Recommendation Q.1112 PROCEDURES FOR INTERWORKING BETWEEN INMARSAT STANDARD B SYSTEM AND THE INTERNATIONAL PUBLIC SWITCHED TELEPHONE NETWORK/ISDN 1 Introduction This Recommendation presents the detailed procedures for interworking between INMARSAT Standard-B system and signalling systems of the fixed network. For a brief description of INMARSAT Standard-B system, see Appendix I to Recommendation Q.1111. 2 Conversion of information elements Tables 1/Q.1112 to 16/Q.1112 give the relationship between signals of the fixed network signalling systems and the INMARSAT Standard-B system. 2.1 Signalling System No. 7 (TUP) 2.1.1 Table 1/Q.1112 gives the relationship between forward signals in Signalling System No. 7 TUP and messages and information elements sent on the radio path in INMARSAT Standard-B signalling system for shore to ship calls, i.e. interworking of Signalling System No. 7 TUP to INMARSAT Standard-B. In the comment column actions taken by the MSSC are indicated, in particular for signals of TUP which have no equivalent message or information element in INMARSAT Standard-B. Table 2/Q.1112 shows the relationship between messages and information elements in INMARSAT Standard- B signalling system and forward signals in Signalling System No. 7 TUP for ship-to-shore calls, i.e. interworking of INMARSAT Standard-B to Signalling System No. 7 TUP. The signal numbers for forward signals of Signalling System No. 7 TUP are those given in Table A-5bis of Annex A to Recommendations Q.601-Q.608. 2.1.2 Table 3/Q.1112 gives the relationship between messages and information elements in INMARSAT Standard- B signalling system and backward signals in Signalling System No. 7 TUP for shore-to-ship calls, i.e, interworking of Signalling System No. 7 to INMARSAT Standard-B. Backward signals in Signalling System No. 7 TUP generated by the MSSC for unsuccessful shore- to-ship calls are given in Table 3bis/Q.1112. These signals are not related to any specific message or information element received from the ship earth station. Table 4/Q.1112 gives the relationship between backward signals in Signalling System No. 7 TUP and messages and information elements in INMARSAT Standard-B signalling system for ship-to-shore calls, i.e. interworking of INMARSAT Standard-B to Signalling System No. 7 TUP. The comments column indicates specific actions taken by the MSSC. The signal numbers for backward signals of Signalling System No. 7 TUP are those given in Table A-9bis of Annex A to Recommendations Q.601-Q.608. 2.2w Signalling System R2w 2.2.1 Tables 5/Q.1112 and 6/Q.1112 are similar to Tables 1/Q.1112 and 2/Q.1112, respectively, and apply to forward signals in Signalling System R2. Fascicle VI.14 - Rec. Q.1112 1 The signal numbers for forward signals of Signalling System R2 are those of Table A-7 of Annex A to Recommendations Q.601-Q.608. 2.2.2 Tables 7/Q.1112, 7bis/Q.1112 abd 8/Q.1112 are similar to Tables 3/Q.1112, 3bis/Q.1112 and 4/Q.1112, respectively, and appy to backward signals in Signalling System R2. The signal numbers for backward signals in Signalling System R2 are those of Table A-11 of Annex A to Recommendations Q.601-Q.608. 2.3w Signalling System No. 7 (ISUP)w The relationship between forward and backward signals of Signalling System No. 7 ISUP and messages and information elements of INMARSAT Standard-B signalling system is for further study. Tables 9/Q.1112 through 12/Q.1112 are reserved for this purpose. 2.4w Signalling System No. 5w 2.4.1 Tables 12/Q.1112 and 14/Q.1112 are similar to Tables 1/Q.1112 and 2/Q.1112, respectively, and apply to forward signals in Signalling System No. 5. the signal numbers for forward signals in Signalling System No. 5 are those given in Table A-4 Annex A to Recommendations Q.601-Q.608. 2.4.2 Tables 15/Q.1112, 15bis/Q.1112 and 16/Q.1112 are similar to Tables 3/Q.1112, 3bis/Q.1112 and 4/Q.1112, respectively, and apply to backward signals in Signalling System No. 5. The signal numbers for backward signals in Signalling System No. 5 are those given in Table A-8 of Annex A to Recommendations Q.601-Q.608. 2 Fascicle VI.14 - Rec. Q.1112 TABLE 1/Q.1112 Conversion of forward signals in Signalling System No. 7 TUP and INMARSAT Standard-B Signalling System shore-to-ship calls w 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴컴컫컴컴컴컴컴 컴컴컴컴컴� � Signalling System No. 7 � INMARSAT Standard-B � � 쳐컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 Comments � 쿞ignal� Signal name � Message: � � � No. � � info element: value � - � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴� � � � Announcement message: � � � 1 � Address signals � SES number, called terminal � � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴� � 쿙ature of address indicator � - � Interpreted and � � 2 쿻ational significant number � � used by MSSC � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴� � 쿙ature of address indicator � � Interpreted and � � 3 쿶nternational number � - � used by MSSC � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴� � 쿙ature of circuit indicator � � Ignored by � � 4 쿽ne satellite in connection � - � MSSC � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴� � 쿙ature of circuit indicator � � Ignored by � � 5 쿽ne satellite in connection � - � MSSC � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴� � 쿐cho suppressor indicator � � MSSC will insert � � 6 쿽ut-going half-echo � - 쿮cho control device � � 퀂uppressor not included � � if needed � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴� � 쿐cho suppressor indicator � � Interpreted and � � 7 쿽ut-going half-echo � - � used by MSSC � � 퀂uppressor included � � � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴� � 쿎alling party's category � Assignment message: � � � 8-12 쿶ndicator, language digit � service: telephone � - � � � � priority: routine � � Fascicle VI.14 - Rec. Q.1112 3 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴� � 쿎alling party's category � Assignment message: � � � 13 쿶ndicator, ordinary calling � service: telephone � - � � 퀂ubscriber � priority: routine � � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴� � 쿎alling party's category � Assignment message: � � � 14 쿶ndicator, calling � service: telephone � - � � 퀂ubscriber with priority � priority: further study � � 읕컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴� w 