Feature DescriptionCO-to-CO Line Call (exceptUnattended Conference Call)DurationIf a call between two outside parties is established, the call durationcan be restricted by the 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 CO-to-CO line call were established byan extension (e.g., an extension makes a CO line call, then transfersthe call to an outside party), the time limit applied to the CO line callthat was made first will be used.Dialing Digit Restrictionduring ConversationWhile engaged in an incoming CO line call, the dialing of digits canbe restricted. If the number of dialed digits exceeds the limitation, theline will be disconnected.*1 A party connected via an IP CO line or SIP CO line will not hear the warning tone.Conditions• During an Unattended Conference Call, the Unattended Conference Recall time is applied. (®4.1.18 Conference)• When using LCO lines that do not support Calling Party Control (CPC) signal detection (® 4.1.23 CPC(Calling Party Control) Signal Detection), the CO-to-CO Line Call Duration timer should not be disabled,as automatic end of call detection cannot be performed.PC Programming Manual References10.7.1 PBX Configuration—[2-7-1] System—Class of Service—COS Settings—CO & SMDR— Extension-COLine Call Duration Limit10.9 PBX Configuration—[2-9] System—System Options—Option 2— Extension - CO Call Limitation—ForIncoming Call11.1.1 PBX Configuration—[3-1-1] Group—Trunk Group—TRG Settings—Main→ CO-CO Duration Time (*60s)→ Extension-CO Duration Time (*60s)15.5 PBX Configuration—[7-5] TRS—Miscellaneous— Dial Digits Limitation After Answering—Dial DigitsFeature Manual References4.1.22 COS (Class of Service)4.1.18 ConferenceDescriptionAn extension user can establish a conference call by adding additional parties to an already existing two-partyconversation. This PBX supports three-party through eight-party conference calls. Conferences with more thanfour parties are only possible when a PT or PS user originates the conference.Unattended Conference:The conference originator can leave the conference and allow other parties to continue. Establishing anUnattended Conference allows the originator to return to the conference. Unattended Conferences can onlybe established by PT and PS users.Document Version 2016-03 Feature Manual 794.1.18 Conference
