Mitel SX-200 Documentation page 245

SECTION MITL9105/9110-096-105-NA
MULTIPLE DISA ACCESS CODE
Page 190
Description
This feature provides a degree of protection against fraudulent use of
the user must enter an Account Code (instead of an access code). The
system examines the Account Code dialed and drops the call if it does
not verify, or allows the user to proceed if it verifies. If the code
verifies and SMDR is enabled, SMDR will be activated.
Conditions
The outside caller must use a DTMF telephone.
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A DISA trunk may be used as a standard CO trunk.
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Access to features is controlled by the DISA trunks COS.
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A switchhook flash is not possible on a DISA trunk.
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if a code does not verify, the trunk is dropped with no warning
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tones.
The user must dial an Account Code after accessing the system.
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The DISA trunk must be ground start.
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System Options 236 (Variable Length Account Codes) and 231
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(Verifiable Account Codes) are mutually exclusive.
Programming
Assign a COS to the DISA trunk
In the DiSA's COS, enable COS Option 110 (Special DISA).
If ARS is required (for external calls) enable COS Option 111
(Direct To ARS) in the DISA's COS.
System Option 230 (Account Code Enable) must be enabled.
System Option 231 (Verifiable Account Code) must be enabled
and program required Account Codes as per Verifiable Account
Code this Section.
For Account Codes of four digits, System Option 232 (Account
Code 4 digits) must be enabled.
For Account Codes of eight digits, System Option 233 (Account
Code 6 digits) must be enabled.
For Account Codes of 12 digits, System Option 234 (Account
Code 12 digits) must be enabled.
For Account Codes of six digits, do not enable a System Option.
Enable the required SMDR codes, see Section MITL9105/9110-
096-45 1 -NA.
Operation
Program required Account Codes as per Verifiable Account Code
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in this Section.
Access the PBX on a specified DISA trunk - two ringback tones
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are heard, then PBX dial tone is returned.
Dial the DISA Account Code - if the code verifies, dial tone is
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returned. If the code does not verify the trunk is dropped.