Contact may be located either on the
Recorder's local call buffer or on a tape or DVD on the Recorder server. This
information is described in the following topics:
Capturing a Contact (recording)
Alternative methods of capturing a contact
Replaying a Contact located on the Recorder's local Call Buffer
(Playback)
Replaying a Contact located on a Recorder's tape or DVD (Playback)
Capturing a Contact (recording)
Capturing a Contact is initiated when the Unify Script receives an event that
indicates that a monitored extension or trunk channel has begun a call. The
script issues a start recording (
which replies asynchronously when it has started recording.
When the Unify Script receives a later event indicating that the call has
ended, it issues a stop recording (
which again responds asynchronously. Inside the recorder after recording
has stopped a series of events occur that cause the metadata to be uploaded
to the Calls database and the voice data and its metadata to be archived to
the Media database and to an external storage device. This is described in
the following steps and illustrated in the following diagram:
50
startRecord()
stopRecord()
) message to the Recorder
) message to the recorder,
Nortel TDM Recorder
Standard 3.0