CLLI — Common Language Location Identifier
Qué es CLLI?
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A CLLI code (Common Language Location Identifier) is a standardized alphanumeric code used across the North American telecommunications industry to identify a specific location or facility belonging to a service provider: a central office, a data center, a switch site, or a customer premises. Carriers print CLLI codes on provisioning orders, porting paperwork, and interconnection agreements so every party to an order names the same physical site without ambiguity.
More detail
The code comes in two lengths, eight or eleven characters. An eight-character CLLI identifies a network site, with the leading characters encoding the city and state (CHCGIL reads as Chicago, Illinois); an eleven-character CLLI extends the site code to name the specific network entity or customer premises on that site, such as a particular switch. The conventions descend from the Bell System's Common Language program and are administered today under Telcordia (iconectiv) practice, so the same code means the same place to every carrier that reads it.
A buyer meets the CLLI on carrier paperwork rather than on a rating sheet. The letter of authorization and the customer service record that accompany a number port name the losing carrier's site by CLLI; the local service request and the firm order commitment that provision a new circuit do the same; interconnection agreements and trouble tickets use the code to pin down which building or switch a dispute concerns. Wherever two carriers have to agree on one physical site, the CLLI is the name they agree on.
Two neighboring identifiers are worth keeping distinct. The Location Routing Number (LRN) is a ten-digit telephone number that identifies a switch so calls to ported numbers reach the right carrier, and the Operating Company Number (OCN) identifies a carrier as a company rather than a place; the CLLI identifies the place itself. For a Devotel Orbit tenant the codes stay on the carrier side of a port or a provisioning order: the paperwork the tenant signs references them, and the glossary entry exists so the tag on that paperwork resolves to a real concept instead of an acronym.
Preguntas frecuentes
- What does CLLI stand for?
- CLLI stands for Common Language Location Identifier. The conventions grew out of the Bell System's Common Language program and are maintained today under Telcordia (iconectiv) practice, giving every North American carrier one shared naming scheme for locations and facilities.
- What is a CLLI code used for?
- Naming a specific carrier location or facility without ambiguity: the central office a number port leaves, the switch a circuit provisions into, the customer premises a trouble ticket concerns. It appears on letters of authorization, customer service records, local service requests, firm order commitments, and interconnection agreements.
- Is a CLLI code the same as an LRN?
- No. A CLLI code identifies a physical location or facility. The Location Routing Number (LRN) is a ten-digit number that identifies a switch so calls to ported numbers route to the right carrier. A porting order can carry both, and they answer different questions: which place, and which switch routes this number.
- Where do I find a CLLI code?
- On the carrier documents that accompany any order touching a physical site: the customer service record (CSR), the letter of authorization (LOA), local service requests, and interconnection agreements. Carriers can also look a site up in the routing databases that publish facility assignments.
See also
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