NEC nd-20292 manual Chapter

station in the system or network. The ability to originate or receive Camp-On (a form of Transfer to busy extensions) is based on the Class of Service assignment of both stations.

CENTREX RINGING provides two distinctive tone

signals to identify internal CENTREX or PBX incoming calls from outside calls. Centrex Ringing requires the support of a CPU-EB3 (or higher revision level) ETU and a COT-EB ETU.

CLASS OF SERVICE is a programming assignment to allow or deny access to Camp-On OriginatelReceive,

Call Forward, Operator Restriction, Data Line Security, Station Lockout, Paging Access (Origin&e), Trunk to Trunk Transfer, Forced Account Code, and LCR Priority features. Incoming, Outgoing and Code Restrictions are assigned separately.

A CLOCK/CALENDAR DISPLAY is provided to all Electra Mark11 Multiline Terminals with an LCD (see Figure 100-5 Typical Clock Calendar Display).

0 7: 43 SEP 04 WED

.

Figure 100-5 Typical Clock Calendar Display

This display is on the bottom line of the LCD; ie: displays the time of day, 07143, the month, SEP, the date, 04, and the day, WED. This display is only

removed during off Iine programming mode when the

Calculator mode is in use or during certain data communication operations.

CO ADD-ON MODULE. The EDE-30-( ), Revision B (or higher level), can be installed and programmed as a CO Add-On Module to allow an Attendant Position the ability to have direct access to the system’s forty

maximum outside line terminations. The system’s maximum of six EDE-30-( ) applies to both (DSSIBLF

and CO Add-On) applications. Only four units can be utilized as a CO Add-On Module (one per Attendant Position). The system must also be equipped with a CPU-EB (or higher revision level) ETU. Lines that appear at the attendant’s Multiline, Terminal cannot also appear at the CO Add-On Module.

CO DIGIT RESTRICTION provides the ability to restrict the number of digits that can be dialed from a

station on a CO line. CO Digit Restriction must be supported by a CPU-EB3 (or higher revision level) ETU and is programmable on a per station basis.

ND-20292

CHAPTER 1

APRIL, 1990

CODE/CALL RESTRICTION aids in the ability to

tailor the station dialing restriction to every customer’s individual needs. The Electra Mark11 offers an advanced network of restrictions to control outside calls, based upon area and local office codes. The

restriction feature provides override capability on

trunk group and system speed dial basis and

accommodates Equal Access to secondary common carriers.

CONSECUTIVE SPEED DIAL simplifies dialing complicated sequences of numbers such as those used for some specialized common carriers, credit card, and

other applications. All Electra Mark11 Multiline Terminals have the capability to Consecutively Speed Dial, with access to System and Station Speed Dial memories.

CONSULTATION HOLD offers the Electra Mark11

system user the convenience of originating a call to a second station in the system from the same line used for an existing call. This allows the user to consult

with someone while holding the outside party. Afterwards, the user may initiate a Conference, return to the outside party, alternate between the two calls (Broker’s Call), or Transfer the outside party to the consulted internal party.

DATA COMMUNICATION is made available when the system is equipped with a CPU-EB (or higher revision level) ETU and with a DTA-E Unit installed in each Multiline Terminal (ETE-GD-( ), ETE-16D-( )

and ETE-16K-1) requiring this feature. The DTA-E Unit provides a terminal user with the capability of

Voice and Data Communication simultaneously. These data ready Multiline Terminals require ESI-EB ports, which are associated with the first three CCUs.

DATA LINE SECURITY provides a station with protection from receiving audible tones (such as Camp- On or Override) while busy, This prevents disruption of ongoing data transmission.

DC POWER OPERATION may be desired for its simplicity of providing standby power. The system can

be powered by a local -48V dc source. When so required, each CCU must be equipped with a PSE-DD- 1 PSU. This PSU is installed in place of the PSE-AD-1 PSU.

DELAY ANNOUNCEMENT (UCD) occurs when an incoming DIT call to a UCD group encounters all UCD

extensions busy or receives no answer within a

preprogrammed period of time. The call is queued and

receives a recorded announcement after a

predetermined interval. A CPU-EB3 (or higher revision level) ETU is required to support this feature.

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