ISDN Protocol Administrator's and Developer's Guide ... - Intervoice

Extension Status (BTNR 188 Section 20 Issue 3 December 1989)The Extension Status Call supplementary service offers thecapability of determining, on request, the status of an extension.This service permits the establishment of a virtual call to anextension to determine its state (free, busy, out of service, ordiverted) without calling the extension.Controlled Diversion (BTNR 188 Section 21 Issue 3 December 1989)The Controlled Diversion supplementary service offers callers whoencounter Call Diversion (BTNR 188 Section 11) the capability ofeither allowing the diversion to proceed or exercising alternativecontrol over the subsequent progress of the call.The Call Diversion supplementary service allows the called numberto divert a call to another number based upon three diversion types:• Immediate• Busy• Ring No AnswerThe Controlled Diversion supplementary service allows the OmviaMedia Server the option of preventing a call from being diverted toanother number. This feature returns the diversion type and thenumber diverted to the application. This feature is helpful inpreventing outbound calls from being diverted to VM or ACDqueues.In addition, the application has access to read the Calling LineCategory (CLC) and Service Indicator Code (SIC) fields on inboundcalls and set both of these fields on outbound calls. The outboundCalling Line Identity (CLI) can also be set using this protocol. (SeeCLC Codes in Table 6-2 on page 6-7.)6-6 ISDN Protocol Administrator’s and Developer’s Guide 60001262, First Edition