When using the Open Numbering Plan, the following combination of digits can be used:
When the Access Code is set for two digits, the Office Code can have only two digits.
Access Code = XX
Office Code = XX
Station Number = XXXX
When the Access Code is set for one digit, the Office Code can have two or three digits.
Access Code = X
Office Code = XX or XXX
Station Number = XXXXX
When a call is originated from Office A to Office C, 8 + 58 + 2100 is dialed.
8 = Access Code for F-Route in PRG 11-01-01
858 = Office Code for System C in PRG 44-02-01 (F-Route Dial Analyze Table)
2100 = Station Number
The Station Number can have two to eight digits.
Program 50-04-01 allows a maximum of four digits, including the Access Code and the
Office Code.
2100 210121012100
21012100
KTS A
Office Code 56
KTS C
Office Code 58
KTS B
Office Code 57
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