4 Fascicle VI.14 - Rec. Q.1112 TABLE 1/Q.1112 w(contd.)w Conversion of forward signals in Signalling System No. 7 TUP and INMARSAT Standard-B Signalling System shore-to-ship calls w 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴컴컫컴컴컴컴컴 컴컴컴컴컴� � Signalling System No. 7 � INMARSAT Standard-B � � 쳐컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 Comments � 쿞ignal� Signal name � Message: � � � No. � � info element: value � � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴� � 쿎alling party's category � � Not applicable � � 15 쿶ndicator, data call � - � � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴� � 16 쿎lear forward signal � Channel release message � � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴� � 17 쿑orward transfer signal � - � Not applicable � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴� � 18 쿎ontinuity proved � - � Interpreted and � � � � � used by MSSC � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴� � 19 쿎ontinuity check failure � Channel release message � - � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴� � 쿎ontinuity check required � - � Interpreted by � � 20 쿽n this circuit � � MSSC � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴� � 쿎ontinuity check not � - � Interpreted by � � 21 퀁equired on this circuit � � MSSC � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴� � 쿎ontinuity check performed � - � Interpreted and � � 22 쿽n previous circuit � � used by MSSC � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴� � 쿞ervice information � - � Interpreted by � � 23 � � � MSSC � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴� � 쿒eneral setup message � - � Interpreted by � � 24 � � � MSSC � � � � � � Fascicle VI.14 - Rec. Q.1112 5 읕컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴� w 6 Fascicle VI.14 - Rec. Q.1112 TABLE 2/Q.1112 Conversion of forward signals in Signalling System No. 7 TUP and INMARSAT Standard-B Signalling System ship-to-shore calls w 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 � 쿔NMARSAT standard-B � Signalling system No. 7 � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컫컴컴컴컴컴� 쿘essage: info element: value � Signal name 쿞ignal No.� 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴� 쿌ddress message: � Address signals: � 1 � 쿬alled number 쿙ature of address indicator� 2 or 3 � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴� 쿝equest message: 쿎alling party's category � � �-priority: routine � indicator, ordinary � 13 � �-service: telephone or 3.1 kHz audio � calling subscriber � � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴� 쿝equest message: 쿎alling party's category � � �-priority: urgency, safety or distress쿶ndicator, calling � 14 � �-service: telephone or 3.1 kHz audio 퀂ubscriber with priority � � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴� 쿎hannel release message � Clear forward signal � 16 � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴� � � Continuity check � � 쿎ontinuity check tone � performed on previous � 22 � � � circuit � � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴컴컨컴컴컴컴컴� w wNotew - Nature of circuit indicator, one satellite in connection (Signal No. 5) is generated by the MSSC. Fascicle VI.14 - Rec. Q.1112 7 TABLE 3/Q.1112 Conversion of backward signals in Signalling System No. 7 TUP and INMARSAT Standard-B Signalling System shore-to-ship calls w 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 � 쿔NMARSAT standard-B � Signalling system No. 7 � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컫컴컴컴컴컴� 쿘essage: info element: value � Singal name 쿞ignal No.� 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴� 쿎ontinuity check tone � AFC: Address complete � 4 � � � subscriber free, charge � � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴� 쿎onnect message � ANC: Answer charge � 16 � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴� 쿎hannel release message � CLB: Clear back � 19 � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴� 쿎all result: cause value: � � � �-user busy � SGB: Subscriber busy � 12 � �-no channel available � CGC: Circuit group congestion � 8 � �-destination out of service � LOS: Line out of service � 13 � �-others � SST: Send special info tone � 14 � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컨컴컴컴컴컴� w 8 Fascicle VI.14 - Rec. Q.1112 TABLE 3bis/Q.1112 Unsuccessful call events and backward signals in Signalling System No. 7 TUP shore-to-ship calls w 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 � 쿔NMARSAT standard-B � Signalling system No. 7 � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴� 쿐vent in INMARSAT system � Signal name � Signal No.� 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴� 쿎ongestion in MSSC � SEC: switching equipment � 7 � � � congestion � � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴� 쿙o satellite channel available � NNC: National network � 9 � � � congestion � � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴� 쿔ncomplete SES number � ADI: Address incomplete � 10 � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴� 쿢nallocated SES number � UNN: Unallocated number � 11 � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴� 쿞ES busy � SGB: Subscriber busy � 12 � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴� 쿎ontinuity test failure � LOS: Line out of service � 13 � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴� 쿞ES absent (no response) � SST: Send special � 14 � � � information tone � � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴� 쿞ES barred for incoming access � SST: Send special � 14 � � � information tone � � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴� 쿞ES unauthorized � SST: Send special � 14 � � � information tone � � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴� w Fascicle VI.14 - Rec. Q.1112 9 TABLE 4/Q.1112 Conversion of backward signals in Signalling System No. 7 TUP and INMARSAT Standard B Signalling System ship-to-shore calls w 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 � � Signalling system No. 7 � INMARSAT standard-B � 쳐컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴� 쿞ignal� Signal name � Message: � Comments � � No. � � info element: value � � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴� � 1 � ADC: Address complete, � - 쿎onnect through � � � charge � � circuit � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴� � 2 � ADN: Address complete, � 쿙o-charge infor- � � � no charge � - � mation used by � � � � � MSSC only � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴� � 3 � ADX: Address complete, � - 쿎onnect through � � � coinbox � � circuit � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴� � 4 � AFC: Address complete, � - 쿎onnect through � � � subscriber free, charge � � circuit � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴� � 5 � AFN: Address complete, � 쿙o-charge infor- � � � subscriber free, no charge � - � mation used by � � � � � MSSC only � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴� � 6 � AFX: Address complete, � - � Connect through � � � subscriber free, coinbox � � circuit � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴� � � � Call result message: � � � 7 � SEC: Switching equipment � international network,� - � � � congestion � switching equipment � � � � � congestion � � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴� � � CGC: Circuit-group � Call result message: � � � 8 � congestion � international network,� - � � � � no channel available � � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴� � � � Call result message: � � � 9 � NNC: National network � remote public network,� - � � � congestion � switching equipment � � � � � congestion � � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴� � � � Call result message: � � � 10 � ADI: Address incomplete 퀁emote public network, � - � � � 쿶nvalid number format � � 읕컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴� w 10 Fascicle VI.14 - Rec. Q.1112 TABLE 4/Q.1112w (contd.)w Conversion of backward signals in Signalling System No. 7 TUP and INMARSAT Standard-B Signalling System ship-to-shore calls w 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 � � Signalling system No. 7 � INMARSAT standard-B � 쳐컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴� 쿞ignal� Signal name � Message: � Comments � � No. � � info element: value � � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴� � � � Call result message: � � � 11 � UNN: Unallocated number 퀁emote public network, � - � � � � unassigned number � � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴� � � � Call result message: � � � 12 � SGB: Subscriber busy 퀁emote public network, � - � � � � user busy � � � � � Call result message: � � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴� � 13 � LOS: line out of service � remote public network, � - � � � � destination out of � � � � � service � � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴� � � SST: Send special � Call result message: � � � 14 � information tone � international network, � - � � � � unspecified � � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴� � � � Call result message: � � � 15 � CFL: Call failure � international network, � - � � � � unspecified � � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴� � 16 � ANC: Answer, charge � Connect message � - � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴� � � � � No-charge � � 17 � ANN: Answer, no charge � Connect message � information � � � � 퀅sed by MSSC only� 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴� � � � � Clearback � � 18 � RAN: Reanswer � � supervision done� � � � � by MSSC � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴� � � � � Clearback � � 19 � CLB: Clearback � Channel release � supervision � � � � � done by MSSC � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴� � 20 � GRQ: General request � - � Interpreted by � � � message � � MSSC � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴� � � Call unsuccessful � Call result message: � � � 21 � access barred � remote public network, � - � � � � unspecified � � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴� � 22 � DPN: Call unsuccessful � - � For further � � 쿭igital path not provided � � study � 읕컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴� w Fascicle VI.14 - Rec. Q.1112 11 TABLE 5/Q.1112 Conversion of forward signals in Signalling System R2 and INMARSAT Standard-B Signalling System shore-to-ship calls w 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴 � � Signalling system R2 � INMARSAT standard-B � � 쳐컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴캑 � 쿞ignal� Signal name � Message: � Comments � � No. � � info element: value � � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴� � � 쿌nnouncement message:� � � 1 � Address signals � SES number, called � - � � � � terminal � � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴� � 2-7 � Language digit, � - � Ignored by MSSC � � � discriminating digit � � � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴� � 쿔-11: Country code indicator,� 쿘SSC will suppress� � � outgoing half-echo � � the country code � � 8 � suppressor required � - � and insert echo � � � � � control device if� � � � � needed � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴� � 쿔-12: Country code indicator,� � The MSSC will � � 9 � no echo suppressor � - � suppress the � � � required � � country code � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴� � 쿔-14: Country code indicator,� � The MSSC will � � 10 � incoming half-echo � - � suppress the � � � suppressor required � � country code � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴� � 11 쿔-14: Incoming half-echo � - � Interpreted by � � � suppressor required � � MSSC � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴� � 쿔I-7: Calling party's � Assignment message: � � � 12 � category, subscriber or� -service: telephone � - � � � operation without � -priority: routine � � � � forward transfer � � � � � facility � � � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴� � 쿔I-8: Calling party's � � � � 13 � category, data � - � Not applicable � � � transmission control � � � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴� � 쿔I-9: Calling party's � Assignment message: � � � 14 � category, subscriber � -service: telephone � - � � � with priority � -priority: for � � � � � further study � � 읕컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴� w 12 Fascicle VI.14 - Rec. Q.1112 TABLE 5/Q.1112 (contd) w 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴 � � Signalling system R2 � INMARSAT standard-B � � 쳐컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴캑 � 쿞ignal� Signal name � Message: � Comments � � No. � � info element: value � � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴� � 쿔I-10: Calling party's � Assignment message: � � � 15 � category, operator � -service telephone � - � � � with forward transfer � -priority: routine � � � � facility � � � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴� � 16 � Clear forward signal � Channel release � - � � � � message � � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴� � 17 � Forward transfer signal � - � Not applicable � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴� � 18 � First digit I-1......I-10 � - � Interpreted and � � � � � used by MSSC � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴� � 19 � Reply to A-14 � - � Not applicable � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴� �20-21 � Reply to A-13 � - � Not applicable � 읕컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴� w TABLE 6/Q.1112 Conversion of forward signals in Signalling System R2 and INMARSAT Standard-B Signalling System ship-to-shore calls w 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 � � INMARSAT standard-B � Signalling system R2 � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴� � Message: info element: value � Signal name � Signal No. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴� � Address message: � Address signals: � 1 � � called number � Country code indicator � 10 � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴� � Request message: � II-7: Calling party's � � � -priority: routine � category, subscriber � 12 � � -service: telephone or � or operator without � � � 3.1 kHz audio � forward transfer facility � � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴� � Request message: � � � � -priority: urgency, safety � II-9: Calling party's � � � or distress � category, subscriber with � 14 � � -service: telephone or � priority � � � 3.1 kHz audio � � � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴� � Channel release message � Clear forward signal � 16 � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴� � Continuity check tone � Not applicable � - � Fascicle VI.14 - Rec. Q.1112 13 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴� w 14 Fascicle VI.14 - Rec. Q.1112 TABLE 7/Q.1112 Conversion of backward signals in Signalling System R2 and INMARSAT Standard-B Signalling System shore-to-ship calls w 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 � � INMARSAT standard-B � Signalling system R2 � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴� � Message: info element: value � Signal name � Signal No. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴� � Continuity check tone � International, subscriber � 13 � � � line free, charge � � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴� � Connect message � Answer signal � 11 � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴� � Channel release message � Clear back signal � 12 � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴� 쿎all result message: cause value: � � � � -user busy � Subscriber line busy � 5 � � -no Channel available � Congestion on the national � 1 � � � network � � � -destination out of service 쿞ubscriber line out of order� 10 � � -others � International, send � 14 � � � special info tone � � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴� w Fascicle VI.14 - Rec. Q.1112 15 TABLE 7bis/Q.1112 Unsuccessful call events and backward signals in Signalling System R2 shore-to-ship calls w 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴 � � INMARSAT standard-B � Signalling system R2 � � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� Signal No.� � Event in INMARSAT system � Signal name � � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴� � � A-4: Congestion on the � 1 � � Congestion in MSSC � national network � � � � or � or � � � B-4: Congestion � 6 � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴� � � A-4: Congestion on the � 1 � � No satellite channel available � national network � � � � or � or � � � B-4: Congestion � 6 � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴� � Incomplete SES number � B-5: Unallocated number � 7 � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴� � Unallocated SES number � B-5: Unallocated number � 7 � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴� � SES busy � B-3: Subscriber line busy � 5 � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴� � Continuity test failure � B-8: Subscriber line � 10 � � � out of order � � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴� � SES absent (no response) � B-2: Send special � 4 � � � information tone � � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴� � SES barred for incoming � B-2: Send special � 4 � � access � information tone � � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴� � SES unauthorised � B-2: Send special � 4 � � � information tone � � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴� w 16 Fascicle VI.14 - Rec. Q.1112 TABLE 8/Q.1112 Conversion of backward signals in Signalling System R2 and INMARSAT Standard-B Signalling System ship-to-shore calls w 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 � � Signalling system R2 � INMARSAT standard-B � 쳐컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴� 쿞ignal� Signal name � Message: � Comments � � No. � � info element: value � � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴� � � � Call result message: � � � 1 � A-4: Congestion on the � remote public network � � � � national network � switching equipment � � � � � congestion � � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴� � 2 쿌-6: Address complete charge,� - � Connect through� � � set up speech conditions � � circuit � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴� � � A-15: Congestion in an � Call result message: � � � 3 � international exchange or � international network,� - � � � at its output � switching equipment � � � � � congestion � � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴� � � B-2: Send special � Call result message: � � � 4 � information tone � remote public network,� - � � � � unspecified � � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴� � � � Call result message: � � � 5 � B-3: Subscriber line busy � remote public network,� - � � � � user