Siemens 500 economy User Manual

To activate ISDN-type services and features through the 
network carrier’s analog trunks or those of other com-
munications platforms (such as "consultation hold"), you 
must send a signal to the trunks before dialing the ser-
vice code or telephone number.

Precondition: You have set up an external connection.

Press the key. The LED lights up.

Select and confirm.

F>:

Enter the code.

D

Enter the service code and/or telephone number.

Program/Service

*