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Dialogic 05-0867-005 - page 118

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cc_GetDChanState( ) retrieves the status of the D channel

106

Error Code Description

ERR_ISDN_LIB | E_ISBADIF Bad interface number

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See Also

• cc_SetDChanCfg( )

Contents

Main COPYRIGHT NOTICE Table of Contents Page Page Page Page Page List of Tables Page List of Figures Page 1. How To Use This Guide 1.1. Products Covered by this Guide 1.2. Organization of this Guide Page 2. Introduction to Dialogic ISDN Products 2.1. The Basic Rate Interface Page Page Page 2.2. The Primary Rate Interface Page Page Page 2.3. Dialogic ISDN Protocol Support Page 3. ISDN Technology Overview 3.1. Signaling 3.2. Framing 3.3. ISDN Call Control States Page Page LEGEND Inbound Outbound Page Page Page Page Page Page Page Page Page Page 4. ISDN Function Overview 4.1. ISDN Library Function Categories Page Page Page Page Page Page Page Page Page Page 4.2. API Functions and Supported ISDN Technologies Page Page Page Page 5. ISDN Function Reference 5.1. Function Description Format Page 5.2. Programming Conventions 5.3. Function References: CRNs, CRVs, and Line Device Handles 5.4. Interpreting Function Call Failures Page Page responds to an incoming call request cc_AcceptCall( ) 51 None Page Page cc_AnswerCall( ) accepts a connection request from the remote end 54 This function is called only after an inbound call has been detected. Page Page Page cc_CallAck( ) send the first response to an incoming call 58 If the function returns a value < 0 to indicate failure, use the cc_CauseValue( ) ccerr.h, isdnerr.h and isdncmd.h. Page Page sends a PROGRESS message to the network cc_CallProgress( ) 61 Page Page Page retrieves the state of a call cc_CallState( ) 65 If the function returns < 0 to indicate failure, use the cc_CauseValue( ) function isdnerr.h and isdncmd.h. Error codes from the cc_CallState( ) function include the following: Page Page cc_CauseValue( ) retrieves the error/cause code of a failure 68 Page Page closes a previously opened line device cc_Close( ) 71 If the function returns < 0 to indicate failure, use the cc_CauseValue( ) function Page Page cc_CRN2LineDev( ) matches a CRN to its line device handle 74 If the function returns < 0 to indicate failure, use the cc_CauseValue( ) function Page Page Page cc_DropCall( ) allows the application to disconnect a call 78 Page Page retrieves Automatic Number Identification (ANI) information cc_GetANI( ) 81 If the function returns < 0 to indicate failure, use the cc_CauseValue( ) function Error codes from the cc_GetANI( ) function include the following: Page Page cc_GetBChanState( ) retrieves the status of the B channel 84 Page Page gets the call charge information cc_GetBilling( ) 87 Page Page Page gets the information elements associated with the CRN cc_GetCallInfo( ) 91 Page Page cc_GetCES( ) retrieves the connection endpoint suffix 94 Page Page gets the last channel information cc_GetChanId( ) 97 cc_GetChanId( ) gets the last channel information 98 Page Page Page cc_GetCRN( ) retrieves the call reference number for the event 102 Page Page retrieves the status of the D channel cc_GetDChanState( ) 105 If the function returns a value < 0 to indicate failure, use the cc_CauseValue( ) Error codes from the cc_GetDChanState( ) function include the following: Page Page Page Page cc_GetDLinkState( ) retrieves the logical data link state 110 If the function returns a value < 0 to indicate failure, use the cc_CauseValue( ) Error codes from the cc_GetDLinkState( ) function include the following: Page Page gets the dialed number information string cc_GetDNIS( ) 113 Page Page Bitmask Type Action Default Setting retrieves the current ISDN event mask cc_GetEvtMsk( ) 117 Page Page cc_GetFrame( ) retrieves the frame 120 Page Page gets information elements associated with a line device cc_GetInfoElem( ) 123 Network Facility IE using the cc_GetCallInfo( ) function is no longer supported. Page Page Page Page Page collects more digits via overlap receiving cc_GetMoreDigits( ) 129 Page Page cc_GetNetCRV( ) retrieves the network call reference value 132 Page Page Page