Vidicode designed a special Pass Through mode for T1 lines. Our Call Recorders and Fax Servers for T1 are connected between the incoming network and the local telephone system, usually a PBX. These devices add new functionality to the line and at the same time leave the existing functionality untouched.

Pass Through mode

Our T1 devices can be connected in Pass Through mode. They are connected between the network and the PBX. This means that all these devices must have an IN and an OUT connection. On one side, towards the public network, they must emulate a PBX and on the other side, towards the PBX, they must emulate the public network.

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Call Recorder

The Call Recorder in Pass Through mode has some more freatures besides storing recordings. It can insert a notification message into the conversation. Secondly it can do record on demand, by using DTMF codes from the PBX side. The third trick is the number filter; the numbers send out by the PBX can be hidden to the rest of the world. In the case of the Call Recorder, the line is almost left untouched. Some small modifications are made in the data stream, only when this is needed.

Fax Server

As said before the Fax Server  is always operating in Pass Through mode. It has more influence on the line. It takes control over the line at any time. Default, just out of the box, the server will just pass all the data. After programming an internal number list, ti starts monitoring the line. If an incoming call arrives with a number that matches the list, the Fax Server takes that call and starts receiving a fax.

The Fax Server can initiate outgoing calls by itself when sending faxes. A free line or channel is chosen and the fax is sent.

The Fax Server is capable of handling the T1 line in Stand Alone mode. This means that a PBX behind the server is not necessary. The line is completely handled by the Fax  Server.