busy � � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴� � � � Call result message: � � � 6 � B-4: Congestion � remote public network,� - � � � � switching equipment � � � � � congestion � � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴� � � � Call result message: � � � 7 � B-5: Unallocated number � remote public network,� - � � � � unassigned number � � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴� � 8 � B-6: Subscriber line free, � - � Connect through� � � charge � � circuit � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴� � � B-7: Subscriber line free, � 쿙o-charge infor-� � 9 � no charge � - � mation used by � � � � � MSSC only � 읕컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴� w Fascicle VI.14 - Rec. Q.1112 17 TABLE 8/Q.1112 w(contd.)w Conversion of backward signals in Signalling System R2 and INMARSAT Standard-B Signalling System ship-to-shore calls w 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 커 � Signalling system R2 � INMARSAT standard-B � 쳐컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴캑 쿞ignal� Signal name � Message: � Comments � � No. � � info element: value � � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴캑 � � � Call result message: � � � 10 � B-8: Subscriber line � remote public network,� - � � � out of order � destination out of � � � � � service � � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴캑 � 11 � Answer signal � Connect message 쿎learback super- � � � � � vision by MSSC � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴캑 � 12 � Clear back signal � Channel release � - � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴캑 � 13 � B-1: International, sub- � - � Connect through � � � scriber line free, charge � � circuit � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴캑 � � B-9, B-10: International, � Call result message: � � � 14 � send special information 쿶nternational network, � - � � � tone � unspecified � � 쳐컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴캑 � � � Call result message: � � � 15 � B-11 to B-15 � remote public network,� - � � � � switching equipment � � � � � congestion � � 읕컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴켸 w 18 Fascicle VI.14 - Rec. Q.1112 TABLE 9/Q.1112 Conversion of forward signals in Signalling System No. 7 ISUP and INMARSAT Standard-B Signalling System shore-to-ship calls For further study. TABLE 10/Q.1112 Conversion of forward signals in Signalling System No. 7 ISUP and INMARSAT Standard-B Signalling System ship-to-shore calls For further study. TABLE 11/Q.1112 Conversion of backward signals in Signalling System No. 7 ISUP and INMARSAT Standard-B Signalling System shore-to-ship calls For further study. TABLE 11bis/Q.1112 Unsuccessful call events and backward signals in Signalling System No. 7 ISUP and INMARSAT Standard-B Signalling System shore-to-ship calls For further study. TABLE 12/Q.1112 Conversion of backward signals in Signalling System No. 7 ISUP and INMARSAT Standard-B Signalling System ship-to-shore calls For further study. Fascicle VI.14 - Rec. Q.1112 19 TABLE 13/Q.1112 Conversion of forward signals in Signalling System No. 5 and INMARSAT Standard-B Signalling System shore-to-ship calls w 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴 컴커 � Signalling system No. 5 � INMARSAT standard-B � � 쳐컴컴컴쩡컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� � � Signal� Signal name � Message: info element: � Comments � � No. � � value � � 쳐컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴캑 � 1 � Address signal � Announcement message: � - � � � � -SES number, called terminal� � � � � � � � 2-16 � Language digit � - � Interpreted by � � � � � MSSC � � � � � � � 7 � Discriminating digit O� Announcement message: � - � � � � -service: telephone � � � � � � � � 8 � Start of pulsing KP1 � - � Interpreted by � � � � � MSSC � � � � � � � 9 � Start of pulsing KP2 � - � Interpreted by � � � � � MSSC � � � � � � � 10 � Clear forward message � Channel release � - � � � � � � � 11 � Forward transfer � - � Not applicable � 읕컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴켸 w TABLE 14/Q.1112 Conversion of forward signals in Signalling System No. 5 and INMARSAT Standard-B Signalling System ship-to-shore calls w 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 � � INMARSAT standard-B � signalling system No. 5 � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴� � Message: info element: value � Signal name � Signal No. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴� � Address Message: Called number � Address signals � 1 � � � start of pulsing KP1 or � 8 � � � start of pulsing KP2 � 9 � � � � � � Continuity check tone � Not applicable � - � � � � � � Channel release message � Clear forward � 10 � � � � � � Request message: � Discriminating digit O � 7 � � -priority: routine � � � � -service: telephone or � � � � 3.1 kHz audio � � � � � � � � Request message: � Discriminating digit O � 7 � � -priority: urgency, safety � � � � or distress � � � � -service: telephone or � � � 20 Fascicle VI.14 - Rec. Q.1112 � 3.1 kHz audio � � � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴� w Fascicle VI.14 - Rec. Q.1112 21 TABLE 15/Q.1112 Conversion of backward signals in Signalling System No. 5 and INMARSAT Standard-B Signalling System shore-to-ship calls w 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 � � INMARSAT standard-B � Signalling system No.5 � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴� 쿘essage: info element: value � Signal name � Signal � � � � No. