DISA (Trunk – To – Trunk)
Description:
Direct Inward System Access (DISA) lets someone outside the system call in on a DISA
LINE and place a call on a system line, bypassing the system operator. A security code is
required t place an outside call (Trunk-To-Trunk), and the Toll Restriction Class assigned to a
security code determines the type of calls that can be placed. The DISA caller must use DTMF
telephone.
When Trunk Line is assigned as DISA Line in Program 03-A, DISA port can be
allocated to any one of DISA line which must be programmed In Program #08-A with
data 1.
Voice Announce/Record Unit (VAU) (Optional Item) can be used to the TX-Z
1232/2464 system as voice announce device for DISA Line. VAU unit provides guidance
messages by user-recorded voice on DISA feature (for outside party) and also for extensions.
Station Application:
System
Operation:
To use DISA to place a call on a system line (Trunk-To-Trunk):
1. Call the DISA line. The system answers with dial tone or voice recorded message.
2. Dial #.
3. Dial DISA security code. Receive confirmation tone.
4. Dial Queue Group number (1-6) for desired line or dial 9, then two-digit line number. If
busy tone is heard, use either procedure below to disconnect.
5. Dial telephone number including PBX Access Code if required.
6. Dial #. The call rings through.
To hang up the outside call and reuse the DISA line:
1. Dial # and . Hear dial tone.
2. Dial #.
3. Dial DISA security code. Receive confirmation tone.
4. Dial Queue Group number (1-6) for desired line or dial 9, then two-digit line number. If
busy tone is heard, use either procedure below is disconnect.
5. Dial telephone number including PBX Access Code if required.
6. Dial #. The call rings through.
To disconnect both the DISA line and the system line:
(Polarity Reverse Detection in not available)
1. Dial #,#.
This procedure must be used before hanging up.
(Polarity Reverse Detection is available)
2. Hang up.
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