Specifications

CONTENTS
4.1.9
DATA SECURITY
Single line extensions used with modems and facsimile machines can be pro-
grammed so that they will not receive any system-generated tones that would dis-
rupt data transmissions. In addition, these devices receive DCS C.O. ringing pat-
tern instead of intercom ring pattern. Devices connected to an SLI card receive a
disconnect signal upon termination.
DATABASE PRINTOUT
A copy of the customer database can be obtained by using PCMMC. This informa-
tion can be directed to a printer or the PC screen and may be done either on-site or
remotely. A complete database or specific data blocks may be obtained.
DIALED NUMBER IDENTIFICATION SERVICE (DNIS)
When DNIS service is provided on an incoming E&M trunk the DCS 50si can route
calls based on the numbers received.
DIRECT IN LINES
Outside lines may be programmed to bypass the operator(s) and ring directly at
any station or group of stations.
DIRECT INWARD DIALING (DID-USE E&M TRUNK)
The DCS 50si can use local telephone company-provided DID service via an E&M
trunk. When programmed, anyone dialing a user’s personal number rings directly
to that user’s office. DID calls to a busy station have the option to return busy signal
to the C.O. or return ringback to the C.O. When ringback is selected, the called
station receives off-hook ring. Multiple DID numbers can ring the same extension
or station group and display keysets show a DID directory name when ringing if a
name has been programmed. DID calls can be assigned both a day and night ring
destination. This allows routing of DID calls that have one destination during the
system Day mode to be routed to a different destination during the system Night
mode. DID calls that are directed to ring a voice mail machine can be identified by
a special digit (see Voice Mail Integration). As it is possible to program E&M trunks
to follow the DID translation tables, the system can use both way DID type service.
DIRECT INWARD SYSTEM ACCESS (DISA)
Users can call in on specific DISA lines at any time, input a security code and
receive system dial tone. Users can now place internal calls or if permitted, calls
using C.O. lines. The caller must have a tone dial phone and know his/her DISA
security code. DISA lines can be used as both way lines or incoming only and may
be active in day mode, night mode or both. The C.O. lines used for DISA must have
disconnect supervision.
DIRECT TRUNK SELECTION
Each station can be allowed access to or denied access from a trunk or trunk group
by access code when LCR is activated. When restricted, the station user must use
a trunk key or a route key.