29 figure 2-1 lcr operational block diagram – Toshiba Strata DK 16 User Manual

Page 53

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PROGRAMMING PROCEDURES-INSTRUCTIONS/SYSTEM RECORDS

SECTION 100-816-302

MARCH 1993

2-29

FIGURE 2-1
LCR OPERATIONAL BLOCK DIAGRAM

CALL COMPLETED

User dials 9.

User dials telephone number (see note).

System analyzes telephone number, and
checks it against most Program 50 options.

• LCR Parameters (50-1)
• LCR Special Codes (50-31 ~ 35)
• LCR Long Distance Information Plan
Number (50-4)
• LCR Local Call Plan Number (50-5)
• LCR Dial Zero Time Out (50-6)

Does system

find a match?

System searches all office code exception
tables entered into LCR plans 1 ~ 8 with
Program 52.

YES

NO

System checks the number to see
if it is an area code or an office code.

YES

NO

Does system

find a match?

YES

NO

System checks all area code
tables entered into the LCR plans
1 ~ 8 through Program 51.

Does system

find a match?

YES

Call

not

completed.

NO

Routes call per the local LCR plan
specified in 50-5 or per long distance
information LCR plan specified per 50-4.

Routes call per the plan cross referenced
by the LCR office code exception table that
contains the match (52-X0; X = 1-8).

System assumes home area code and
routes call per the LCR plan containing
the home area code (Program 51).

Routes call per the
applicable LCR plan.

System checks the time of day. (This must
be set properly by station port 00.)

Selects the appropriate schedule (1, 2 or 3)
for the time as specified in Program 53.

Determines the station's group assignment
as specified in Program 56. Within the
Time of Day Schedule, an LCR station
group is matched to group 1, 2, 3 or 4.

Selects the route definition as defined
by Program 54 for the CO line group
(Program 16), and activates the modified
digits table instructions defined through
Program 55.
The system selects the first available route
definition (1st, 2nd, 3rd or 4th choice) that
represents both CO line group and modified
digits table.

Verifies the CO line access, as defined by
Program 40. Within a CO line group, the
system checks to see if access is allowed
to lines chosen in selected route definition.

Does the

CO line have

access?

NO

YES

STOP.

Call not

completed.

System selects a CO line and dials number.

Is number

an office

code?

NOTE:
If the telephone number is restricted by system
Toll Restriction, the caller will receive busy tone
and LCR will be cancelled immediately.

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