cc_GetNonCallMsg( ) retrieves call data for a GLOBAL or NULL CRN event 136 Page Page Table 21. cc_GetParm( ) Parameter ID Definitions Define Description Possible return values Page Page Page Page Page Page cc_GetParmEx( ) retrieve parameters containing variable data 146 If the function returns < 0 to indicate failure, use the cc_CauseValue( ) function Error codes from the cc_GetParmEx( ) function include the following: Page Page retrieves the service access point ID cc_GetSAPI( ) 149 Page Page Page gets the signaling information of an incoming message cc_GetSigInfo( ) 153 Network Facility IE using the cc_GetCallInfo( ) function is no longer supported. cc_GetSigInfo( ) gets the signaling information of an incoming message 154 Page Page gets the established attribute for the line device cc_GetUsrAttr( ) 157 Page Page cc_GetVer( ) retrieves the firmware version number 160 If the function returns < 0 to indicate failure, use the cc_CauseValue( ) function See Also None Page cc_HoldAck( ) accept a hold request from remote equipment 162 Page Page place an active call on hold cc_HoldCall( ) 165 Page Page cc_HoldRej( ) reject a hold request from remote equipment 168 Page Page Page cc_MakeCall( ) request a connection to make an outgoing call 172 request a connection to make an outgoing call cc_MakeCall( ) 173 Call Waiting Example (Windows Only): cc_MakeCall( ) request a connection to make an outgoing call 174 Page Page Page Page Page Page Page Page Page cc_ReleaseCall( ) release all internal resources 184 Page Page release all Dialogic ISDN resources cc_ReleaseCallEx( ) 187 The cc_ReleaseCallEx( ) function is not supported for LINUX applications. cc_ReleaseCallEx( ) release all Dialogic ISDN resources 188 Page Page Page cc_ReqANI( ) returns the caller ID 192 If the function returns < 0 to indicate failure, use the cc_CauseValue( ) function Error codes from the cc_ReqANI( ) function include the following: Page Page Page cc_Restart( ) resets the channel to Null state 196 Page Page interprets the function return code cc_ResultMsg( ) 199 Page Page cc_ResultValue( ) gets an error/cause code 202 Page Page accept a request to retrieve a call from hold cc_RetrieveAck( ) 205 Page Page cc_RetrieveCall( ) retrieve a call from the Hold state 208 Page Page reject a request to retrieve a held call cc_RetrieveRej( ) 211 Page Page Page Page cc_SetBilling( ) Vari-A-Bill services Possible error codes from the cc_SetBilling( ) function include the following: 216 Page Page sets the default calling party number cc_SetCallingNum( ) 219 Page Page Page Page Page Page cc_SetDChanCfg( ) sets the configuration of the Digital Subscriber Loop 226 If the function returns a value < 0 to indicate failure, use the cc_CauseValue( ) Error codes from the cc_SetDChanCfg( ) function include the following: Page Page Page Page Page Page Page Bitmask Type Action Default Page Page Page Page sets additional information elements cc_SetInfoElem( ) 239 Page Page cc_SetMinDigits( ) sets the minimum number of digits to be collected 242 Page Page Table 26. cc_SetParm( ) Parameter ID Definitions Define Description Possible return values Page Page cc_SetParm( ) sets the default channel parameters 248 If the function returns < 0 to indicate failure, use the cc_CauseValue( ) function Error codes from the cc_SetParm( ) function include the following: Page Page Page cc_SetParmEx( ) set parameters requiring variable data to be passed 252 Page Page sets the user attribute cc_SetUsrAttr( ) 255 Page Page cc_SndFrame( ) sends a frame to the data link layer 258 Page Page Page cc_SndMsg( ) sends a non-Call State related ISDN message to the network 262 Page Page Page cc_SndNonCallMsg( ) sends a non-call related ISDN message 266 If the function returns a value < 0 to indicate failure, use the cc_CauseValue( ) Possible error codes from the cc_SndNonCallMsg( ) function include the following: Page Page start the capture of all D channel information cc_StartTrace( ) 269 Page Page Page Page Page Page cc_StopTrace( ) stops the trace 276 Page Page Page cc_TermRegisterResponse( ) sends a response for CCEV_TERM_REGISTER 280 sends a response for CCEV_TERM_REGISTER cc_TermRegisterResponse( ) 281 If the function returns a value < 0 to indicate