NEC nd-20292 manual Section CODE/CALL Restriction, 3E8, 3E9

SECTION 360

CODE/CALL RESTRICTION

360.1 General

To provide dialing restrictions on an individual station basis, a method of code restriction has been designed into the Electra Mark11 system. The Electra Mark11 utilizes a pattern of 32 system tables containing specific area and office codes. Each table is set as an allow or deny table. Allowing restricted stations to dial only specific area and office codes is then accomplished by assigning one or more tables to the stations as required. If operator restriction (Memory

Block lD7) is not assigned to’a’station, then it is not restricted from dialing any number. This section will fully explain this procedure. It is recommended that before attempting to program any code restrictions that this section be fully reviewed.

	Table 360-l
1-t	I
I;ky;RY	CODE TABLE NUMBER

1 3E7	1 OCCFLAG		1				I
3E8	OCC	CODE		1		2
	ASSIGNMENT
		1 NO.	AREACODE		OFFICE	CODE
	c	’	y		I	I
			I	I	I	I
3E9	;	;:	I		I	I
			I	I	I	I
		5	I	I	I	1
	E	6	I	I	I	I
		7	I	I	I	I
I	I
		Is	II	l	I I	1	I

There are 32 system code tables (Example shown in Table 360-l) available on the Electra Mark11 system. Each table has several parameters assignable.

Allow/Deny Parameter

Each table can be assigned as an allow or a deny table. If a table is set as a deny table, stations assigned this table will be restricted from dialing any area code or area + office code, or office code entered into the table. If a station is assigned a deny table and an allow table that both contain identical area or area + office codes, or office codes, the system will allow the station to dial the number if the allow table number comes before the deny table number.

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ND-20292

CHAPTER 3

APRIL, 1990

Example: Operator restriction is assigned to station 104. (M.B. lD7, LK5 = ON)

A.Station 104 is assigned Table 01 and Table 14

B.Table 01 is assigned as an allow

C.Table 14 is assigned as a deny

D.Table 01 has its first entry programmed for 516 753

E.Table 14 has its first entry programmed for

516*** (* represents digits 1 - 0, #, and *)

After the 516 is dialed, the system will inspect all the tables assigned to this station starting with the first table then to the next in numerical order; the Electra Mark II system will look for a match between the number entered into a table and the number dialed.

The example shows that if 516 is dialed there will be an area code match in Table 01 (containing 516-7531 and Table 14, (containing 516). The system only sees the match for Table 01 as it scans the tables in numerical order. If the system first saw the match in Table 14, the station user would have been restricted because Table 14 has been set as deny. Although there is a match in Table 01, it is not a complete match because the 516 in the table also contains an office code (753).

The system will, therefore, allow Station 104 to dial 3 more digits. If 753 has not been dialed, it no longer sees the match in Table 01. The system will, therefore, only see the match in Table 14 (where an office code has not been specified). If 753 had been dialed, the match would still be seen in Table 01. This example shows a way to restrict a station from dialing all but one office code in a particular area code.

Trunk Group Parameter

Each table can be assigned a maximum of four trunk groups. When a code restricted station dials out on a particular trunk group, the system will only look at those tables which are assigned to the station and to the trunk group the station is dialing out on. This allows different restrictions to be set on a station on the trunk group that is accessed.

OCC (Other Common Carrier) Flag Parameter

Each table has an OCC Flag Parameter which can be set or not. When a station user dials a second common carrier, it is necessary to first dial lo-XXX (XXX identifies the carrier service to be used) before the

actual telephone number. To allow/deny a toll restricted station to dial beyond 10, the OCC Flag Parameter must be set in at least one table assigned to the station.

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