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11.4 CALLS INVOLVING ANALOG SUBSCRIBERS 303When a call setup arrives at the terminating exchange on an ISUP trunk, theexchange always checks whether the called party is compatible with the service indicatedin Par.25 (transmission medium requirement). In this example the called partyis a subscriber and is compatible with the “3.1-kHz audio service.” Exchange Rtherefore proceeds with the call setup.Assuming that S 2 is idle, it rings the subscriber line, connects trunk T 2 to aringing-tone source, and sends an ACM message to exchange Q, which repeats itto exchange P.In the ACM, bits DC, FE, and M of Par.4 (backward call indicators) are setto “subscriber free,” “subscriber,” and “called party has non-ISDN access.” Bits Jand K are copied from bits D and F in Par.14 (forward call indicators) of the receivedIAM and indicate “no interworking encountered” and “ISUP signaling all the way.”Exchange P is therefore aware that signaling is ISUP all the way and that the calledparty is non-ISDN (it may need this information for later call-control actions).Since exchange R receives the calling party number (Par.8) in the IAM, it canprovide CLASS services to the called subscriber (Section 3.5.2).When exchange R receives an answer signal from S 2 , it cuts through the pathbetween T 2 and the called subscriber line and sends an ANM message. When themessage reaches exchange P, it cuts through its forward transmission path and theconversation or data transmission can start.Release of the Connection. Figure 11.4-1 assumes that the called subscriberdisconnects first. Called subscribers have a grace period that allows them to disconnectthe telephone on which they answered the call, and to pick up another telephone,without causing the release of the connection (Section 3.1.1). Therefore,when S 2 disconnects, exchange R sends a SUS message (a REL message wouldinitiate the release of the network connection). On receipt of the message, exchangeP starts a timer with a timeout of, say, 30 s. If S 2 re-answers before the timer expires,exchange R sends a RES (Resume) message, exchange P stops the timer, and the callcontinues. In the example, exchange P has not received a RES message when thetimer expires and initiates the release of the connection.11.4.2 Calls Between a User and a SubscriberWe now consider calls between a user and a subscriber. The call configuration is asin Fig. 11.4-1, except that one party is a subscriber and the other party is an ISDNuser. Since the connection has ISUP signaling all the way, terminating exchange Ralways knows whether the remote (calling) party is a subscriber or an ISDN userfrom bit I of Par.14 (forward call indicators) in the IAM message. Likewise, originatingexchange P knows the type of the remote (called) party from bit M ofPar.4 (backward call indicators) in the ACM message.Since some user actions depend on whether the distant party is a user or a subscriber,a local exchange always informs its user if the distant party is non-ISDN.This is done by including an IE.11 (progress indicator) in the CONN message to
304 ISDN USER PARTthe TE of a calling user, or in the SETUP message to the DSL of the called user. TheTE then presents this information to its user.In calls from a subscriber to a user, the IAMs do not include a Par.1 (access transport),which contains IEs for called TE selection. If the called user has terminals ofseveral types, the only method for the selection of a called TE is by multiple directorynumbers (Section 10.4.3).11.4.3 Connections with Signaling InterworkingFigure 11.4-2 shows two connections in which one trunk has ISUP signaling and theother trunk has multifrequency (MF) signaling (Chapter 4). Connections involvingMF-ISUP interworking can be used for calls originated by a subscriber and for callsoriginated by a user who has requested a speech or 3.1-kHz audio call and has notincluded in the SETUP message information elements that require ISUP signaling.Figure 11.4-2. Connection with ISUP-MF interworking.
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Signaling inTelecommunicationNetwor
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Copyright # 2007 by John Wiley & So
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CONTENTSPreface to the Second Editi
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CONTENTSix8.4 Basic Error Correctio
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CONTENTSxiChapter 16 Transaction Ca
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PREFACE TO THESECOND EDITIONThe fir
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1INTRODUCTION TOTELECOMMUNICATIONST
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1.1 TELECOMMUNICATION NETWORKS 3Fig
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1.2 NUMBERING PLANS 9Local exchange
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1.2 NUMBERING PLANS 11The NANP (for
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1.3 DIGIT ANALYSIS AND ROUTING 13Fi
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1.3 DIGIT ANALYSIS AND ROUTING 15Fi
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1.4 ANALOG TRANSMISSION 17In the IC
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1.4 ANALOG TRANSMISSION 19Figure 1.
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1.4 ANALOG TRANSMISSION 21Figure 1.
