Direct Inward Dialing (Did); Did Dialed Number Translation; Flexible Did Service Compatibility; Did Camp-On - NEC UNIVERGE SV9100 Features And Specifications

Direct Inward Dialing (DID)

Description
Direct Inward Dialing (DID) lets outside callers directly dial system extensions. DID saves time for callers
who know the extension number they wish to reach. To place a DID call, the outside caller dials the local
exchange (NNX) and additional digits to ring the telephone system extension. For example, DID number
926-5400 can directly dial extension 400. The caller does not have to rely on attendant or secretary call
screening to complete the call.
Direct Inward Dialing (DID) requires DID service from Telco.
In addition to direct dialing of system extensions, DID provides:

DID Dialed Number Translation

Flexible DID Service Compatibility

DID Intercept

DID Camp-On

There are 20 DID Translation tables that can be divided between 4000 entries.
DID Dialed Number Translation
DID allows different tables for DID number translation. This gives you more flexibility when buying DID
service from Telco. If you cannot buy the exact block of numbers you need (e.g., 301~556), use the
translation tables to convert the digits received. For example, a translation table could convert digits
501~756 to extension numbers 301~556.
The UNIVERGE SV9100 system has 4000 DID Translation Table entries that you can allocate among
the 20 DID Translation Tables. One translation is made in each entry. For a simple installation, you can
put all 4000 entries in the same table. For more flexibility, you can optionally distribute the 4000 entries
among the 20 tables.
In addition to number conversion, each DID Translation Table entry can have a name assigned to it.
When the DID call rings the destination extension, the programmed name is displayed.
Flexible DID Service Compatibility
With three-digit service, the Telco sends three digits to the system for translation. Be sure to program
your system for compatibility with the provided Telco service. For example, if the Telco sends four digits,
make sure you set up the translation tables to accept four digits.
The system is compatible with Dial Pulse (DP) and DTMF DID signaling. DID trunks can be either wink
start, immediate start, 2nd Dial or Delay.
DID Camp-On
DID Camp-On sets what happens to DID calls to busy extensions when you have Busy Intercept
disabled. With DID Camp-On enabled, a call to a busy extension camps-on for the DID Ring No Answer
Time. It then diverts to the programmed DID Intercept extension ring group or Voice Mail. Without DID
Camp-On, the caller to the busy extension hears only busy tone.
DID Routing Through the VRS
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