3-16 DBS 576 (USA) issued October 2000 576-36-700Chapter 3. System Features Section 700 - OperationRelated Programming• FF2: Trunk COS• FF3: Extension COS AssignmentsConsiderations• N/AClass of Service - T1 Trunk Ring Back Service ToneWith Version 3.5 and higher, the system can be programmed to send a simulated ring back tone to T1trunks when the CO does not provide a ring back tone.Hardware Requirements• N/ARelated Programming• FF1-0-04: Trunk COSConsiderations• Supports Ground Start/Loop Start TrunksClass of Service - Trunk to Trunk RestrictionTrunk to Trunk COS allows or restricts call transfers from one trunk to another trunk based on theoriginating and receiving trunk COS.Hardware Requirements• N/ARelated Programming• FF1-0-04: Class of Service Trunk/Tie• FF1-0-11: Trunk-Trunk RestrictionConsiderations• N/AClass of Service - Extension (Station) TimersPrior to CPC Version 2.0, timers related to certain extension functions such as the Hold Recall Timerwere only available on a system-wide basis. Beginning with CPC Version 2.0 these extensionfunctions may continue to use the same system-wide timers or a newly added Station Timer Classsettings. Up to eight Station Timer Classes may be specified. Then an extension may be assigned aStation Timer Class.The following table shows the extension timers that may be assigned on a class basis.
