Comdial and FXT Manual de usuario descargar pdf (Pagina 25)

Using DID, DNIS, and ANI Features through the Network

The DXP, DXP Plus, and FX Series systems provide the DID, DNIS, and ANI support as part of their basic

software package. A typical application is to service the hub location with analog DID lines or digital service

offering DNIS and ANI. An application such as this centralizes the service to the hub and allows the system to

transparently route callers to the appropriate node. With such an arrangement, all DID block programming is

confined to the hub system.

Direct Inward Dialing (DID) is an analog service that allows callers to dial directly to a system station without

going through the system’s attendant. Dialed Number Identification Service (DNIS) is a feature provided by

T1/E1 service. DNIS supplies the system with the number that the caller dialed. Automatic Number Identification

(ANI) is also a feature often provide by T1/E1 service. ANI supplies the system with the number of the calling

party. Do not confuse ANI with any Caller ID feature.

NOTE: Release 16A supports Caller ID across the network.

When the system detects analog DID information or digital DNIS information, it compares the received digits to

information programmed into an appropriate DID Block Table assigned to the incoming line. If the received digits

match a local extension number, that local station will ring. If the received digits match a remote extension, the

system seizes a network channel to the appropriate node and sends the call to ring at the remote station.

If the incoming call is to a local station and provides ANI information, that information gets processed at the local

system. If the incoming call is to a remote station and provides ANI information, that information gets processed

at the remote system. The network software supports the following ANI services: DID, DNIS, R2 MF, R2 DTMF,

and ISDN-PRI. The network software does not support the E&M service.

In the case of Feature Group D INFO digits delivered over a Feature Group D line, the network system processes

the INFO digits locally and does not deliver them to a remote extension when it routes a call there.

Network Incoming Call Routing

Direct, Delay, Day1, Day2, Night, Enhanced Holiday, and Enhanced Day of Week are ringing modes currently

supported by existing software. Each mode allows the system to route incoming calls to one or more local

extensions. With Release 180, Feature Set 16A, the system supports routing to remote extensions connected to

different nodes. The remote extensions can be any stations, centralized attendants, hunt group pilot numbers, or

group intercoms. Installers can assign every remote extension to each supported ringing mode that the installation

requires. The system supports routing to a remote extension for the following incoming line types: loop start,

ground start, PRI, and BRI.

A key difference in the call routing behavior of remote ringing assignments versus local ringing assignments, is

that while an incoming call can ring at several local stations, that call can ring at only one remote station. They

system checks the remote station ringing assignments before it checks the local station assignments. This means

that if installers have provided a remote extension, that station is the one to which the system routes the call.

Further, once the incoming call routes to a remote station, no other station (local or remote) will ring for the same

call. These same routing rules apply when an incoming call goes unanswered and the delay timer expires. If

installers programmed a remote delay extension, the system cancels the current ringing (local or remote) and rings

the remote delay extension. If installers provide no remote delay extensions, the system routes calls by the local

delay assignments. If installers do not provide either remote or local delay extensions, the system uses the current

ringing assignments for call routing.

To illustrate how the system routes incoming calls across the network in conjunction with system direct and

delayed ringing, examine the following tabular example.

Features – 23

Installing and Using System-to-System Networking IMI89–280

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Comdial and FXT Manual de usuario Pagina 25

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