Example ARS Operation

Last Updated : Aug 30, 2026 |
The simplest example for ARS operation are the settings applied to a defaulted system. These vary between U-Law systems and A-Law systems. For Server Edition systems refer to Server Edition Outgoing Call Routing.
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A-Law Systems

This set of defaults is applied to A-Law systems, typically supplied to locales other than North America. The defaults allow any dialing that does not match an internal number to be routed off-switch as follows:
  1. System Short Code - ?/Dial/./50:Main
    The default system short code ? will match any dialing for which no other user, user rights or system short code match is found. This short code is set to route all the digits dialed to ARS form 50.
  2. ARS Form - 50:Main
    This form contains just a single short code.
  3. ?/Dial3K1/./0
    This short code matches any digits passed to the ARS form. It then dials the digits out on the first available line within line group 0 (the default outgoing line group for all lines).

U-Law Systems

This set of defaults is applied to U-Law systems, typically supplied to locales in North America. The defaults route any dialing prefixed with a 9 to the ARS and secondary dial tone.
  1. System Short Code - 9N/Dial/N/50:Main
    The default system short code 9N is used to match any dialing that is prefixed with a 9. It passes any digits following the 9 to ARS form 50.
  2. ARS Form - 50:Main
    This form has secondary dial tone enabled. It contains a number of short codes which all pass any matching calls to the first available line within line group 0 (the default outgoing line group for all lines). Whilst all these short code route calls to the same destination, having them as separate items allows customization if required. The short codes are:
    • 11/Dial Emergency/911/0 - This short code matches an user dialing 911 for emergency services.
    • 911/Dial Emergency/911/0 - This short code matches an user dialing 9911 for emergency services.
    • 0N;/Dial3K1/0N/0 - This short code matches any international calls.
    • 1N;/Dial3K1/1N/0 - This short code matches any national calls.
    • XN;/Dial3K1/N/0 - This short code matches 7-digit local numbers. Note: From October 2021, telephony providers in the US have ceased routing 7-digit local numbers.
    • XXXXXXXXXX/Dial3K1/N/0 - This short code matches 10-digit local numbers.
Related links
Configuring ARS