-
|
DEFINITIONS
|
- Activation Deadline
|
Six
months from the original effective date returned on the Part 3
and entered on the BCR/BCD screen in BIRRDS. A Part 4 should be
returned to the Pooling Administrator by this date.
|
-
Active Block
|
A
thousands-block assigned by the PA and implemented in the PSTN
for specific routing requirements as of the block effective
date.
|
-
Administrative Constraint/Reason
|
A limitation of the Point of
Interconnection or Switching Entity where an existing block
and/or TNs cannot be used for designated network routing and/or
rating of PSTN calls. An example of a constraint would be the
limitation in the administration of a thousands-block across
multiple switches in a rate area and would require a waiver from
the FCC Commission.
|
-
Administrative Numbers
|
Administrative numbers are numbers used by telecommunications
carriers to perform internal administrative or operational
functions necessary to maintain reasonable quality of service
standards. FCC 00-104 §52.15 (f)(1) (i).
Subcategories of administrative numbers are: test numbers,
employee/official numbers, Location Routing Numbers, Temporary
Local Directory Numbers (TLDN), soft dial tone numbers and
wireless E911 emergency service routing digit/key (ESRD/ESRK)
numbers. (FCC 00-104 ¶ 36).
|
-
Administrative Operating Company
Number (AOCN)
-
|
A four character numeric or alphanumeric that identifies the administrator of one (or more) data record contained in Telcordia’s Business Integrated Rating and Routing Database System BIRRDS. Numeric/alphanumeric
AOCNs are determined by Operating Company Number (OCN) assignment. The AOCN further identifies the entity authorized by the code holder to input and maintain data into BIRRDS.
|
- Affected
Parties
|
Affected
parties are a) those entities that have applied for and/or
received thousands-block (NXX-X) assignments within the NXX code
b) administrative entities involved in number administration,
number portability or number pooling.
|
-
Aging Numbers
|
Aging
numbers are disconnected numbers that are not available for
assignment to another end user or customer for a specified
period of time. Numbers previously assigned to residential
customers may be aged for no more than 90 calendar days.
Numbers previously assigned to business customers may be aged
for no more than 365 calendar days. (FCC 00-104 §52.15 (f)(1)
(ii) See Erratum in CC Docket 99-200, released July 11, 2000).
An aging
interval includes any announcement treatment period, as well as
the vacant telephone number intercept period. A number is
disconnected when it is no longer used to route calls to
equipment owned or leased by the disconnecting subscriber of
record.
|
- Allocated/Assigned Block
|
A thousands-block is
allocated/assigned to an SP when the block information has been
entered into BIRRDS by the PA.
|
- Allocation Date
|
The
Allocation Date is the date established by the PA when the PA
officially makes the block assignment to an SP.
|
- Applicant
|
SPs who
submit a block request to the PA for the purpose of being
assigned a thousands-block for their use.
|
- Assigned
Numbers
|
Assigned
numbers are numbers working in the PSTN under an agreement such
as a contract or tariff at the request of specific end users or
customers for their use, or numbers not yet working but having a
customer service order pending. Numbers that are not yet
working and have a service order pending for more than five
calendar days shall not be classified as assigned numbers. (FCC
00-104 §52.15 (f)(1) (iii))
Ported-out numbers should be included as a subcategory of
assigned numbers. (FCC 00-104 ¶ 36).
|
- Audit
-
|
The
accumulation and evaluation of evidence about documented
information of an auditee to determine and report on the degree
of compliance with INC industry guidelines.
|
- Auditee
-
|
The SP/NANPA/PA
that is the subject of an audit. |
- Auditor
|
The FCC Common Carrier Bureau’s Audits
Branch of the Accounting Safeguards Division or its other
designated agents perform audits of US numbering resources. (FCC
00-429 ¶ 90). State Commissions also may conduct audits. (FCC
01-362 ¶101.
|
- Authorized Representative of an Applicant
|
A person
from an applicant's organization or its agent that has the legal
authority to take action on behalf of the applicant.
|
- Available Numbers
|
Available numbers are numbers that are available for assignment
to subscriber access lines, or their equivalents, within a rate
area and are not classified as assigned, intermediate,
administrative, aging, or reserved. Available numbers is a
residual category that can be calculated by subtracting a sum of
numbers in the assigned, reserved, intermediate, aged, and
administrative primary categories from the total of numbers in
the inventory of a code or block holder (FCC 00-104 §52.15
(f)(1) (iv)). |
- Block
Applicant
|
See
“Applicant.”
|
- Blocks
Available for Assignment
-
|
Thousands-blocks (NXX-X) within the industry inventory pool rate
area which are within an NPA/NXX that is flagged as LNP capable
in the LERG Routing Guide and the NPAC, and which are available
for assignment within the SP’s rate area.
|
- BCR/BCD
|
Block
Code Record/Block Code Data |
- Block
Donation Date
|
The
deadline for SPs to donate their thousands-block(s).
|
- Block
Donation Identification Date
|
The
deadline for SPs to report their surplus of thousands-blocks to
the PA. This is also the date when SPs may begin to port all
TNs in contaminated thousand blocks that they are donating to
the pool. All blocks to be donated must be portable in the NPAC
and LERG Routing Guide.
|
- Block
Exhaust
|
a) When
used by the Block Holder in applying for additional
thousands-blocks, a point in time at which the quantity of TN's
within existing thousands-block(s) which have been assigned to
the Block Holder equals zero for a rate area.
