Specifications

CHAPTER 4. Business Feature Package

4-14

DNIS(Dialed Number Identification service) is a feature of 800 or 900 type numbers that

allows the number dialed by the caller to be identified in the telephone system by means of

a sequence of DTMF digits(usually four). This service terminates on E&M tie lines.

These E&M tie line circuits can terminate on either the iDCS E&M card or on a channel of

a digital E1 circuit on an iDCS TEPRI card.

DDI(Direct Dial In). This is the name given to the above three services when they are

provided over an ISDN PRI circuit.

4.1.1.35 DISA(Direct Inward System Access )

Users can call in on specific DISA lines at any time, input a security code and receive

system dial tone. Users can now place internal calls or if permitted, calls using C.O. lines.

The caller must have a tone dial phone and know his/her DISA security code. DISA lines

can be used as both way lines or incoming only and may be active in day mode, night mode

or both. The C.O. lines used for DISA must have disconnect supervision.

4.1.1.36 Direct Trunk Selection

Each station can be allowed access to or denied access from a trunk or trunk group by

access code when LCR is activated. When restricted, the station user must use a trunk key

or a route key.

4.1.1.37 Directory Names

Each station, station group and C.O. line may be assigned a directory name(maximum 11

characters). In addition, each personal speed dial number, system speed dial number and

entry in the DID translation table may be assigned a name(maximum 11 characters).

These names are displayed during calls with these ports and in the case of station and speed

dial names, can be used to originate calls. See the Dial by Name feature(Station Features).

4.1.1.38 DISA Security

Telephone fraud and long distance theft are a serious concern. The OfficeServ 100 provides

a strong DISA security system. If an incorrect DISA passcode is entered repeatedly(as is

the case with ‘hackers’), the DISA system can be automatically disabled temporarily.

Both the number of incorrect passcode attempts and the time that DISA is disabled are

programmable. In addition, all failed attempts to access DISA print on SMDR(if provided)

with a ‘DE’ DISA error flag.

4.1.1.39 Distinctive Ringing

A user knows the type of call received by the type of ring heard. Outside calls have a single

ring repeated while internal calls have a double ring repeated.

In addition any trunk or station can be programmed to ring a keyset with a predefined ring

tone(1-8) or a single line port with a predefined SVMi-8(1-5) selection. This provides for

easy identification of special lines or extensions that ring your phone.