Features and Specifications Manual
D9 – 263
Doc.
No. 8201 -
Release 1.0
July 2003
Direct Inward System
Access (DISA)
D-9
FEATURE
DESCRIPTION
Direct Inward System Access allows an outside caller to access the system
from an outside line without Attendant or station assistance. The outside
user may originate calls over any or all of the system facilities such as a Tie
line network or CO/PBX trunk after successfully entering a password.
SYSTEM
AVAILABILITY
Terminal Type
Not applicable.
Required Components
VRS(4)-U( ) ETU to hear a message telling the caller which digits to enter
for DISA access. A message is not required for DISA to work.
OPERATING
PROCEDURES
1.
Dial the desired number to connect to the system.
2.
A special tone is heard after ringback tone. (If a VRS(4)-U( ) ETU is
programmed for DISA, a voice announcement can be provided
instead of a special tone.)
3.
Dial the DISA Access Code.
z
If accepted, internal dial tone is heard.
z
If denied, error tone is heard.
4.
Dial the DISA ID code (Station Number).
5.
Dial the password.
6.
Dial a Trunk Access Code and the desired outside number.
1.
Dial the desired number to connect the system.
2.
Dial the station number.
To place a call using DISA:
To place an internal call using DISA:
