Other Trunk Features
¾ 4-34 ¾
n
nn
n 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 to 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 a 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 to 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 is not available)
1. Dial #, #.
This procedure must be used before hanging up.
(Polarity Reverse Detection is available)
1. Hang up.
Refer to the "DISA Operation Flowchart" in this Manual (P. 4-113)
RELATED SYSTEM DATA:
#03-A: DISA Line
#03-B: DISA Line Access
#08-A: Instrument Type
#30: Voice Recorded Message Time
#31: Trunk-to-Trunk Cut-Off Timer Assignment
#46: DISA Security Codes
#47: DISA Security Code Extension Assignment
#48: DISA Toll Restriction Class
#64-D: LED Indication for DISA Incoming Call
#66: DISA Timers
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