> For the complete documentation index, see [llms.txt](https://prosbcdocs.telcobridges.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://prosbcdocs.telcobridges.com/telecom-references/parameter-reference/isup.md). # ISUP parameters ISUP user parts, circuits and call setup. 87 parameters. ## A | Parameter | Description | | ------------------------ | ------------------------------------------------------------------------ | | **Allow group messages** | Group messages (block, reset) are allowed. | | **Allow pass on** | Pass on unknown messages to user application. | | **Available Test** | Whether or not to do a circuit validation test upon reception of RESUME. | ## C | Parameter | Description | | --------------------------------- | ---------------------------------------------------------------------------------------------------- | | **Call Control** | The Call Control parameter is used to set a call control method for ISUP CIC groups. | | **Call modification allowed** | Call modification request (CMR) is allowed. | | **Cause Release Location** | Cause release location when ISUP is sending REL automatically. | | **CIC Mapping** | The CIC Mapping parameter is used to link the CIC number with the timeslot. | | **Cic Options** | \*ANSI international: Modify the maximum number of circuits to block,unblock or query from 24 to 32. | | **Circuit reservation ack timer** | Circuit reservation ack (CRA) timer. | | **Circuit reservation timer** | Circuit reservation (CRM) message timer. | | **Circuit Validation Timer** | Used by ANSI88, 92, 95, and BELLCORE | ## D | Parameter | Description | | ---------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------- | | **Default Nature of Address When Unspecified** | The Default Nature of Address When Unspecified parameter is used to assign a default address value in ISUP user parts, when unspecified. | | **Default Numbering Plan When Unspecified** | The Default Numbering Plan When Unspecified parameter is used to assign a default numbering plan in ISUP user parts, when unspecified. | | **DPC Status Query Timer** | Query DPC state from MTP3 or M3UA layer when the ISUP interface is unavailable. | ## E | Parameter | Description | | -------------------------------- | -------------------------------------------------------- | | **Exit (EXM) timer** | Exit (EXM) message to be sent timer. | | **Explicit Call Transfer timer** | Explicit Call Transfer - wait for loop prevention timer. | ## F | Parameter | Description | | --------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------- | | **Final release response timer** | Waiting for final release response timer. | | **First CIC** | The First CIC (Circuit Identification Code) parameter is used to set a value for the first Circuit Identification Code in an ISUP CIC group. | | **First Group Msg Timer** | This timer activates when the "first group blocking" or "reset" message is received. | | **Forward redirecting number** | Forward redirecting and original called numbers from incoming call leg to outgoing call leg Configuration \*Modifying Gateway Configurations for SPIROU | | **Forward SS7 raw message bytes** | Forward SS7 raw data bytes for each signaling message, to the other call leg. | ## G | Parameter | Description | | ------------------------- | ----------------------------------------------- | | **Generate exit message** | Generate exit (EXM) message for outgoing calls. | ## I | Parameter | Description | | ----------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | **Incoming Continuity Check timer** | Incoming continuity check request (CCR) timer. | | **ISUP Network** | The ISUP Network parameter is used to associate an ISUP network with an ISUP interface. | | **Isup Options** | \*No confusion: Do not send confusion (CFN) message, forward to engine unrecognized MSUs. | | **Isup Stack Options** | \* No confusion: Do not send confusion (CFN) message, forward to engine unrecognized MSUs \* CGB Accept extra status byte: Do not reject group message (CGB, CGBA, CGU, CGUA) when using too many bytes in status field \* Extra called number byte | | **ISUP User Part** | The ISUP User Part parameter is used to associate an ISUP user part with an ISUP interface. | | **Isup Userpart Timers** | All timer values must be expressed in milliseconds. | | **IsupCic T12 Timer** | This timer is activated when the "blocking" message is sent. | | **IsupCic T13 Timer** | This timer is activated when the "initial blocking" message is sent. | | **IsupCic T14 Timer** | This timer is activated when the "unblocking" message is sent. | | **IsupCic T15 Timer** | This timer is activated when the "initial unblocking" message is sent. | | **IsupCic T16 Timer** | This timer is activated when the "reset circuit" message is sent. | | **IsupCic T17 Timer** | This timer is activated when the "initial reset circuit" message is sent. | | **IsupCic T3 Timer** | This timer is activated upon receipt of the "overload" message. | | **IsupNetwork T4 Timer** | This timer activates on receipt of MTP-STATUS primitive with the cause "inaccessible remote user". | | **IsupUserPart T1 Timer** | This timer is activated when the "release" message is sent. | | **IsupUserPart T2 Timer** | This timer is activated when the controlling exchange receives the suspend (user) message. | | **IsupUserPart T27 Timer** | This timer is activated when a continuity check failure is received. | | **IsupUserPart T31 Timer** | Release of ISDN User part signalling connection based on CO SCCP. | | **IsupUserPart T33 Timer** | This timer is activated when sending information request (INR). | | **IsupUserPart T34 Timer** | Waiting for continuity after recheck timer. | | **IsupUserPart T36 Timer** | Waiting segmentation (SGM) timer. | | **IsupUserPart T5 Timer** | This timer is activated when the initial "release" message is sent. | | **IsupUserPart T6 Timer** | This timer is activated when the controlling exchange receives suspend (network). | | **IsupUserPart T7 Timer** | This timer is activated when the "latest address" message is sent. | | **IsupUserPart T8 Timer** | This timer is activated when an exchange receives the "Initial address" message requiring a continuity check on this circuit or on