The ISDN Interface Profile object is a child of the ISDN Interface Profiles object. It allows you to configure standard parameter settings that are used by one or more ISDN Primary Rate Interfaces.
Default ISDN Interface Profiles for user side and network side operation (for each of the supported ISDN variants) are supplied with the MetaSwitch NE. The default profiles should be suitable for most applications.
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You cannot delete or disable an ISDN Interface Profile if one or more ISDN Primary Rate Interfaces refer to it. |
Parameter |
Access |
Description |
Description | Change Inactive | An optional text description of this ISDN Interface Profile. Specify a string of up to 64 characters, which must not match the description of any other ISDN Interface Profile. |
Usage | Create | Indicates whether ISDN PRIs that use this profile operate using the user side or network side version of ISDN protocols. Values:
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Protocol variant | Create | The variant of the control protocol used on ISDN Primary Rate Interfaces. Select the variant that most closely matches the remote equipment that you will be communicating with, or the variant used by that equipment. Values:
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T301 timer duration | Change Inactive | Duration in minutes of the T301 timer. This timer is used to clear calls that are not connected by the ISDN subscriber within the timeout afer an ALERT message was received.
The range and default for this timer depend on the Protocol variant field, as follows.
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T303 timer duration | Change Inactive | Duration in milliseconds of the T303 timer. This timer is started when a SETUP is sent on the ISDN interface, and is used to retry the SETUP or clear the call if no response is received.
The range and default for this timer depend on the Protocol variant field, as follows.
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T305 timer duration | Change Inactive | Duration in seconds of the T305 timer. This timer is used to detect the absence of a REL response to a DISC sent over an ISDN interface when tones and announcements are not being played.
The range and default for this timer depend on the Protocol variant field, as follows.
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T308 timer duration | Change Inactive | Duration in seconds of the T308 timer. This timer is used to detect the absence of a REL COMPLETE response to a REL sent over the ISDN interface.
The range and default for this timer depend on the Protocol variant field, as follows.
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T309 timer duration | Change Inactive | Duration in seconds of the T309 timer. This timer is used to determine when to release active calls after the ISDN layer 2 has failed.
Range: 10 - 90 seconds if Protocol variant is Telcordia National ISDN 2, unlimited for other variants.
Default: 90 seconds (for all variants).
The range and default for this timer depend on the Protocol variant field, as follows.
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T310 timer duration | Change Inactive | Duration in seconds of the T310 timer. This timer is used to time out calls where no ALERT, CONN or DISC is received over an ISDN interface following a CALL PROC.
The range and default for this timer depend on the Protocol variant and Usage fields, as follows.
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T313 timer duration | Change Inactive | This field is visible only for user-side profiles. Duration in seconds of the T313 timer. This timer is used to limit the time spent waiting for a CONN ACK message. Range: unlimited. The default is 4 seconds. |
T316 timer duration | Change Inactive | Duration in seconds of the T316 timer. This timer is used to detect a missing response to a RESTART message.
The range and default for this timer depend on the Protocol variant field, as follows.
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T321 timer duration | Change Inactive | Duration in seconds of the T321 timer. This timer is used to control D-channel re-establishment after failure when using D-channel backup procedures.
The range and default for this timer depend on the Protocol variant field, as follows.
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T322 timer duration | Change Inactive | Duration in seconds of the T322 timer. This timer is used to retransmit STATUS_ENQUIRY messages when no response is received to the previous one.
The range and default for this timer depend on the Protocol variant field, as follows.
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T402 timer duration | Change Inactive | Duration in seconds of the T402 timer. This timer is the time after an on-switch analog called party has gone on hook before the call should be released. Range: 10 - 12 seconds. The default is 12 seconds. |
Tprog timer duration | Change Inactive | Duration in minutes of the Tprog timer. This timer is used in a progressing state before alerting or connect. Range: 3 - 7 minutes. The default is 5 minutes. |
Trest timer duration | Change Inactive | Duration in seconds of the Trest timer. This timer is used to initiate restart procedures on out of service B-channels on an ISDN PRI. Range: 30 - 600 seconds. The default is 120 seconds. |
T(DL re-establish) timer duration | Change Inactive | Duration in milliseconds of the T(DL re-establish) timer. This timer is used to control data link re-establishment after a failure or when it has been released. Range: 100 - 10000 (0.1 - 10 seconds). The default is 1000 (1 second). |
Tserv duration | Change Inactive | This field appears only if Protocol variant is 5ESS National. Duration in milliseconds of the Tserv timer. This timer is used to control switchover to the backup D-channel if SERVICE / SERVICE ACK message exchange on the active channel does not complete within the specified time. The default is 300 seconds. |
Maximum number of invalid messages allowed on a call | Change Inactive | Maximum number of invalid messages received on a call for which a STATUS message is returned before the call is cleared. Range: 1 - 8. The default is 8. |
Maximum number of protocol errors allowed per hour | Change Inactive | Maximum number of protocol errors not associated with a call that should be tolerated over an ISDN interface in an hourly period. Range: 2 - 128. The default is 40. |
Fix bits | Change Inactive | Options that control the detailed behaviour of the NE when communicating with remote ISDN equipment. You should not need to modify these settings except during integration or interoperability testing with new ISDN equipment, or as instructed by MetaSwitch support personnel. If required, select one or more of the following values:
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Reference count | Read only | This field tracks the count of ISDN Primary Rate Interfaces that refer to this profile. If one or more ISDN Primary Rate Interfaces refer to this profile, it cannot be deleted or disabled. |
Requested status | Read only | Specifies whether an administrator has attempted to enable the ISDN Interface Profile. Values:
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Actual status | Read only | Specifies the current status of the ISDN Interface Profile. Values:
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