1.19 Voice Mail Features
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–DISA Intercept 
1.1.1.2 Intercept Routing, 1.15.6 Direct Inward System Access (DISA))
For these features, the caller does not need to know the mailbox number of the called extension because the code is automatically transmitted to the VPS. If a DISA call is transferred to the VPS by IRNA from a DISA ring group, the PBX will transmit the mailbox number of the receiving extension with the lowest jack number.
•In order to achieve proper recording quality, Data Line Security should be turned on for the VPS (
1.10.5 Data Line Security).
•Each extension's mailbox number is the same as its extension number.
•If "TA series" cannot be selected with the PBX type setup menu of the
•If a call is directed to a VPS port while the operator or manager is recording or playing back an OGM for DISA/UCD, the PBX cannot send a DTMF signal to the VPS, and so the VPS answers the call with an OGM (e.g., "Enter the extension number of the desired party.").
User Manual References
1.8.3 If a Voice Processing System is Connected
Feature Guide 149