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1.5 DIGITAL TRANSMISSION 23land bas
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1.5 DIGITAL TRANSMISSION 25Figure 1
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1.5 DIGITAL TRANSMISSION 27Figure 1
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1.6 SPECIAL TRANSMISSION EQUIPMENT
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1.7 EXCHANGES 35Figure 1.7-2. Local
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1.7 EXCHANGES 37Figure 1.7-4. Excha
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1.8 ACCESS NETWORKS AND LINE CONCEN
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1.10 REFERENCES 41ISDNITUITU-TLATAL
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2INTRODUCTION TO SIGNALING2.1 OVERV
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2.1 OVERVIEW 45networks and in the
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2.1 OVERVIEW 47not involved in a ca
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2.2 STANDARDS FOR SIGNALING SYSTEMS
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2.3 ACRONYMS 51. Communications Sta
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2.4 REFERENCES 537. R. B. Robrock,
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56 SUBSCRIBER SIGNALINGFigure 3.1-1
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58 SUBSCRIBER SIGNALINGFigure 3.2-1
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60 SUBSCRIBER SIGNALING3.2.5 Tones
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62 SUBSCRIBER SIGNALINGHook Status.
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64 SUBSCRIBER SIGNALINGthe low-grou
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66 SUBSCRIBER SIGNALING3.4.3 Tones
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68 SUBSCRIBER SIGNALINGCall Waiting
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70 SUBSCRIBER SIGNALING3.6.1 Caller
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72 SUBSCRIBER SIGNALINGCalled Party
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74 SUBSCRIBER SIGNALINGRRRSSSCSITSL
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76 CHANNEL-ASSOCIATED INTEREXCHANGE
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100 CHANNEL-ASSOCIATED INTEREXCHANG
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5INTRODUCTION TOCOMMON-CHANNEL SIGN
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5.1 SIGNALING NETWORKS 113Figure 5.
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5.1 SIGNALING NETWORKS 115Quasiasso
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5.1 SIGNALING NETWORKS 117Figure 5.
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5.2 SIGNALING LINKS AND SIGNAL UNIT
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5.3 ACRONYMS 125In the final step o
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130 SIGNALING IN ACCESS NETWORKSTim
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132 SIGNALING IN ACCESS NETWORKSCom
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134 SIGNALING IN ACCESS NETWORKSTAB
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136 SIGNALING IN ACCESS NETWORKSFig
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140 SIGNALING IN ACCESS NETWORKSinf
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142 SIGNALING IN ACCESS NETWORKSinf
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148 SIGNALING IN ACCESS NETWORKSC-C
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152 SIGNALING IN ACCESS NETWORKScan
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154 SIGNALING IN ACCESS NETWORKSIDT
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7INTRODUCTION TO SIGNALINGSYSTEM NO
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7.1 SS7 STRUCTURE 159Message Transf
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7.2 IDENTIFICATION OF SIGNALING POI
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7.3 SS7 SIGNAL UNITS AND PRIMITIVES
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7.4 ACRONYMS 165Figure 7.3-3 shows
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8SS7 MESSAGE TRANSFER PARTThe Messa
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8.2 MTP LEVEL 1 1698.1.2 Message Tr
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8.3 OVERVIEW OF MTP LEVEL 2 171In e
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8.3 OVERVIEW OF MTP LEVEL 2 173The
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8.4 BASIC ERROR CORRECTION 175Figur
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8.4 BASIC ERROR CORRECTION 177Figur
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8.5 PREVENTIVE CYCLIC RETRANSMISSIO
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8.6 SIGNALING LINK MANAGEMENT 181In
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8.7 OVERVIEW OF MTP LEVEL 3 183Figu
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8.8 MTP3 SIGNALING MESSAGE HANDLING
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8.9 MTP3 SIGNALING NETWORK MANAGEME
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8.10 ACRONYMS 199H1 Message heading
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9TELEPHONE USER PARTThe Telephone U
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9.2 CALL-CONTROL MESSAGES AND SIGNA
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9.3 BASIC SIGNALING SEQUENCES 211TA
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9.3 BASIC SIGNALING SEQUENCES 213Wh
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9.3 BASIC SIGNALING SEQUENCES 215On
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9.4 TUP SUPPORT OF ADDITIONAL SERVI
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9.4 TUP SUPPORT OF ADDITIONAL SERVI
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9.5 OTHER TUP PROCEDURES, MESSAGES,
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9.5 OTHER TUP PROCEDURES, MESSAGES,
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9.6 VERSIONS OF TUP SIGNALING 2259.
