UNIVERGE SV8100 Issue 7.0Class of Service 2 - 271Class of ServiceDescriptionClass of Service (COS) sets various features and dialing options (called items) for extensions. Thesystem allows any number of extensions to share the same Class of Service. An extension can have adifferent Class of Service for each of the Night Service modes. This lets you program a different set ofdialing options for daytime operation, nighttime operation and even during lunch breaks. An extensionClass of Service can be changed in system programming or via a Service Code (normally 677). Thereare 15 available Classes of Service.Conditions Before assigning a new COS, make sure the new COS matches the old COS or you mayenable options, which the extension should not have or remove options, which it shouldhave. An extension can have a different Class of Service for each Service mode. At default, theMode names are assigned as follows: Mode 1 = No setting Mode 2 = Night Mode 3 = Midnight Mode 4 = Rest Mode 5 = Day2 Mode 6 = Night2 Mode 7 = Midnight2 Mode 8 = Rest2 If a user dials a number not programmed in ARS, Program 26-01-03 determines if thesystem should route over the trunk group settings defined in Program 21-02 or play an errortone. When using ARS Class of Service, with Program 26-01-03 set to (1) “Play Warning Tone”,any trunk (except a CCIS trunk) pointed or transferred to a virtual that is Call Forward Off-Premise will not complete. For a virtual to Call Forward Off-Premise, Program 26-01-03must be set to “Route to trunk group” and the call will follow the trunk group settings of thetrunk, assigned in Program 21-03. When using ARS Class of Service, with Program 26-01-03 set to (1) “Play Warning Tone”,a CCIS trunk pointed or transferred to a virtual that is Call Forward Off-Premise will alwaysfollow ARS Class 1 routing properties.