4.8 System [2]Feature Guide 3614.8.16 Class of Service—Internal Call Block [2-7-3]Internal Call Block determines the restrictions placed on making intercom calls. The extensions, incomingcall distribution groups, and doorphones belonging to a certain COS can be programmed to not receiveintercom calls from those belonging to a certain COS.COS Number of the Extension Which Receive the Call from Other Extension1–64Specifies the COS combination that blocks intercom calls.DefaultAll extensions: Non BlockValue RangeBlock, Non BlockProgramming References4.9.6 Incoming Call Distribution Group—Group Settings [3-5-1]—Main—COS4.10.1 Wired Extension—Extension Settings [4-1-1]—Main—COS4.10.7 Portable Station—Extension Settings [4-2-1]—Main—COS4.11.1 Doorphone [5-1]—COSFeature Guide References1.1.2.2 Internal Call Block4.8.17 Ring Tone Patterns—Call from CO [2-8-1]Different ring tone patterns can be selected for incoming CO line calls depending on the CO line groups thecalls come through. A maximum of 8 Ring Tone Pattern Tables can be programmed, and any pattern tablecan be selected for use by an extension.Ring Tone Pattern Table 1–8Specifies the ring tone pattern for incoming CO line calls.DefaultSingleValue RangeSingle, Double, TripleProgramming References4.15.1 CO Line Setting [9-1]—Trunk Group Number4.10.1 Wired Extension—Extension Settings [4-1-1]—Main—Ring Pattern Table4.10.7 Portable Station—Extension Settings [4-2-1]—Main—Ring Pattern Table
