User`s guide

17-24 Dialing translations
How dialing translations translate numbers
Standard 1.0 System Administration Guide January 1998
National number
translation
A national number is always in the following format:
• area/city code + exchange code + station number
It is translated in the following manner:
Is there
a translation
number’s Area/City
No
the number’s
Exchange Code
found in that
table?
Yes
Input Number
Code?
table with the
Yes
Strip the Area/City Code
from the number.
Is
Attach the Prefix for
Exchange Codes IN the
the number’s
Area/City Code
the same as the
Local Area/
Is
Table to the number.
Yes
Strip the Area/City Code
from the number.
Attach the Prefix for
Exchange Codes NOT IN
the Table to the number.
No
City Code?
Attach the Long
Distance Dialing Prefix
Output Number
to the number.
Strip the Area/City Code
from the number.
Attach the Local Dialing
Prefix to the number.
No
another trans-
lation table with
the number’s Area/
Is there
No
Yes
City Code?