COMMON LANGUAGE LOCATION IDENTIFICATION (CLLI) CODE ...

TABLE B
COMMON LANGUAGE LOCATION IDENTIFICATION (CLLI)
GENERAL REFERENCE LIST OF ENTITY CODES
BY ENTITY* CATEGORY
ISS 5, SECTION 795-100-100
ENTITY CLU ENTITY CODE FORMAT
CATEGORY ENTITY (CHARACTER POSITIONS9, 10, 11)
SWITCHING End Office
(Formerly Complete Switching System:
Traffic Units) Crossbar MG(n)
MG(al)
Step-By-Step SG(n) SG(al)
Electronic-Analog CG(n) CG(al)
-Digital DS(n) DS(al)
Single Entity (n)(n)(n) (n)(n)(al)
Multiple Entity - (n)(n)(al)
Tandem Office
Individual Tandem (n)(n)T
Tandem Combinations:
Tandem/Tandem C(n)T
Tandem/Switchboard B(n)T
Tandem/Marker Group or (n)GT
Control Group
Special Switching Applications:
Common Control Switching Arrangements Z(a)Z
Remote Switching Systems RS(n)
Teletypewriter Switching Systems X(a)X
Concentrator CT(xl)
Switchboard and Desk Terminations Refer to Table C
(Formerly called Traffic Switchboards
and Desks)
Miscellaneous Switching Termination Entities Refer to Table D
(Formerly called Miscellaneous Traffic
Unit Terminations)
NONSWITCHING
(Formerly Plant, Frames (all types) F(x)(x)
or Administrative
Units) All other Nonswitching Entity Codes Refer to Table E
Notes:
* Formerly called Building Subdivision Code, Traffic, Plant, and Administrative Unit codes.
(al) = Alpha Characters B, D, I, 0, T, U, W, and Y are not permitted in this character position. The
alpha character in this position indicates that combinations of switching entities are represented.
(a) = Any alpha character, A-Z
(n) = Any numeric character, 0-9
(x) = Any alpha or numeric character, A-Z or 0-9
(xl) = Any alpha or numeric character, except B, D, I, 0, T, U, W, and Y.
Upper case character displayed in the code format is the required character for that type of entity.
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