Direct Inward Dialing (Did) - NEC SL2100 Features And Specifications Manual

ISSUE 1.0 SL2100

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 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 requires DID service from Telco.
D
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 1000 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 SL2100 system has 1000 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 800
entries in the same table. For more flexibility, you can optionally distribute the 1000 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 displays.
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.
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
DID calls can optionally route through the VRS. The DID caller hears an initial Automated Attendant
Greeting explaining their dialing options. If the caller misdials, they hear a second greeting with
additional instructions. For example, the first Automated Attendant Greeting can be, "Thank you for
calling. Please dial the extension number you wish to reach or dial 9 for the operator." If the caller
inadvertently dials an extension that does not exist, they could hear, "The extension you dialed is
unavailable. Please dial 9 for assistance or dial # to leave a message so we can call you back."
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