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uses ROSE to invoke specific supplementary service at the remote PINX. These ROSE operations are coded in a Q.931 FACILITY info element. Here a list of QSIG opcodes:

List of ISDN standards

* ETS 300 052 - Multiple Subscriber Number
* ETS 300 055 - Call Waiting
* ETS 300 092 - Calling Line Identification Presentation (CLIP)
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