Send Trunk Flash (Not For Hipath 500) - Siemens HiPath 500 User Manual

Enhanced phone functions
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*51=Trunk flash?
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Send trunk flash (not for HiPath 500)

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.
Prerequisite: You have set up an external connection.
N
Press the key shown.
Select and confirm the option shown.
j
Enter the service code and/or telephone number.