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9.7 ACRONYMS 227ACM Address Complet
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9.8 REFERENCES 229SAOSECSHPSISIFSIM
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232 DIGITAL SUBSCRIBER SIGNALING SY
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Page 269 and 270: TABLE 10.3-3 Information Elements i
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Page 294 and 295: 11ISDN USER PARTThis chapter resume
Page 296 and 297: 11.2 ISUP MESSAGES, FORMATS, AND PA
Page 302 and 303: TABLE 11.2-2 Parameters in ISUP Cal
Page 314 and 315: 11.3 SIGNALING FOR CALLS BETWEEN IS
Page 316 and 317: 11.3 SIGNALING FOR CALLS BETWEEN IS
Page 318 and 319: 11.4 CALLS INVOLVING ANALOG SUBSCRI
Page 322 and 323: 11.5 END-TO-END SIGNALING 305In the
Page 324 and 325: 11.5 END-TO-END SIGNALING 307Figure
Page 326 and 327: 11.6 OTHER SIGNALING PROCEDURES 309
Page 334 and 335: 11.7 SIGNALING PROCEDURES FOR FAILE
Page 336 and 337: 11.8 ISUP SIGNALING IN THE INTERNAT
Page 338 and 339: 11.9 ISUP SIGNALING IN THE UNITED S
Page 340 and 341: 11.10 ACRONYMS 323transferred trans
Page 342 and 343: 11.11 REFERENCES 325SCCP Signaling
Page 344 and 345: 12SIGNALING IN CELLULARMOBILE TELEC
Page 346 and 347: 12.1 INTRODUCTION TO CELLULAR MOBIL
Page 354 and 355: Figure 12.2-1. Transmission of mess
Page 356 and 357: 12.3 INTRODUCTION TO AMPS SIGNALING
Page 358 and 359: 12.3 INTRODUCTION TO AMPS SIGNALING
Page 360 and 361: 12.4 AMPS MESSAGE FORMATS AND PARAM
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12.5 AMPS SIGNALING PROCEDURES 353s
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12.5 AMPS SIGNALING PROCEDURES 355p
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12.6 SIGNALING IN IS-54 CELLULAR SY
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12.7 INTRODUCTION TO THE GSM CELLUL
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12.8 SIGNALING BETWEEN MOBILE AND N
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12.9 LAYER 3 MESSAGES ON THE Um INT
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12.9 LAYER 3 MESSAGES ON THE Um INT
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12.10 ACRONYMS 385FVCGAWGSMIMEIIMSI
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12.11 REFERENCES 3875. Public Land
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390 AIR INTERFACE SIGNALING IN CDMA
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TABLE 13.3-1 Forward CDMA Physical
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14INTRODUCTION TOTRANSACTIONSThe TU
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14.2 SS7 ARCHITECTURE FOR TRANSACTI
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CCIS Common-channel interoffice sig
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466 SIGNALING CONNECTION CONTROL PA
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TABLE 15.2-2 Parameters in SCCP Mes
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16TRANSACTION CAPABILITIESAPPLICATI
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16.1 INTRODUCTION 499Figure 16.1-1.
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16.1 INTRODUCTION 501TABLE 16.1-1 T
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16.1 INTRODUCTION 503TABLE 16.1-4Co
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16.2 TCAP FORMATS AND CODING 505ASN
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16.2 TCAP FORMATS AND CODING 507TAB
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16.2 TCAP FORMATS AND CODING 509Fig
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16.3 TRANSACTION AND INVOKE IDENTIT
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16.4 U.S. NATIONAL TCAP 513TABLE 16
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16.6 ACRONYMS 51516.6 ACRONYMSAC Ap
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17TRANSACTIONS ININTELLIGENT NETWOR
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17.1 INTRODUCTION TO INTELLIGENT NE
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17.2 CALL MODELS AND TRIGGERS 521so
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17.2 CALL MODELS AND TRIGGERS 523is
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17.2 CALL MODELS AND TRIGGERS 525th
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17.2 CALL MODELS AND TRIGGERS 527en
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17.3 AIN MESSAGES AND TRANSACTIONS
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17.4 AIN 0.1 PARAMETERS 535Figure 1
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17.4 AIN 0.1 PARAMETERS 537Bits DC.
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17.4 AIN 0.1 PARAMETERS 539Par.19 P
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17.5 CODING OF DATA ELEMENTS 541Par
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17.6 MESSAGES AND PARAMETERS 543TAB
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17.6 MESSAGES AND PARAMETERS 545TAB
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17.6 MESSAGES AND PARAMETERS 54717.
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17.7 AIN SERVICES 549Snapshot Monit
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17.7 AIN SERVICES 551We assume that
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17.7 AIN SERVICES 553info_analyzed
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17.9 REFERENCES 555GTA Global title
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18INTELLIGENT NETWORKAPPLICATION PA
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18.1 INTRODUCTION 559Figure 18.1-2
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18.2 CALL MODELS AND TRIGGERS 561.
