The Call Recording system ISDN 2 Voice is a combination of hardware and software running on the Windows platform.
The hardware is connected on the ISDN (digital) subscriber lines and the local area network (LAN), and sends the telephone data to a Windows PC or server.
Next, the ISDN 2 Voice system records all incoming and outgoing telephone conversations on the hard disk of the designated Windows PC. Each call is recorded in a separate file. Besides from the spoken word, call details will be included in the file. Among these are: date/time, in or outbound, dialled number, connected number, number of calling party (if available).
An overview of the actual telephone communications appears on the screen.

All telephone calls are saved as sound files and immediately assigned a file name that indicates the time at which the conversation took place. These file names can be changed later as necessary, for example ‘Jones re: Smith 11 Nov’.

Universally applicable
The ISDN 2 Voice system is connected to the (Euro) ISDN subscriber lines, which means that the brand or type of telephone equipment is not important. The system is compatible with all company switchboards. The only requirement is that ISDN lines are available.
Given that ISDN is offered to users as BRI (ISDN 2 channels) to PRI (ISDN 30 channels), there are several different i2v systems available, which means there is a solution for practically every situation.
Different types of ISDN 2 Voice systems can be combined into an entire unit. For example, when an organisation uses one PRI (ISDN-30) line and two BRI (ISDN-2) lines for telephone communications, the ISDN 2 Voice system can be combined with one i2v-30 and one i2v-8. Or, if an organisation uses six BRI (ISDN-2) lines, then two i2v-8 systems will suffice. Please also refer to “models”

The software package is a Windows application that automatically records all telephone conversations on the hard drive. The files that need to be saved can be categorised and archived just like any other computer file. They can be sent as an attachment to an e-mail, copied into another folder and saved on a CD-ROM. One or more conversations can also be copied to an audio CD for instant playback on any CD player.
After a selected amount of time has elapsed, for example a month, a week or three days, the system automatically deletes all files that do not need to be saved. Conversations that have been moved to a different folder however will be saved indefinitely until they are deleted manually.

Open system
The recorded calls can be played back on all current platforms: Windows, Android, Apple and Linux.
The call details however can only be seen on the supplied accompanied call browser and media player application.

Efficient storage
The sound files that ISDN 2 Voice generates are comprised of the original digital sound data. The data rate is 16.000 Bytes/sec, somewhat less then 1 MByte per minute.
Neither AD/DA conversion nor compression is used.
The conversations are high quality; no compression is used, which means that every detail is preserved. The sound quality is equal to that of the original conversation.
The two parties are reproduced separately, that is in stereo, with one caller on the left channel and the other on the right.  This is especially effective when it comes to understanding conversations in which the callers speech overlap one another.

Connecting to recording system
The ISDN 2 Voice systems are linked up to the recording PC or server using an Ethernet connection. This can be done directly through the PC/server  LAN/Ethernet connection or by using a LAN segment with LAN switch. In that case the hardware is connected to a LAN switch or hub. The recommended minimum LAN speed for the segment in question is 100Mbits/sec. A standard LAN switch can be used to link up multiple systems. Alternatively, a PC/server
can be linked up to the LAN network and to the ISDN 2 Voice system through a second LAN connection (so called dual or multi-homed).