122 / Trk/Line DataRemote system accessThe remote access feature allows callers elsewhere on a privatenetwork, or on the public network, to get access to a Norstarsystem by dialing directly without going through an attendant.Once on the system, the remote user can use some of thesystem’s resources.Norstar systems with at least one Trunk Module support remote’ system access on the following trunk types which may requirethe remote caller to enter a password for Direct Inward SystemAccess (DISA):- auto-answer loop start trunks- auto-answer E&M trunks- DID trunks (by means of the DISA DN).The system resources (dialing capabilities, Line Pool access andfeature access) that a remote user may access depends on theClass of Service assigned to them. You can refer to thedescription of Class of Service in the Administration chapter formore details.Remote access on loop start and E&M trunksLoop start trunks provide remote access to Norstar from thepublic network; E&M trunks provide remote access from a privatenetwork. Each must be configured to be auto-answer (inTrunk dat,a programming) to provide remote system access.A loop start trunk must have disconnect supervision if it is tooperate in auto-answer mode. E&M trunks always operate indisconnect supervised mode.Auto-answer with DISAWhen a caller dials in, the system answers with stuttered dialtone. This is the prompt to enter a Class of Service (COS)password which determines which system capabilities areavailable to the caller.Modular DR5 Installer Guide
