Ma king Ca ll s
29
Step by Step
Trunk Flash
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.
or
Enter the code.
Enter the service code and/or telephone number.
Pr ogr am/Ser vice
*
51=Trunk flash?
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