The ISUP Local Signaling Destination object is a child of the SS7 Signaling object.
The ISUP Local Signaling Destination object contains configuration parameters and status information for the ISUP signaling stack in the MetaSwitch NE. There is a single ISUP Local Signaling Destination object, which is created before delivery of the MetaSwitch NE and which you cannot delete.
To start the ISUP Local Signaling Destination, you need to do the following:
Parameter |
Access |
Description |
Pass on message | Change Inactive | Specifies whether a message which was not fully understood should be forwarded. Values:
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Congestion status | Read only | Congestion level of the exchange. Values:
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CLLI | Change Inactive | CLLITM: Common Language(C) Location ID. This is a string of 12 alphanumeric digits assigned by TelcordiaTM, specifying the exact location of the local exchange. The CLLI is used to provide diagnostics information in circuit validation tests. If you do not have a CLLI assigned, you can set this field to any 12-digit alphanumeric string. In some cases you may have more than one CLLI assigned (for example if the NE operates in multiple local areas). If so, you can set one CLLI value here to be used as the default, and then override it with a different value on one or more ISUP Remote Signaling Destinations so that a different value is presented on messages to these destinations. |
Suppress echo cancellation requests | Change Inactive | Specifies whether echo control device indicator in outgoing IAMs and received ACM, CPG and ANM messages is to be suppressed. This option is used to avoid unnecessary usage of echo cancellation resources in the network and to force MetaSwitch to do any cancellation of echo from the called party required for calls routed out over ISUP trunks. It also forces MetaSwitch to provide echo cancellation for the incoming side of the call.
The only circumstances under which this field should be set to True are as follows.
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Send UPT messages when restart ends | Change Inactive | Specifies whether the NE should send a User Part Test message to each active peer when the MTP3 Restart procedure ends. Values:
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T1 / TREL timer duration | Change | Duration in milliseconds of T1 short release timer. This timer is run after sending a Release message while awaiting a Release Complete. On expiry, ISUP retransmits the Release message. Range: 4 - 6 seconds. The default is 5 seconds. |
T5 / TREL,l timer duration | Change | Duration in milliseconds of T5 long release timer. This timer is run on sending a Release message while awaiting a Release Complete, after the short release timer (T1) has expired. The only valid value for this field is 1 minute. |
T6 / TSUS,r timer duration | Change | Duration in milliseconds of T6 suspend network timer. This timer is run on receiving a Suspend message, awaiting called party disconnect, Resume or Release message. Range: 10 - 32 seconds. The default is 20 seconds. |
T7 / TIAM timer duration | Change | Duration in milliseconds of T7 address complete timer. This timer is run on sending an Initial Address, while awaiting an Address Complete, Answer or Release message. Range: 20 - 30 seconds. The default is 25 seconds. |
T8 timer duration | Change | Duration in milliseconds of T8 continuity timer. This timer is run on receipt of an Initial Address Message indicating previous or incoming continuity check, while awaiting Continuity message. Range: 10 - 15 seconds. The default is 12 seconds. |
T12 / TBLO (blocking) timer duration | Change | Duration in milliseconds of T12 short blocking timer. This timer is run on sending a Blocking message, while awaiting Blocking Ack. Range: 4 - 6 seconds. The default is 5 seconds. |
T13 / TBLO,l (blocking) timer duration | Change | Duration in milliseconds of T13 long blocking timer. This timer is run on sending a Blocking message, while awaiting Blocking Ack, after short blocking timer has expired. The only allowed value for this field is 1 minute. |
T14 / TBLO (unblocking) timer duration | Change | Duration in milliseconds of T14 short unblocking timer. This timer is run on sending an Unblocking message, while awaiting Unblocking Ack message. Range: 4 - 6 seconds. The default is 5 seconds. |
