Vorlage 3a

Technical requirements for the handover interfaces for the execution of telecommunications surveillance

Clause Selection of ETSI options for Additional requirements ETSI TS Switzerland

133 108

V13.4.0

5.3.2 Control information for circuit switched Content of Communication

The terminal end point of PTSS replies to a SETUP message

immediately with a CONNECT

message, i.e. without any ALERTING message.

5.3.3 Security requirements at the interface port HI3

ISDN Service specifications CLIP and CUG does not need to be implemented. COLP must be used for creating CC links to PTSS.

5.3.3.3 Authentication

A special authentication procedure within the ISDN B Channel or within the Subaddress is not used.

5.4.4 Multi party calls – general 5.5.2, principles

5.5.3, Only option A is available and must 5.5.11 be used.

5.5.12.1.1 Call Diversion by target, CC links

For CFNR, UDUB, CD and partial rerouting, option 2 (with CONTINUE-Record) must be implemented.

5.5.3 Call Hold/Retrieve

If an active call is put on hold, its CC link shall stay intact and the signal from the held party shall be switched through to the LEMF. If the target sets up a new call, while one call is on hold, this call shall be treated as a normal originating call (additional CC link). ETSI TS 133 108 V13.4.0 §5.5.3.1 applies. CC links shall stay intact and the signal from the held party shall be switched through.

5.5.4.1 Explicit Call Transfer (ECT)

For explicit call transfer, Option 2 must be implemented. This means, that the transferred call must not be intercepted.

5.5.15 User-to-User Signalling (UUS)

UUS service data will be delivered as See points 5.3.1 in this Table. IRI data.

Annex A: HI2 delivery mechanisms and procedures A ROSE/FTP

FTP must be used for transferring IRI data over HI2-interface; ROSE is not allowed.