DR-Link interface allow for communication between TRX recorders and Alcatel OXE PBXs using CTI-enabled environment. The solution enables
to record calls at all Alcatel OXE lines, which are included in CSTA monitoring. Active call recording can be used for all types of telephone sets,
except virtual station (i.e. without physical address).
Implementation of the solution requires the Alcatel PABX to be equipped with additional 2Mbit/s interface board (PCM/2). Each PCM/2 trunk
board allows for recording up to 30 calls at the same time. Another PCM/2 board expands this pool for consecutive 30 voice connections.
Call-related events information are sent to recorder via DR-Link interface. For each monitored station, Alcatel OXE causes the audio stream is replicated
and put in particular timeslots of dedicated PCM2 board, which is connected to the TRX recorder.
Because the voice stream can be redirected from RTP packets into TDM timeslots on dedicated PCM2 board, DR-Link integration can be used for recording calls from IP based extensions or trunks.
This solution is based on CSTA and does not require any additional hardware equipment on the PBX side. TRX recorder is connected to all monitored (analogue or digital) extensions or trunks via parallel tapping lines. The audio stream is captured directly from recorded phone or trunk lines. All call-related events information are retrieved from Alcatel TSAPI Server (Telephony Server Application Programming Interface).
This type of CTI integration does not allow for recording calls at IP based extension or IP based trunks.
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