T15 / TBLO,l (unblocking) timer duration | Change | Duration in milliseconds of T15 long unblocking timer. This timer is run on sending an Unblocking message, while awaiting Unblocking Ack message, after the short unblocking timer has expired. The only allowed value for this field is 1 minute. |
T16 / TRSC timer duration | Change | Duration in milliseconds of T16 short reset timer. This timer is run on sending a Reset message, while awaiting Release Complete. Range: 4 - 15 seconds. The default is 10 seconds. |
T17 / TRSC,l timer duration | Change | Duration in milliseconds of T17 long reset timer. This timer is run on sending a Reset message, while awaiting Release Complete, after short reset timer has expired. The only allowed value for this field is 1 minute. |
T18 / TCGB (blocking) timer duration | Change | Duration in milliseconds of T18 short group blocking timer. This timer is run on sending a Circuit Group Blocking, pending CGB Ack message. Range: 4 - 15 seconds. The default is 10 seconds. |
T19 / TCGB,l (blocking) timer duration | Change | Duration in milliseconds of T19 long group blocking timer. This timer is run on sending a Circuit Group Blocking, pending CGB Ack, after short group blocking timer has expired. The only allowed value for this field is 1 minute. |
T20 / TCGB (unblocking) timer duration | Change | Duration in milliseconds of T20 short group unblocking timer. This timer is run on sending a Circuit Group Unblocking, pending CGU Ack message. Range: 4 - 15 seconds. The default is 10 seconds. |
T21 / TCGB,l (unblocking) timer duration | Change | Duration in milliseconds of T21 long group unblocking timer. This timer is called TCGBU. It is run on sending a Circuit Group Unblocking, awaiting CGU Ack, after the short group unblocking timer has expired. The only allowed value for this field is 1 minute. |
T22 / TGRS timer duration | Change | Duration in milliseconds of T22 short group reset timer. This timer is run on sending a Group Reset message, awaiting Group Reset Ack. Range: 4 - 15 seconds. The default is 10 seconds. |
T23 / TGRS,l timer duration | Change | Duration in milliseconds of T23 long group reset timer. This timer is run on sending a Group Reset message, awaiting Group Reset Ack, after short group reset timer has expired. The only allowed value for this field is 1 minute. |
T25 timer duration | Change | Duration in milliseconds of T25 initial continuity check failure timer. This timer is run when initial continuity check failure is detected. On expiry, ISUP sends a Continuity Check Request message and repeats continuity check. Range: 1 - 10 seconds. The default is 5 seconds. |
T26 timer duration | Change | Duration in milliseconds of T26 continuity recheck failure timer. This timer is run when a second or subsequent continuity check failure is detected. On expiry, ISUP sends a Continuity Check Request and repeats continuity check. Range: 1 - 3 minutes. The default is 2 minutes. |
T27 / TCOT,l timer duration | Change | Duration in milliseconds of T27 continuity check failed received timer. This timer is run on receiving a second Continuity (failed) message, while awaiting receipt of Continuity Check Request. Range: 4 - 5 minutes. The default is 5 minutes. |
T28 / TCQM timer duration | Change | Duration in milliseconds of T28 await circuit query response timer. This timer is run on sending a Circuit Query Message, while awaiting a Circuit Query Response. The only allowed value for this field is 10 seconds. |
T37 timer duration | Change | Duration in milliseconds of T37 user part availability test timer. This timer is run when a Circuit Validation Test message is sent, awaiting a received Circuit Validation Response or any other ISUP message. The only valid value for this field is 30 seconds. |
CCR timer duration | Change | Duration in milliseconds of ANSI CCR Timer. This timer is run on sending a Continuity Check Request, awaiting a Loopback Ack. The only valid value for this field is 2000. |
CCR R timer duration | Change | Duration in milliseconds of ANSI CCR,R Timer. This timer is called TCOT,r. It is run on receiving the first failed Continuity message, awaiting receipt of Continuity Check Request. Range: 16000 - 20000. The default is 20000. |
CGB timer duration | Change | Duration in milliseconds of ANSI CGB,D Timer. This timer is run on receiving the first Circuit Group Blocking message, awaiting the second CGB. The only valid value for this field is 5000. |
CVT timer duration | Change | Duration in milliseconds of ANSI CVT Timer. This timer is run on sending a CVT message, awaiting a CVR. The only valid value for this field is 10000. |
