Feature Manual References3.1.9 Call Splitting3.1.10 Call Transfer3.1.18 Conference3.1.21 COS (Class of Service)DescriptionEach extension must belong to a Class of Service (COS). By assigning certain extensions to a COS, it ispossible to control the behavior and privileges of extension users (allowing or denying certain extensionsaccess to various features, extensions, and CO lines) depending on the duties appointed to them.Many extensions can belong to the same COS by assigning each extension the same COS number, allowingthe same restrictions and privileges to apply to a group of extensions.The following features are controlled on a COS basis:a. ® 9.1.14 Internal Call Blockb. ® 6.1.6 FWD (Call Forwarding)c. ® 4.1.10 DND (Do Not Disturb)—DND Overrided. ® 3.1.8 Call Pickupe. ® 1.1.2 Account Code Entryf. ® 3.1.16 CO Line Accessg. ® 5.1.3 Executive Busy Overrideh. ® 3.1.6 Call Monitori. ® 12.1.3 OHCA (Off-hook Call Announcement)j. ® 20.1.4 Whisper OHCAk. ® 17.1.6 TRS (Toll Restriction)l. ® 5.1.4 Extension Dial Lockm. ® 20.1.1 Walking COSn. ® 3.1.17 CO Line Call Limitationo. ® 3.1.10 Call Transferp. ® 4.1.11 Door Openq. ® 4.1.8 DISA (Direct Inward System Access)r. ® 20.1.5 Wireless XDP Parallel Modes. ® 16.1.3 SMDR (Station Message Detail Recording)—SMDR for Outgoing CO Line Callst. ® 17.1.5 Time Service—Time Service Switchingu. ® 11.1.1 Manager Featuresv. ® 13.1.30 PT Programmingw. ® 13.1.7 PDN (Primary Directory Number)/SDN (Secondary Directory Number) Extension—SDN Keymode, SDN Walking COS, and assigning SDN buttons through PT programmingConditions• Walking COSExtension users can make a call from extensions of a less-privileged COS by using their own COStemporarily. (® 20.1.1 Walking COS)PC Programming Manual References4.12 [2-7-1] Class of Service—COS Settings6.1 [4-1-1] Wired Extension—Extension Settings—Main— COSDocument Version 2009-12 Feature Manual 613.1.21 COS (Class of Service)