a previous circuit. | | **IsupUserPart T9 Timer** | This timer is activated when the national controlling, or outgoing international exchange receives ACM. | ## L | Parameter | Description | | --------------- | ---------------------------------- | | **Location Id** | Circuit validation response (CVR). | ## M | Parameter | Description | | ----------------------------------- | ------------------------------------------------------------------------------------- | | **M3UA Network** | The M3UA Network parameter is used to associate an M3UA network with an ISUP network. | | **Max length of user-to-user info** | Maximum length of user-to-user information. | ## O | Parameter | Description | | ----------------------------------- | ---------------------------------------------------------------------------------------------------------- | | **Origin Point Code** | The Origin Point Code parameter (OPC) is used to associate an object with an originating point code (OPC). | | **Outgoing Continuity Check timer** | Outgoing continuity check request (CCR) timer. | ## P | Parameter | Description | | ---------------- | ---------------------------------------------------------------------------------- | | **Pause Action** | \*Clear all: Clear all calls upon reception of PAUSE (DPC unavailable). | | **Pause Timer** | When the ISUP interface is not available, clear all calls when this timer expires. | ## R | Parameter | Description | | -------------------------- | ----------------------------------- | | **Release response timer** | Waiting for release response timer. | ## S | Parameter | Description | | ----------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | **SCCP User Part** | The SCCP User Part parameter is used to associate an SCCP user part to a TCAP user part. | | **Send INR if no calling nb.in IAM** | Send INR if no calling number is present in incoming IAM. | | **SIP: Forward SS7 CPG hold retrieval** | Forward call hold/retrieval indication (like SS7 CPG with generic notification indicator 'hold''retrieval') from other leg to a SIP re-invite with direction = 'inactive' or 'sendrecv' Configuration \*Modifying SIP Profile Settings \*Modifyin | | **SIP: Forward SS7 suspend resume** | Forward suspend/resume indication from other leg to a SIP re-invite with direction = 'inactive' or 'sendrecv' Configuration \*Modifying SIP Profile Settings \*Modifying Profile for SPIROU | | **Skip timeslot 16 CIC** | Do not increment CIC value for timeslot 16. | | **Sls Selector** | \*Load distribution: MTP3 header SLS selection by load distribution \*By CIC: MTP3 header SLS selection by CIC value. | | **SS7: Default Backward Call Indicator** | Default backward call indicator value. | | **SS7: Default Backward Call Indicator enforce mask** | Mask that selects how the default backward call indicator is applied: \*Bits with mask of 0 will may be modified by Toolpack when appropriate (according to bridge with outgoing leg and call conditions, Toolpack will modify bits AB, I, K, N a | | **SS7: Default forward call indicator** | Default forward call-indicator value. | | **SS7: Default forward call indicator enforce mask** | Mask that selects how the default forward call indicator is applied: \* Bits with mask of 0 will may be modified by Toolpack when appropriate (according to bridge with incoming leg and call conditions, Toolpack will modify bits A, D, F, I an | | **SS7: Do not Forward Early ACM** | Do not forward early ACM in the call flow. | | **SS7: Force backward call indicator in ANM** | Force insertion of backward call indicator (BCI) in ANM, even if it was previously inserted in ACM | | **SS7: Forward application transport IE** | Forward application transport IE to the other leg | | **SS7: Forward Call CPG hold retrieval** | Forward call hold/retrieval indication (like SS7 CPG with generic notification indicator 'hold'/'retrieval') from this leg to the joined leg, or from the joined leg to this leg Configuration \*Modifying TDM SS7 Profile Settings \*Modifying Pr | | **SS7: Forward Call Indicator (international)** | Forward call indicator (FCI) bit A. | | **SS7: Forward Call suspend resume** | Forward suspend/resume indication from this leg to the joined leg, or from the joined leg to this leg. | | **SS7: Hop Counter IE handling** | Determine how to pass the hop counter (or SIP max-fowards) from the incoming leg to this outgoing SS7 leg (as hop-counter IE on this SS7 outgoing leg). | | **SS7: Send Charge Number IE in IAM** | Send charge number IE in IAM for ANSI variant. | ## T | Parameter | Description | | --------------------------------------- | --------------------------------------------------------------------------------------------------------------------------- | | **T18 Timer** | This timer activates, when the "group blocking" message is sent. | | **T19 Timer** | This timer activates when the "initial group blocking" message is sent. | | **T20 Timer** | This timer activates, when the "group unblocking" message is sent. | | **T21 Timer** | This timer activates, when the "initial group unblocking" message is sent. | | **T22 Timer** | This timer activates when the "circuit group reset" message is sent. | | **T23 Timer** | This timer activates when the "initial circuit group reset" message is sent. | | **T28 Timer** | This timer activates when the "sending circuit group query (CQM)" message is sent. | | **TCAP Userpart Lost Connection Timer** | TCAP provider connection timer. | | **TCAP Userpart T1 Timer** | ITU invoke timer default value - A timeout situation occurs when the timer associated with an operation invocation expires. | | **TCAP Userpart T2 Timer** | ITU reject timer - A Reject timeout situation occurs when the timer associated with the Wait for Reject state expires. | | **Timeslots** | The Timeslot parameter allows the selection of individual voice or data channels of a line. | | **Trunk Group Number** | Generate exit (EXM) message for outgoing calls. | | **Type of Network to Bind** | The Type of Network to Bind parameter is used to indicated which kind of network to associate with an ISUP Network. | --- # Agent Instructions This documentation is published with GitBook. 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