3-56 FeaturesT 3 FeaturesToll RestrictionToll Restriction is a system programmable feature that can prohibit certain extension usersfrom making unauthorized toll calls.Every extension is programmed to belong to one of 5 classes of service (COS). Each COSis programmed to have a toll restriction class for day mode, night mode and lunch mode.There are 5 toll restriction COS numbers available. Toll restriction COS number 1 is thehighest class and the COS number 5 is the lowest. That is, COS number 1 allows all tollcalls. COS numbers 2 through 5 are used to restrict calls by combining pre-programmeddeny and exception codes shown in the table on the next page.Denied CodesAn outgoing outside call made by an extension with a toll restriction COS number between 2and 5 is first checked against the assigned denied codes in program [302]-[305].If the first digits of the dialed number (not including the line access code) are not found inthe class, the call can be made. Each class can store up to 20 denied codes, each consistingof 10 digits.Exception CodesThese codes are used to override a programmed denied code. A call denied by the deniedcodes is checked against the selected exception codes assigned in program [306]. If a matchis found, the call can be made.Up to 20 exception codes, each consisting of 10 digits, can be stored. The available numberof codes depends on the COS number.• Emergency numbers, such as the police or fire station, should be stored in program[309] “Emergency Dial Number Set” so that they are excepted from toll restriction.• If a stored Host PBX access code in program [403] “Host PBX Access Codes” or a storedcarrier code in program [300] “Carrier Code Assignment” is found in the dialed number,the subsequent telephone numbers will be checked for toll restriction.• The interdigit timer assigned in program [208] “Interdigit Time” applies until the tollrestriction check is completed. When the timer expires, an outside outgoing call will bedisconnected while dialing, if “Enable” was selected in program [211] “No DialDisconnection”.• The toll restriction class for a station locked extension can be assigned in program [312]“Toll Restriction – Station Lock Boundary Class” so that even a station locked extensioncan make a local call, etc.• It is programmable whether the “ ” or “#” the user dials is to be checked or not on theToll Restriction code in program [125] “Toll Restriction Check for and #”. This isuseful to prevent unauthorized calls which could be possible through certain CentralOffice exchange systems.• Required System Programming[301] Toll Restriction – System Speed Dialing Boundary Class[302]-[305] Toll Restriction – Classes 2 through 5 Denied Codes[306] Toll Restriction – Exception Codes[601]-[603] TRS – Class of Service Assignment – Day/Night/Lunch• Related Feature ReferencesEmergency CallToll Restriction for System Speed DialingToll Restriction Override by Extension PasswordToll Restriction – Station Lock Boundary Class!!+
