Direct Inward Dialing - NEC DS1000 Product Description

Section 3: Features

Direct Inward Dialing

50 N Section 3: Features
Directly dial system
extensions from outside the
system.
ring the telephone system extension. For example, DID number 926-5400 can directly ring exten-
sion 400. The caller does not have to rely on an attendant or receptionist to handle the call. Direct
Inward Dialing is an efficient way to handle incoming calls, since callers can reach a large block of
extensions over a relatively small number of DID trunks. Direct Inward Dialing requires a T1 PCB
and T1 DID service and a block (range) of DID numbers from the telco.
In addition to direct dialing of system extensions, DID provides:
DID Dialed Number Translation
G
The system provides a 100-entry DID Translation Table. This table gives you more flexibility
when buying DID service from the telco. If you can't buy the exact block of numbers you need
(e.g., 301-456), use the translation table to convert the digits received. For example, a transla-
tion table could convert digits 501-599 to extension numbers 301-399.
Flexible DID Service Compatibility
G
You can program the system to be compatible with DID service of varying lengths (up to 8
digits). DID service is typically 3 or 4 digits long. With 4 digit service, the telco sends 4 digits
to the system for translation. With 3 digit service, the telco sends 3 digits to the system for
translation. Be sure to set up your system for compatibility with the provided telco service.
Additionally, the system is compatible with Dial Pulse (DP) and DTMF DID signaling. DID
trunks can be either wink start or immediate start.
DID Intercept
G
DID Intercept automatically reroutes DID calls under certain conditions. There are 3 types of
DID Intercept:
- Busy/DND Intercept
If a caller dials an extension that is busy or in Do Not Disturb, the system routes the call to
the extension's programmed overflow destination.
- Ring No Answer Intercept
If a caller dials an extension that is unanswered, the system routes the call to the exten-
sion's programmed overflow destination.
- Busy/DND and Ring No Answer Intercept
If a caller dials an extension that is busy, in Do Not Disturb, or is unanswered, the system
routes the call to the extension's programmed overflow destination.
G DID Camp-On
DID Camp-On sets what happens to DID calls to busy extensions when you have Busy/DND
Intercept disabled. With DID Camp-On enabled, a call to a busy extension camps-on to the
extension. Without DID Camp-On, the caller to the busy extension just hears busy tone (or
follows the intercept programming if enabled).
For outgoing calls, DID trunks operate identically to loop start trunks.
Availability: DS2000 only.
Direct Inward Dialing (DID) lets outside callers directly dial sys-
tem extensions. DID saves time for callers who know the exten-
sion number they wish to reach. To place a DID call, the outside
caller dials the local exchange (NXX) and additional digits to
DS1000/2000 Product Description