failure, use the cc_CauseValue( ) Error codes from the cc_TermRegisterResponse( ) function include the following: Page Page Page redefines a call progress tones attributes cc_ToneRedefine( ) 285 This function is not supported for the BRI/2 board or for PRI protocols. cc_ToneRedefine( ) redefines a call progress tones attributes 286 Page Page Page Page Page Page 6. Data Structure Reference 6.1. CC_RATE_U 6.2. channel_id 6.3. DCHAN_CFG 296 NOTE: Page Page Page = Fixed TEI assigning Term NOTE: cc_SetParmEx( ) 6.4. DLINK 6.5. DLINK_CFG 6.6. IE_BLK 6.7. L2_BLK 6.8. MAKECALL_BLK Page Table 37. MAKECALL_BLK Parameter ID Definitions Page Page Page Page Page Section 6.2. channel_id Page 6.9. NONCRN_BLK 6.10. PARM_INFO 6.11. SPID_BLK 6.12. TERM_BLK Page 6.13. TERM_NACK_BLK 6.14. ToneParm 6.15. USPID_BLK 6.16. USRINFO_ELEM 6.17. WAITCALL_BLK Page 7. ISDN Events and Errors 7.1. Event Categories Table 47. Termination Events cc_ReleaseCallEx( ) Page Page Page Page Page Page Page Page Page Page 7.2. Error Handling Page Page Page Page Page Page Page Page Page Page 8. Application Guidelines 8.1. General Guidelines 8.2. Handling Errors, Events and Alarms Page 8.3. Programming Considerations - PRI and BRI Page Page Page Page 8.4. Programming Considerations - BRI/SC Only Page Page 8.5. Diagnostic Tools (The DialView Suite) Page Page 8. Application Guidelines 363 Table 59. ISDTRACE Example File Page 8. Application Guidelines 365 Page Appendix A - Call Control Scenarios BRI Channel Initialization and Start Up (User Side) 369 BRI Channel Initialization and Start Up (Network Side) Application Device Driver State Firmware User to- Network PRI Channel Initialization and Start Up Normal Call Establishment and Termination Page Page Page Page Host-controlled disconnect: Parameter 24 in the *.prm file = 01 Page Application initiated call (outbound call) Page Page Page Page Host-controlled disconnect: This is the default setting for parameter 24 in the *.prm file Page Call Rejection Outgoing call rejected by the network Incoming call rejected by the application Page Page Page Page Page Page Page Initiation of Hold and Retrieve (BRI and PRI DPNSS/Q.SIG Protocols Only) Page Page Network Facility Request or Service Page Synchronous Programming: Call disconnected by application Two B Channel Transfer (TBCT) Figure 7. TBCT Invocation with Notification (Both Calls Answered) Figure 8. TBCT Invocation with Notification (Call 1 Answered/Call 2 Alerting) Users A & B connected Users A & B disconnected 2. Retrieving the Networks Call Reference Value: 4. Processing the Network response to TBCT request: Page 5. Processing the Network notification for disconnecting transferred calls: Non-Call Associated Signaling (NCAS) Page NCAS call connected 2. Setting up the MAKECALL_BLK for an NCAS call: NCAS call connected Page Appendix B - DPNSS Call Scenarios Executive Intrusion - Normal Executive intrusion - with prior validation Local diversion - outbound Local diversion - inbound 418 Remote diversion - outbound Step Dialogic API Action/Result Dialogic Event Remote diversion - inbound Transfer Page Virtual call -outbound Virtual call - inbound Page Appendix C - IEs and ISDN Message Types for DPNSS Information Elements for cc_GetCallInfo( ) and cc_GetSigInfo( ) Page Text Display IE: Network Specific Indications (NSI) IE: NSI IE fields 4 and 5 can be repeated multiple times, as needed. Extension Status IE: Page Information Elements for cc_SetInfoElem( ) Diversion IE: Diversion Bypass IE: Inquiry IE: Extension Status IE: Virtual Call IE: Text Display IE: Network Specific Indications (NSI) IE: NSI IE fields 5 and 6 can be repeated multiple times, as needed. DPNSS Message Types for cc_SndMsg( ) The following tables describe the ISDN message types that support the DPNSS protocol. SndMsg_Divert: SndMsg_Intrude: SndMsg_NSI: NSI IE fields 5 and 6 can be repeated multiple times as needed. SndMsg_Transfer: SndMsg_Transit: Page Appendix D BRI Supplemental Services Page Page Page Page Page Appendix E - Establishing ISDN Cable Connections Ordering Service Establishing Connections to an NTU Page Appendix F - Related Publications Page Glossary Page Page Page Page Page Index 5 A B C Page Page Page D E F G H I L M N O P Q R S T U V W