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴� � Continuity check tone � Inform that ST has been sent � 5 � � � � � � Connect message � Answer signal � 2 � � � � � � Channel release � Clear back � 3 � � � � � � Call attempt result: Cause value � � � � -User busy � Busy flash signal � 1 � � -No channel available � Busy flash signal � 1 � � -Destination out of service � Information tone (Note) � - � � -Others � Information tone (Note) � - � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴� w wNotew - May include appropriate recorded announcement. TABLE 15bis/Q.1112 Unsuccessful call events and backward signals in Signalling System No. 5 shore-to-ship calls w 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 � � Events in INMARSAT system � Signalling system No. 5 � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴� � Message: info element: value � Signal name � Signal No. � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴� � Congestion in MSSC � Busy flash � 1 � � � � � � No satellite channel available � Busy flash � 1 � � � � � � SES busy � Busy flash � 1 � � � � � � Incomplete SES number � Information tone (Note) � - � � � � � � Unallocated SES number � Information tone (Note) � - � � � � � � Continuity test failure � Information tone (Note) � - � � � � � � SES absent � Information tone (Note) � - � � � � � � SES barred � Information tone (Note) � - � � � � � � SES unauthorised � Information tone (Note) � - � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴� 22 Fascicle VI.14 - Rec. Q.1112 w wNotew - May include appropriate recorded announcement TABLE 16/Q.1112 Conversion of backward signals in Signalling System No. 5 and INMARSAT Standard-B Signalling System ship-to-shore calls w 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴 � 쿞ignalling system No. 5 � INMARSAT standard-B � � 쳐컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴� 쿞ignal No. � Signal name � Message: info element: value � Comments � 쳐컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴� � 1 � Busy Flash � Call Result: international � � � � � network, unspecified � � � � � � � � 2 � Answer signal � Connect � � � � � � � � 3 � Clear back � Channel release � � � � � � � � 4 � Proceed to send � - � � � � � � � � 5 � Inform that ST has� - � � � � been sent � � � 읕컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴� w 3 Incoming INMARSAT procedures (ship-to-shore calls) Figure 1/Q.1112 contains the procedures for the incoming INMARSAT Standard-B system. This description only includes those aspects of the INMARSAT Standard-B system which have to be implemented for interworking purposes. Internal procedures, such as those required for setting up/clearing the satellite channel, are not shown. This also applies to pre-emption procedures for assigning channels to distress calls. The following details should be noted. 3.1 A call is initiated by a ship earth station (SES), by means of an "access request" message. The coast earth station (CES) begins to set up a channel for the voice communication, upon receipt of this message. The call may be aborted at this point, if the requested service is not available, a satellite circuit is not available, or the calling SES is not authorized. The SES is informed of the call abortion by means of a "call result" message. 3.2 The called address and other information required for call set-up is contained in the service address message received from the ship. Digit analysis (SPITE 12) commences when the service address has been received. This includes also check of address validity, and translation of prefixes to the appropriate destination number. Unsuccessful events, shown as SPITEs 13, 15, 16, 17, 18 and 19, are indicated to the ship earth station by call result message with the cause field set as shown in Table 17/Q.1112. The calling party's category indications used are related to information elements 23 Fascicle VI.14 - Rec. Q.1112 of the request message as shown in Table 18/Q.1112. TABLE 17/Q.1112 Relationship between result of digit analysis and cause field in call result messages w 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� � SPITE � Cause field � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� �13: Digit analysis � Local network, invalid number format � � � � �15: Unallocated number � Local network, unassigned number � � � � �16: Unprovided routing � Local network, no route to destination � � � � �17: Barred routing � Local network, call rejected � � � � �18: Switching equipment � Local network, switching equipment � � congestion � congestion � � � � �19: Circuit group congestion � Local network, no circuit available � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� w Fascicle VI.14 - Rec. Q.1112 24 TABLE 18/Q.1112 Calling Party's category indications used for calls in INMARSAT Standard-B Signalling System w 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 � � INMARSAT information elements � Calling party's category fite � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� � Priority: routine � 17: Subscriber, ordinary call � � Service: telephone or 3.1 kHz audio � � � � � � Priority: urgency, safety or distress � 18: Subscriber, call with � � Service: telephone or 3.1 kHz audio � priority � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� w 3.3 The interworking procedure is activated when countinuity of the satellite circuit has been established. If there is no outgoing circuit available in the MSSC at that time, the satellite circuit is cleared by a call result message with the cause field set to "local network, no circuit available". 3.4 Upon receipt of an address complete indication (BITE 27) or an address complete, subscriber free signal (BITEs 5, 6 or 7) the circuit is through-connected in the MSSC in order to allow supervisory tones to be passed to the ship earth station. 3.5 For unsuccessful call set-up one of the following BITEs may be received from the interworking procedure: BITEs 9 through 17, 19 and 20. The corresponding cause indicated in the call result message sent to the ship earth station should be as shown in Table 19/Q.1112. 25 Fascicle VI.14 - Rec. Q.1112 TABLE 19/Q.1112 Relationship between unsuccessful call BITEs and cause field in call result messages w 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 � � BITE � Cause field � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� � 9: Switching equipment congestion � International network, switching � � � equipment congestion � � � � �10: Circuit group congestion � International network, no channel� � � available � � � � �11: Switching equipment congestion � International network, switching � � or circuit group congestion � equipment congestion � � � � �12: National network congestion � Remote public network, switching � � � equipment congestion � � � � �13: Address complete, national � Remote public network switching � � network congestion � equipment congestion � � � � �14: Address incomplete � Remote public network, invalid � � � number format � � � � �15: Unallocated number � Remote public network, unassigned� � � number � � � � �16: Address complete, subscriber busy � Remote public network, user busy � � � � �17: Address complete, line out of service � Remote public network, � � � destination out of service � � � � �19: Call failure � International network, � � � unspecified � � � � �20: Send special information tone � International network, � � � unspecified � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� w wNotew - See also Tables 4/Q.1112, 8/Q.1112 and 16/Q.1112. 