Sniff Mode Operation; Pass-Through Mode Operation - Vidicode V-Tap ISDN PRI Manual

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2.1.1 Sniff mode operation

The Sniff mode of operation is the default mode when the V-Tap PRI is

shipped. It means that the V-Tap is a listener to the ISDN line and the

transmitters on the jacks are disabled. A notification message or record-

on-demand is not possible in this mode.

In Sniff mode, the V-Tap PRI can be connected Parallel or In-Line.

There are 7 jumpers involved to set Sniff or Pass-Through mode. These

jumpers can be found on the board. After opening the case (press both

sides firmly), the jumpers must be placed as follows for Sniff mode:

The Pass-Through mode of operation must be set first with the 7

jumpers on the board. The system automatically detects the jumper

settings after restart and will change the web interface with additional

parameters. Pass-Through mode enables the transmitters on the ISDN

jacks and extra features become available, such as the notification

message and record-on-demand with DTMF **.

In Pass-Through mode, the V-Tap PRI can only be connected as In-Line.

The 7 jumpers must be placed as follows for Pass-Through mode:

V-Tap ISDN PRI Manual EN v1.23 Nov 2021

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