3-54 Telephone FeaturesD 3.2 Telephone FeaturesDirect Inward System Access (DISA)Allows an outside caller to access specific extensions, etc., as if the caller is an extensionin the system. A DISA outgoing message gives outside callers assistance, such as listingthe extension numbers or DISA built-in auto attendant (AA) numbers in the system. If theoptional OGM/FAX Detection card is not installed, callers will only hear a beep insteadof a message. This saves you having an operator. A pre-assigned DISA security code maybe necessary, depending on the mode, to access the features directly.None Security mode: Any caller can make outside or intercom calls without entering aDISA security code.Trunk Security mode (default): You need to enter a DISA security code when makingoutside calls.All Security mode: You need to enter a DISA security code when making any call.You also have the option of calling an extension or ring group using a one digit number(DISA built-in auto attendant number) via DISA calls.Calling an extension by following the outgoing messageAny TelephoneEnter the DISA phone number. Ringback tone andDISA outgoing messageDISA phone no. extension no.Enter the extension number. Ring back toneIn None Security ModeEnter the DISAphone number.Ringback toneandDISA outgoingmessageDISA phone no. extension no.Enter theextension number.DISA security codeEnter the pre-assignedDISA security code.Ring backtoneOne shortbeepIn All Security ModeDial .• You can dial the AA number instead.• You can dial the AA number instead.