3.6 The connect message is sent when an answer signal is received. 3.7 Clear back from the fixed network is not immediately relayed to the ship earth station. However, clear-back supervision is done by the interworking procedure. Normal clearing takes place when a channel release signal is received from the ship earth station or a clear-back indication (BITE 25) is received from the interworking procedure. BITE 25 is generated when the timer defined in Recommendation Q.118,  4.3.2 expires, (see the various interworking procedures defined below). 3.8 Additional procedures required for interworking with ISUP are for further study. Fascicle VI.14 - Rec. Q.1112 26 FIGURE 1/Q.1112 (sheet 1 of 3) Logic procedures for incoming INMARSAT Standard B signalling (ship to shore calls) 27 Fascicle VI.14 - Rec. Q.1112 FIGURE 1/Q.1112 (sheet 2 of 3) Logic procedures for incoming INMARSAT Standard B signalling (ship to shore calls) Fascicle VI.14 - Rec. Q.1112 28 FIGURE 1/Q.1112 (sheet 3 of 3) Logic procedures for incoming INMARSAT Standard B signalling (ship to shore calls) 29 Fascicle VI.14 - Rec. Q.1112 4 Outgoing INMARSAT procedures (shore-to-ship calls) Figure 2/Q.1112 contains the procedures for the outgoing INMARSAT Standard-B Signalling System. This description only includes those aspects of the INMARSAT Standard-B system which have to be implemented for interworking purposes. Internal procedures, such as those required for setting up and clearing the satellite channel, are not shown. This also applies to preemption procedures for assigning channels to distress calls. The following details should be noted. 4.1 The satellite circuit is established when all digits of the SES number have been received. The MSSC will check if the SES is barred for incoming calls or busy. This may involve information exchange with the Network Coordination Station. Call barring is indicated to the fixed network by use of BITE 20: send special information tone. For ISDN interworking (Signalling System No. 7) the cause may be indicated more precisely. 4.2 Calling party's category indicators are converted to information elements in INMARSAT Standard B signalling system as shown in Table 20/Q.1112. TABLE 20/Q.1112 Conversion of calling party's category indicators to information elements in INMARSAT Standard-B Signalling System w 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 � � Calling party's � Information elements in � � category indicator FITE � INMARSAT � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� � 9-13: Operator, language � � � indication � � � 14: Operator with forward � � � transfer facility � � � 15: Subscriber � Priority: routine � � 16: Subscriber or operator with � Service: telephone � � forward transfer facility � � � 17: Subscriber, ordinary call � � � 18: Subscriber, call with � Priority: for further study � � priority � Service : telephone � � 19: Data call � Priority: routine � � � Service: telephone (3.1 kHz � � � audio) � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� w wNotew - FITEs 9-16 are converted to FITE 17 by the interworking procedure. 4.3 The following events may occur during call set-up: - the SES is busy (BITE 16); this is indicated by the NCS during call set-up; Fascicle VI.14 - Rec. Q.1112 30 - there is no available satellite channel for the requested service; in this case network congestion indication (BITE 12) is provided back to the fixed network; - the continuity test may fail; in this case the subscriber line out of service indication (BITE 17) is used. If the called terminal on the ship is not available (even though the SES could make the connection) or does not support the requested service type, the SES will indicate this by a call result message. This is for further study. 4.4 When a clear forward signal is received from the fixed network, the MSSC will clear the satellite circuit with a channel release message. The ship earth station may clear the satellite circuit by sending a channel release message to the MSSC. When receiving such a message, the MSSC will initiate clearing of the satellite circuit and provide a clear-back signal to the fixed network. Precautions should be taken at the ship earth station in order to avoid unintentional clearing by the user. This could be done by allowing some time (e.g. five seconds) for a reanswer signal to appear before the channel release message is sent to the MSSC. The MSSC may also release the circuit if problems are detected on the radio path. In this case also a clear-back signal should be provided to the fixed network. 4.5 Additional procedures required for interworking with ISUP are for further study. 31 Fascicle VI.14 - Rec. Q.1112 FIGURE 2/Q.1112 (sheet 1 of 3) Logic procedures for outgoing INMARSAT Standard B signalling (shore to ship calls) Fascicle VI.14 - Rec. Q.1112 32 FIGURE 2/Q.1112 (sheet 2 of 3) Logic procedures for outgoing INMARSAT Standard B signalling (shore to ship calls) 33 Fascicle VI.14 - Rec. Q.1112 FIGURE 2/Q.1112 (sheet 3 of 3) Logic procedures for outgoing INMARSAT Standard B signalling (shore to ship calls) Fascicle VI.14 - Rec. Q.1112 34 5 Interworking of incoming INMARSAT to outgoing INMARSAT 5.1 Figure 3/Q.1112 contains the procedures for interworking between incoming and outgoing procedures of INMARSAT Standard-B signalling system. These procedures may also apply for interworking with the INMARSAT Standard-B and Standard-A systems. 5.2 The interworking procedure supervises the answer time (timer t1). The value of timer t1 is two to four minutes in compliance with Recommendation Q.118,  4.3.1. 35 Fascicle VI.14 - Rec. Q.1112 FIGURE 3/Q.1112 (sheet 1 of 2) Interworking of INMARSAT Standard B System with itself Fascicle VI.14 - Rec. Q.1112 36 FIGURE 3/Q.1112 (sheet 2 of 2) Interworking of INMARSAT Standard B System with itself 6 Interworking of Signalling System R2 to outgoing INMARSAT 6.1 Figure 4/Q.1112 contains the procedures for interworking of Signalling System R2 to INMARSAT Standard-B signalling system. 