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18.3 CAPABILITY SETS 563CS-2. This
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18.4 INAP SIGNALING 565TABLE 18.4-1
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18.4 INAP SIGNALING 567SACF. MACF a
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18.4 INAP SIGNALING 569TABLE 18.4-5
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18.5 ETSI INAP 571At the end of the
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18.7 REFERENCES 573SSPT_BCSNTCTCAPU
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18.7 REFERENCES 57544. Interface Re
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578 MOBILE APPLICATION PART19.1 INT
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580 MOBILE APPLICATION PARTMSCs (d)
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582 MOBILE APPLICATION PARTASEs in
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584 MOBILE APPLICATION PARTOn recei
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586 MOBILE APPLICATION PARTFigure 1
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588 MOBILE APPLICATION PARTunrecogn
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596 MOBILE APPLICATION PART19.4.3 M
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600 MOBILE APPLICATION PART19.5.3 E
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602 MOBILE APPLICATION PARTPar.4 Au
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604 MOBILE APPLICATION PARTPar.11 D
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606 MOBILE APPLICATION PARTPar.22 S
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608 MOBILE APPLICATION PART19.6.2 E
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614 MOBILE APPLICATION PARTby a “
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616 MOBILE APPLICATION PARTVLR now
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624 MOBILE APPLICATION PARTMAP_COMP
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626 MOBILE APPLICATION PARTThe VLR
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628 MOBILE APPLICATION PARTISDNITUI
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20INTRODUCTION TO PACKETNETWORKS AN
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20.1 PACKET-BASED COMMUNICATION 633
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20.2 THE TCP/IP PROTOCOL SUITE 643F
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20.2 THE TCP/IP PROTOCOL SUITE 645T
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20.2 THE TCP/IP PROTOCOL SUITE 647c
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20.2 THE TCP/IP PROTOCOL SUITE 649s
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20.3 INTRODUCTION TO VoIP 651There
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20.3 INTRODUCTION TO VoIP 653Voice
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20.3 INTRODUCTION TO VoIP 655some V
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20.3 INTRODUCTION TO VoIP 657On the
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20.4 LOWER LAYER PROTOCOLS FOR VoIP
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20.5 ACRONYMS 66520.5 ACRONYMSAAA A
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20.6 REFERENCES 66720.6 REFERENCES1
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21SIGNALING FOR VoIP21.1 INTRODUCTI
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21.2 THE H.323 PROTOCOL 67121.2 THE
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21.2 THE H.323 PROTOCOL 673TABLE 21
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21.2 THE H.323 PROTOCOL 679Recommen
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21.3 THE SESSION INITIATION PROTOCO
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21.4 THE GATEWAY CONTROL PROTOCOL 6
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21.5 THE SIGNALING TRANSPORT (SIGTR
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21.6 THE BEARER INDEPENDENT CALL-CO
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21.7 ACRONYMS 717FSN Forward sequen
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21.8 REFERENCES 7196. Generic Funct
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22SIGNALING IN ATM NETWORKSATM, or
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22.1 INTRODUCTION TO ATM NETWORKS A
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22.1 INTRODUCTION TO ATM NETWORKS A
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22.2 ATM LAYERS AND PROTOCOL STACK
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22.3 LOWER LAYERS 729Figure 22.2-3.
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22.3 LOWER LAYERS 73122.3.2 AAL/SAA
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22.4 INTRODUCTION TO ATM SIGNALING
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22.5 SIGNALING AT THE UNI INTERFACE
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TABLE 22.5-2 Variable-Length Inform
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22.6 THE PNNI PROTOCOL 739Figure 22
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TABLE 22.6-1 Variable-Length Inform
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22.7 THE B-ISUP SIGNALING PROTOCOL
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22.7 THE B-ISUP SIGNALING PROTOCOL
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22.9 ATM ADDRESSING 747administrati
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22.10 ACRONYMS 749IEIETFISUPITUITU-
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22.11 REFERENCES 75123. Private Net
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754 INDEXAddress signalsAsynchrouno
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756 INDEXApplication entity (AE)Int
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758 INDEXBearer services (continued
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760 INDEXCalled Address derivation,
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762 INDEXCellular authentication an
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764 INDEXClassless addressing, Inte
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766 INDEXComponent portion, Transac
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768 INDEXData link connections, Dig
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770 INDEXDigital Subscriber Signali
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772 INDEXError correction (continue
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774 INDEXFour-wire circuits (contin
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776 INDEXHome mobile switching cent
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778 INDEXIntelligent networks (INs)
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780 INDEXIS-95 code-division multip
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782 INDEXLine signals. See also Sup
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784 INDEXMessage acceptance, cellul
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786 INDEXMobile switching centers (
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788 INDEXOptical carrier (OC), sync
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790 INDEXPhysical channels, cdma200
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792 INDEXQ.931 ISDN protocol (conti
Page 811 and 812:
794 INDEXResponse to acknowledgment
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796 INDEXService Indicator Octet (S
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798 INDEXSignaling network manageme
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800 INDEXSignaling System No. 7 (SS
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802 INDEXStored-program controlled
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804 INDEXTandem exchangeinterconnec
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806 INDEXTimeoutspublic office dial
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808 INDEXTrunk groups (TGs) (contin
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810 INDEXVoice over Internet Protoc
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Introduction to Communications Engi
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