2.11.8 Trunk Call LimitationDescriptionTrunk calls are limited by the following features:Feature DescriptionExtension-to-Trunk CallDurationIf a call between an extension user and an outside party isestablished, the call duration can be restricted by a system timerselected for each trunk group. Both parties will hear warning tones atfive-second intervals starting 15 seconds before the time limit.*1 Whenthe time limit expires, the line will be disconnected. COSprogramming determines whether this feature is enabled or disabled.Whether this feature applies to outgoing calls only, or to both outgoingand incoming calls is determined through system programming.Trunk-to-Trunk Call (exceptUnattended Conference Call)DurationIf a call between two outside parties is established, the call durationcan be restricted by a system timer selected for each trunk group.Both parties will hear warning tones at five-second intervals starting15 seconds before the time limit.*1 When the time limit expires, theline will be disconnected.If both parties involved in the trunk-to trunk call were established byan extension (e.g., an extension makes a trunk call, then transfersthe call to an outside party), the time limit applied to the trunk call thatwas made first will be used.Budget Management When the preprogrammed call charge limit has been reached, anextension user will hear 3 warning tones at five-second intervals. It isprogrammable whether the line is disconnected after the third tone.After the call has ended, the extension user cannot make further trunkcalls until the charge limit has been increased or cleared by anextension assigned as a manager (® 2.7.2 Budget Management).Dialling Digit Restrictionduring ConversationWhile engaged in an incoming trunk call, the dialling of digits can berestricted. If the number of dialled digits exceeds the limitation, theline will be disconnected.Logical Partitioning Feature Some types of trunk calls can be restricted with the following LogicalPartitioning settings:9.2.2 PBX Configuration—[1-1] Configuration—Slot—SystemProperty—Site—Main— Area ID for logical partition10.9 PBX Configuration—[2-9] System—System Options—Option2— Applying logical partitioningFor details, refer to "10.9 PBX Configuration—[2-9] System—SystemOptions—Option 2— Applying logical partitioning" in the PCProgramming Manual.The following log data can be collected and displayed through PCProgramming. Refer to "7.3.5 Utility—Log—Call Control Log" in thePC Programming Manual.1. Log data (condition) will be recorded when you change any of theLogical Partitioning settings.2. Log data (status) will be recorded whenever a call is restricted bythe Logical Partitioning feature.*1 A party connected via an IP trunk or SIP trunk will not hear the warning tone.176 Feature Guide2.11.8 Trunk Call Limitation