6.2 The ringing tone towards the calling subscriber of the fixed network is intitiated by the interworking procedure. The tone should have characteristics in accordance with Recommendation Q.35. 37 Fascicle VI.14 - Rec. Q.1112 FIGURE 4/Q.1112 (sheet 1 of 2) Interworking of Signalling System R2 to INMARSAT Standard B System Fascicle VI.14 - Rec. Q.1112 38 FIGURE 4/Q.1112 (sheet 2 of 2) Interworking of Signalling System R2 to INMARSAT Standard B System 39 Fascicle VI.14 - Rec. Q.1112 7 Interworking of incoming INMARSAT to Signalling System R2 7.1 Figure 5/Q.1112 contains the procedure for interworking of Signalling System R2 to INMARSAT Standard-B signalling system. 7.2 If the call is destined to a country whose ISC has direct connection to the MSSC (result of SPITE 22, transit connection following?), the country code not included indication (FITE 2) is provided to the outgoing Signalling System R2 procedure. This indication is followed by an echo- suppressor indicator (FITE 4 or FITE 5). FITE 4 is used when an incoming echo control device is not required for the call (e.g. data call); otherwise FITE 5 should be used. For calls requiring a transit ISC the country code indicator FITE 7 or FITE 8 should be used. FITE 7 is used when an incoming echo control device is not required at the remote end and FITE 8 when such a device is to be inserted. See also Recommendation Q.1111 for control of echo control devices. 7.3 The interworking procedure supervises the answer time and the clear-back time (timers t1 and t2, respectively). Timers t1 and t2 take values as follows: t1 = two to four minutes, Recommendation Q.118,  4.3.1 t2 = one to two minutes, Recommendation Q.118,  4.3.2. When timer t1 expires, a forced release message is returned to the incoming INMARSAT procedure (BITE 29). When timer t2 expires, a clear-back message is sent to the incoming INMARSAT procedure (BITE 25). Fascicle VI.14 - Rec. Q.1112 40 FIGURE 5/Q.1112 (sheet 1 of 3) Interworking of INMARSAT Standard B System to Signalling System R2 41 Fascicle VI.14 - Rec. Q.1112 FIGURE 5/Q.1112 (sheet 2 of 3) Interworking of INMARSAT Standard B System to Signalling System R2 Fascicle VI.14 - Rec. Q.1112 42 FIGURE 5/Q.1112 (sheet 3 of 3) Interworking of INMARSAT Standard B System to Signalling System R2 8 Interworking of Signalling System No. 7 TUP to outgoing INMARSAT 8.1 Figure 6/Q.1112 contains the procedures for interworking of Signalling System No. 7 TUP to INMARSAT Standard-B signalling system. 8.2 Activation of the outgoing INMARSAT procedure takes place when a continuity indicator (FITE 24 or FITE 25) is received from Signalling System No. 7. Any digits received during this time are stored by the interworking procedure and then provided to the outgoing INMARSAT procedure when continuity has been indicated. 8.3 The ringing tone towards the calling subscriber of the fixed network is initiated by the interworking procedure. The tone should have characteristics in accordance with Recommendation Q.35. FIGURE 6/Q.1112 (sheet 1 of 2) Interworking of Signalling System No. 7 TUP of INMARSAT Standard B System 43 Fascicle VI.14 - Rec. Q.1112 FIGURE 6/Q.1112 (sheet 2 of 2) Interworking of Signalling System No. 7 TUP of INMARSAT Standard B System Fascicle VI.14 - Rec. Q.1112 44 9 Interworking of incoming INMARSAT to Signalling System No. 7 TUP 9.1 Figure 7/Q.1112 contains the procedures for interworking of incoming INMARSAT Standard-B signalling system to Signalling System No. 7 TUP. 9.2 The interworking procedure provides the following information to the outgoing Signalling System No. 7 procedure in order to initialize the information elements of the initial address message. - continuity check required or not required (FITE 25 or FITE 26); - one satellite link included (FITE 21); - country code indicator: FITE 2 if the call is destined for a country whose ISC has direct connections to the MSSC and FITE 3 in all other cases; - echo control indicator: FITE 4 when an echo control device is not required and FITE 5 when such a device is required at the incoming end. 9.3 The interworking procedure supervises the answer time and the clear-back time (timers t1 and t2, respectively). Timers t1 and t2 take values as follows: t1 = two to four minutes, Recommendation Q.118,  4.3.1 t2 = one to two minutes, Recommendation Q.118,  4.3.2. When timer t1 expires, a forced release message is returned to the incoming INMARSAT procedure (BITE 29). When timer t2 expires, a clear-back message is sent to the incoming INMARSAT procedure (BITE 25). 45 Fascicle VI.14 - Rec. Q.1112 FIGURE 7/Q.1112 (sheet 1 of 3) Interworking of INMARSAT Standard B System to Signalling System No. 7 TUP Fascicle VI.14 - Rec. Q.1112 46 FIGURE 7/Q.1112 (sheet 2 of 3) Interworking of INMARSAT Standard B System to Signalling System No. 7 TUP 47 Fascicle VI.14 - Rec. Q.1112 FIGURE 7/Q.1112 (sheet 3 of 3) Interworking of INMARSAT Standard B System to Signalling System No. 7 TUP Fascicle VI.14 - Rec. Q.1112 48 10 Interworking of Signalling System No. 7 ISUP to outgoing INMARSAT For further study. 11 Interworking of incoming INMARSAT to Signalling System No. 7 ISUP For further study. 12 Interworking of Signalling System No. 5 to outgoing INMARSAT Figure 8/Q.1112 contains the procedures for the interworking of Signalling System No. 5 to the INMARSAT Standard-B signalling system. 13 Interworking of incoming INMARSAT to Signalling System No. 5 Figure 9/Q.1112 contains the procedures for the interworking of INMARSAT Standard-B signalling system to Signalling System No. 5. 49 Fascicle VI.14 - Rec. Q.1112 FIGURE 8/Q.1112 (sheet 1 of 2) Interworking of Signalling System No. 5 to INMARSAT Standard B System Fascicle VI.14 - Rec. Q.1112 50 FIGURE 8/Q.1112 (sheet 2 of 2) Interworking of Signalling System No. 5 to INMARSAT Standard B System 51 Fascicle VI.14 - Rec. Q.1112 FIGURE 9/Q.1112 (sheet 1 of 3) Interworking of INMARSAT Standard B System to Signalling System No. 5 Fascicle VI.14 - Rec. Q.1112 52 FIGURE 9/Q.1112 (sheet 2 of 3) Interworking of INMARSAT Standard B System to Signalling System No. 5 53 Fascicle VI.14 - Rec. Q.1112 FIGURE 9/Q.1112 (sheet 3 of 3) Interworking of INMARSAT Standard B System to Signalling System No. 5 Fascicle VI.14 - Rec. Q.1112 54