Avamprogetto 2b

Table 3: Cause values and location in case of rejection of set-up of a CC link by the LEMF ITU-T Q.850 (05/98) Failure Cause Definition Location caused value by

1 Unallocated Number user (0000) LEMF 17 User Busy user (0000) LEMF 18 No User Responding user (0000) LEMF 19 No Answer from User (user user (0000) LEMF alerted)

20 Subscriber Absent user (0000) LEMF 21 Call Rejected user (0000) LEMF 22 Number Changed user (0000) LEMF 27 Destination Out of Order user (0000) LEMF 31 may be different at PTSS side Normal, Unspecified user (0000) LEMF since the ISDN delivery network

translates any cause value not

appearing in this Table into 31

34 No Circuit/Channel Available user (0000) LEMF 41 Temporary Failure user (0000) LEMF 42 Switching Equipment user (0000) LEMF Congestion

44 at PTSS side only, appears as Requested Circuit/Channel user (0000) LEMF

17 or 34 at MD side N/A

47 Resource Unavailable, user (0000) LEMF Unspecified

65 Bearer Capability Not user (0000) LEMF Implemented

88 Incompatible Destination user (0000) LEMF

Figure 26 and Figure 27 show abnormal releases of a CC link set-up. The MD repeats the connection set-up attempts a specific number of times in accordance with Annex 1.