Direct Inward Dialing (Did) - Toshiba Strata DK14 General Description Manual

Direct Inward Dialing (DID)

DID enables incoming calls to ring a specific DN, or any number of stations which share a
common DN, without going through the answering position. Calls over a single DID line can reach
any one of a number of stations, ACD groups, or Distributed Hunt groups, depending upon the last
four digits of the telephone number dialed. DID lines can use DNIS programs to provide DID with
all DNIS features.
Each DID line has a single office code and a block of extension numbers that can individually ring
stations as assigned in system programming. DID lines can directly access the remote maintenance
modem, but not the Strata DK built-in Auto Attendant.
DID lines can optionally provide automatic camp-on busy when callers dial a busy station on
incoming DID calls. This feature provides a camp-on tone and distinctive LED flash at the busy
station.
If a second DID call is received at a busy station that has only one PDN button, the station user
hears muted camp-on tone, and the second call camps-on (assuming camp-on has been turned on).
If camp-on is off, the second caller hears busy tone unless forwarded to another station.
If a second DID call is received at a busy station that has more than one primary PDN button, the
station user has the option of hearing muted camp-on tone and the second call camp-on, or the
second call rings continuously on the other PDN button. This enables the station user to answer
multiple calls to their DID number, including transferred calls. Two appearances of the PDN are
recommended for this operation. Up to four PDN appearances may be used for some applications.
Outgoing calls can be made on two-way DID lines. However, ABR is not supported for those two-
way lines. DID lines can be either DTMF or dial pulse signaling. Also note that a secondary
protector is required for each DID circuit.
DID calls call forward externally if the station has Call-Forward External activated.
DID lines can be provided through analog circuits on the TDDU and RDDU interface or through
digital circuits on the T1/DS-1 RDTU interface. An optional DTMF tone receiver (K5RCU or
RRCS) is typically required for DID line DTMF operation.
Benefits
Provides efficient, direct calling to individual stations without going through the answer position
and reduces the load on call answering positions. It also gives "private line" service to many
individuals at a lower cost.
Strata DK Feature Description 5/99
System Availability
Unavailable on DK14
Optional on DK40i/DK424
Requirements
Typicall requires DTMF tone receivers
Features
System Features
41