BLO M timer duration | Change | Duration in milliseconds of ANSI BLO M Timer. This timer is run on a blocked circuit once any call on the circuit has been released. If the circuit is not available when the timer expires, ISUP notifies maintenance. The default is 300000. |
SUS timer duration | Change | Duration in milliseconds of ANSI SUS Timer. This timer is run on sending a Suspend message, awaiting called party off-hook or Release. Range: 14000 - 16000. The default is 15000. |
Cong timer duration | Change | Duration in milliseconds of ANSI Cong Timer. This timer is run when an Address Complete message cannot be sent because of congestion or isolation of the preceding switch. Range: 22000 - 32000. The default is 32000. |
MCC timer duration | Change | Duration in milliseconds of ANSI Maintenance Call Clearing (MCC) Timer. Range: 52000 - 240000. The default is 60000. |
Auto congestion timer duration | Change | Duration in milliseconds of Auto Congestion Timer as defined in Q.764 and GR-317. This timer is run when a Release containing a congestion indication is received. The only allowed value for this field is 5 seconds. |
DPC long duration timer duration | Change | Duration in milliseconds of DPC long duration timer. The default is 300000. |
Userpart inaccessibility timer duration | Change | Duration in milliseconds of Userpart Inaccessibility Timer. The default is 30000. |
Userpart long duration timer duration | Change | Duration in milliseconds of Userpart long duration timer. The default is 300000. |
Circuit group query timer duration | Change | Duration in milliseconds of Circuit Group Query timer. ISUP runs a Circuit Group Query test every time this timer expires. Range: 0 - 86400000. The default is 86400000ms. |
Maximum reset retries | Change | Maximum number of retries allowed for a reset request if the timer expires. The default is 13. |
Maximum blocking retries | Change | Maximum number of retries allowed for a blocking request if the timer expires. The default is 13. |
Maximum unblocking retries | Change | Maximum number of retries allowed for an unblocking request if the timer expires. The default is 13. |
Enable ISUP called address prefix support | Change | Specifies whether the NE supports called address prefixes (NXZZ codes) on ISUP trunks. These prefixes may be required for long-distance calls in Canada, but are not required for deployments elsewhere. Values:
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Deactivation mode | Change | Specifies how child objects should be deactivated when deactivating this object. Values:
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Alarm state | Read only | Specifies whether any alarms are currently raised for this object. Values:
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Alarm log correlator | Read only | Identifier of the log message for the event that caused the last Attention Required alarm state for this object. This field is reset when the Attention Required alarm events field is reset to zero. |
Attention Required alarm events | Read only / Reset | Number of times (since the alarm count was reset) that this object's alarm state has gone to Attention Required. |
Alarm state changed timestamp | Read only | The time at which the Attention Required alarm events was last reset to zero. |
Alarm events reset timestamp | Read only | The time at which the alarm count was last reset to zero. |
Child Attention Required alarms | Read only | The total number of child objects of this ISUP Local Signaling Destination (and their own child objects) that are in Attention Required state. |
Child Attention Required alarm events | Read only / Reset | The total number of times that the alarm state for a child object has gone to Attention Required. |
Child Attend To Dependent alarms | Read only | The total number of child objects of this ISUP Local Signaling Destination (and their own child objects) that are in Attend To Dependent state. |
Child Attend To Dependent alarm events | Read only / Reset | The total number of times that the alarm state for a child object has gone to Attend To Dependent. |
Summary child alarm state | Read only | Summarizes the alarm status for all children of this object. Values:
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Requested status | Read only | Specifies whether an administrator has attempted to activate the ISUP Local Signaling Destination. Values:
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Actual status | Read only | Specifies the current status of the ISUP Local Signaling Destination. Values:
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