Technical data

Basic Information about TeleService
TeleService V6.1 Service Software for SIMATIC S7 and C7
A5E00921336-01
3-17
3.10 Useful Information on Callback
The costs of a phone connection are normally borne by the caller that sets up the
TeleService session.
TeleService can, however, be used so that after a short initial connection, the
modem connection is established again in the opposite direction, in other words
initiated by the TS Adapter (callback). In this case, the plant operator bears the
costs for the callback.
There are two callback variants in TeleService:
1. Callback to a number specified during connection establishment.
2. Callback to a number stored on the TS Adapter.
Callback to a number specified during connection establishment
1. Open the "Set PG/PC Interface" dialog box.
2. Select the "TS Adapter" or "TS Adapter IE" interface.
3. Click "Properties", open the "Local Modem" tab and specify the location from
where you wish to configure the remote connection.
4. Activate the "Connection establishment with callback" check box. As long as
this box is checked, the dialog "Log onto TS Adapter" opens when a
connection is established and displays a callback number suitable for the
location that you can, if necessary, correct, confirm, or reject.
Note
This procedure is suitable when the costs for the modem connection will be borne
by the plant and when the callback number is not fixed and different recipients can
be called back. This is particularly suitable for mobile users.
Callback to a number stored on the TS Adapter
• Store a callback number on the TS Adapter and familiarize yourself with the
access protection for the TS Adapter I/II and the TS Adapter IE.
Note
This method represents the highest level of security. The danger with this method
is that if the number stored on the TS Adapter is not correct, it will no longer be
possible to reach the TS Adapter over a modem connection. The device can then
only be put back into operation by changing the parameter settings locally (on site).