NEC nd-20292 manual OCC Other Common Carrier Code Parameter, Digit Disconnect station

ND-20292

CHAPTER 3

APRIL, 1990

OCC (Other Common Carrier) Code Parameter

If a station is assigned a table with the OCC Flag set, the system will allow the station to dial 10. To allow

the station to choose a particular carrier the table assigned must have the 3 digit OCC identification code entered. This assignment allows only certain OCC codes to be used by restricted stations.

Code Numbers Parameters

Each of the systems’ 32 tables contain eight entries for digit entry. Each item can hold an area code (3 digit) and/or office code (3 digits). Area or office codes to be restricted are placed in deny tables. Area codes or office codes to be allowed are placed in alloWablea.

To simplify the understanding of Code Restriction on the Electra Mark11 system, the discussion will be divided into the following sub sections:

1.1 + dialing area (prefix dialing)

2.Direct dialing area (standard dialing)

3.Equal Access (OCC usage)

4.Puerto Rico area type dialing

Note: Depending on the area the Electra Mark11 system is installed, one of these four sub sections should apply.

360.21 + dialing area (discussion of flow chart) (refer to flow chart Table 360-2)

Step 1.	First	digit	dialed
A.	Digit	0:	disconnect station
B.	Digit	1:	allow second digit (90 to step 3)

C.Any digit 2-9: If digit is not a rejection code let user dial two more digits (go to step 2)

Step 2. Check last 3 digits dialed

A.Lowest possible table assigned to station which contains the three digit number as an office code entry is found.

1.Table is allow: Allow user free dialing

2.Table is deny : Disconnect station

B. No table is found (Check memory block 3E-4)

1.System Allow: allow user free dialing

2.System Deny : disconnect station

Step 3. Second digit dialed

A. Digit 0: (See OCC discussion) ’

B. Digit 1: Disconnect station

C.Any digit 2-9 (go to step 4) Step 4. Third digit dialed

A. Any digit 2-9: Disconnect station

B.Digit 0 or l&o to step 5)

Step 5. Fourth digit dialed

A. Lowest possible table assigned to Station which contains the last three digits dialed, as an area code item, is found.

1.Table is allow:

a.Matched item in table also contains an office code (go to step 6)

b.Matched item in table has only area code : Allow user free dialing

2.Table is deny

a.Matched item in table also contains an office code (90 to step 6)

b.Matched item in table has only area code: Disconnect station

3.No Table is found

a.System Allow: Allow user free dialing

b.System Deny : Disconnect station

Step 6. Allow three more digits to be dialed

A. If item in table matches area and office code dialed:

1.Table is allow: Allow user free dialing

2.Table is deny : Disconnect station

B.If item in table no longer matches for area code and office code dialed, locate next lowest table which contains a three digit entry which matches the area code dialed or a 6 digit entry which matches the area and office code dialed.

1.New table found:

a.Table is allow: Allow user free dialing

b.Table is deny : Disconnect station

2.No Table is found (check Memory Block 3E-4)

a.System allow: Allow user free dialing

b.System deny : Disconnect station

360.3Direct dial area (refer to Table 360-3)

Step 1.	First	digit	dialed
A.	Digit	0:	Disconnect station
	Digit	1:	(90 to step 3)

::Any digit 2-9: If digit is not a rejection code allow user to dial second digit (next step)

Step 2. Second digit dialed

A. Digit 1 or 0: Allow next digit to be dialed (go to step 7)

B. Any digit 2-9: Allow next digit to be dialed (go to step 6)

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