Circuit ID

Circuit ID

A circuit ID is a company-specific identifier assigned to a data or voice network between two locations. This circuit, for example a tie line, is then leased to a customer by that ID. A subscriber having an issue with a circuit contacts the telecommunications provider to provide this circuit ID for action on the designated circuit.

Contents

Telecom Circuit ID formats

The LEC circuit ID's are based on Telcordia Technologies' Common Language Coding. At one time, the abbreviations were meaningful (for example, HC for hi - capacity) but the complexity of the business no longer allows for it.

XX/YYYY/000000/111/CC/SEG prefix/service code - service code modifier/serial #/suffix/company identifier/segment name

  • Prefix, set by administration areas for each company. They may or may not be based on LATA
  • Service code, the type of service this circuit is providing
  • Service code modifier, modifies the service code, often used for different billing options.
  • Serial number, 6 digit numeric identifier
  • Suffix, if a service has multiple legs or drops this will further identify the location.
  • Company identifier, identifies the controlling LEC.
  • Segment, the drop NAME for a multi - point circuit.

Example:

  • 73/HCGS/123456/000/NE is a T1 Circuit by New England Telephone
  • 44/AQDU/987654/000/G4 is a HDSL Circuit by G4 Telecom

Service Codes

Qwest

Serial number format: AA/BBBB/CCCCCCC/DDD/EE/F[1]

  • A Prefix: 1–2 alphanumeric characters. Optional.
  • B Service Code/Modifier: 2–4 Characters. Required.
  • C Serial Number: 1–4 digits. Required
  • D Suffix: 3 character suffix to the serial number. May be required. (Rarely used)
  • E CO (Company) Code: 2–4 alphabetic characters (NW, MS, PN) Required.
  • F Segment: 1–3 alphanumeric characters. Optional for point to point interfaces.

Telephone Number Format: AA/BBBB/CCC/DDD/EEEE/FF/G[1]

  • A Prefix: Alphanumeric characters. Required if it exists.
  • B Service Code & Modifier: 2–4 alphabetic characters. Required for non-DSL numbered circuits.
  • C NPA: 3 digits. This is a required field.
  • D NXX: 3 digits. This is a required field.
  • E Line: 4 digits. This is a required field
  • ? Extension: 1–5 alphanumeric characters. This is an optional field.
  • F For states: AZ, CO, ID, MT, NM, UT, WY, alphas not accepted; convert D1 to 0001, D2 to 0002, etc.
  • G Segment: 1–3 alphanumeric characters. This is an optional field. rarely used

References

  1. ^ a b "Guide to Circuit ID Formats". Qwest. http://www.qwest.com/wholesale/systems/WebHelp/reference/circuit_id_formats_guide.htm. Retrieved 2011-03-08. 

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