eyeSDN

• helps you save on phone costs;
• tells - in Normal Mode - whether the Customer Premises Installation (CPI) is doing something;
• supports the installation work;
• helps with error detection.

eyeSDN

• detects data theft;
• reports every activity on the S/T bus;
• is independent of the data protocol;
• does not use any more energy than a Terminal Equipment 1 (TE1);
• hardly uses any energy in Restricted Mode.

Installation:

Be certain that the power supply plug of your NT1 is plugged into the mains outlet, or the S/T bus is otherwise supplied sufficiently with energy for the Normal Mode.

Connect eyeSDN to the S/T-Interface jack, e. g. to an S/T-Interface jack in the NT1 of the Post Office

 
- or -
connect your Terminal Equipment 1 (TE1, e. g. your telephone) and eyeSDN by a duplex jack to the S/T-Interface jack.

eyeSDN does not use more energy than a Restricted Mode compliant Terminal Equipment 1 (TE1), therefore you can attach several eyeSDN at different workstations, where you usually stay.

If the procedure "AlwaysOn/DynamicISDN (AO/DI)" - e. g. T-ISDN @ctive or Notifyer - might be active in your system, then the indicator lights up continuously.

In order to enable the selective ability of eyeSDN, AO/DI must not be active.

Also, without AO/DI, there are sorts of Terminal Equipment 1 (TE1) or Private Branch Exchanges (PBX), which do not leave the S/T bus in peace during inactive phases, so the display lights up continuously (see also inside the FAQ list).

Therefore, buy equipment only with right of return (as for instance with CONRAD), until its compatibility is verified.

Option:

For restricted space available, a flexible version may be necessary. They exist in retail trade at one and a half up to three times the price. Even a 2-fold gender changer may be useful, e. g. CONRAD 261025.

*) On ordering your ISDN access you have selected the type of interface. If you have rented continuous monitoring, or an Extended Rate Interface instead of a Basic Rate Interface, then

- because of the continuous monitoring - the data traffic with the switching center of the telephone service provider stops only in case of fault. Then, eyeSDN is a mere Normal Mode indicator:

It does not distinguish between connection breaks and (perhaps suspicious) connections, but between Normal Mode and Restricted Mode.
**) To the EU until 2005-11-23 only