b) When
used by the PA in applying for additional NXX codes, block
exhaust is defined as a point in time at which the quantity of
thousands-blocks within the rate area which are “available for
assignment” equals zero.
|
- Block
Holder
|
The
entity to which a thousands-block (NXX-X) has been assigned for
use.
|
- Block
Protection Date
|
The
deadline for SPs to donate their thousands-blocks. This is also
the date by which all providers participating in thousands-block
number pooling in the NPA must have all their Intra Service
provider ports completed. Five business days later, Telcordia
will update the LERG Routing Guide with thousands-blocks SPs are
retaining.
|
- BIRRDS
|
The Telcordia™
Business Integrated Routing and Rating Database System contains
data in the routing and rating of calls. Contains a complete
description of all Local Exchange Companies’ networks in the
NANP Area and pertinent information relating to the networks of
other code holders. This provides information for, (1) message
routing, (2) common channel signaling call setup routing, and
(3) operator service access routing. Data supports all CO Codes
assigned through these Guidelines, as well as all CO Codes in
place prior to the existence of these Guidelines, and covers all
Numbering Plan Areas (NPAs) administered under the North
American Numbering Plan (NANP).
|
- Central
Office (CO) Code
|
The sub-NPA
code in a TN, i.e., digits D-E-F of a 10-digit NANP Area
address. Central office codes are in the form "NXX", where N is
a number from 2 to 9 and X is a number from 0 to 9. Central
office codes may also be referred to as "NXX codes" (47 C.F.R. §
52.7(c)).
|
- Certification
|
The authorization of a
carrier by a regulator to provide a telecommunications service
in the relevant geographic area. FCC 00-104 § 52.15 (g)
requires that applications for initial numbering resources
include evidence that the applicant is authorized to provide
service in the area for which numbering resources are being
requested.
|
- CLLI™
|
A
CLLI Location Identification Code
is an eleven-character
alphanumeric descriptor used to identify switches, points of
interconnection, and other categories of telephony network
elements and their locations. Companies that are licensees of
Telcordia™ COMMON LANGUAGE®
Products can refer questions to their company's COMMON LANGUAGE
Coordinator. If you do not know if you are a licensee, do not
know your Coordinator, or are a licensee with questions
regarding CLLIs, call the COMMON LANGUAGE Hotline,
877-699-5577. Alternatively, or if you are not a
licensee, obtain further information at
www.commonlanguage.com. (COMMON
LANGUAGE is a registered trademark and CLLI is a trademark of
Telcordia Technologies, Inc.)
|
-
CO
Code Administrator
|
Entity(ies) responsible for the administration of the NXX codes
within an NPA. |
- Code
Holder
|
An
assignee of a full NXX code which was allocated by the CO Code
Administrator. Where the Code Holder is participating in
thousands-block number pooling, the Code Holder becomes a LERG
Assignee at the Block Donation Date.
|
- Contamination
|
Contamination occurs when at least one telephone number within a
thousands-block of telephone numbers is not available for
assignment to end users or customers. Blocks contaminated up to
and including 10 percent are eligible for donation. For
purposes of this provision, a telephone number is “not available
for assignment” if it is classified as administrative, aging,
assigned, intermediate, or reserved as defined in FCC rules (FCC
00-104, §52.7 (h)).
|
- Critical Industry Inventory
Insufficiency
|
Critical
industry inventory insufficiency exists for a rate area when the
available resources in the industry inventory pool for a
particular rate area fall below the actual and/or forecasted
demand for the next 66 calendar days.
|
- Dealer Numbering Pools
|
Numbers
allocated by a service provider to a retail dealer for use in
the sale and establishment of service on behalf of that service
provider. See the definition of “Intermediate Numbers” below.
(FCC 00-104 ¶20)
|
- Donation
|
The term
“donation” refers to the process by which carriers are required
to contribute telephone numbers to a thousands-block number pool
(FCC 00-104, §52.7(i)).
|
- Effective Date
|
The date
by which routing and rating changes within the PSTN must be
complete for the assigned thousands-block or the assigned CO
Code. Also, the date by which the thousands-block becomes an
active block. (Also referred to as “the LERG Routing Guide
effective date.”)
|
- Forecast
Report
|
All
thousands-block number pooling service providers shall provide a
Thousands-Block Forecast Report, on a semi-annual basis, by rate
area to the Pooling Administrator. The Thousands-Block Forecast
Report is based on a 12-month interval. A Thousands-Block
Forecast Report will be sent by service providers to the PA for
all number resource requirements in thousands-block number
pooling rate areas, including full NXX Codes as well as
thousands-blocks. The forecast submitted is incremental above
the quantity of thousands-blocks already allocated in
the service provider's inventory.
|
- INC
|
Industry
Numbering Committee (INC) provides an open forum to address and
resolve industry-wide issues associated with the planning,
administration, allocation, assignment and use of numbering
resources and related dialing considerations for public
telecommunications within the North American Numbering Plan (NANP)
area.
|
- Initial
Block
|
An
initial block or “footprint” block is the first NXX-X block that
a service provider receives in a rate area where the SP has no
other assigned resources (FCC 00-104, ¶ 47 and 191, §52.50 (C)
(2)).
|
- In
Service
|
A code
or block for which local routing information has been input to
the LERG Routing Guide and the carrier has begun
to activate and assign numbers within the NXX code or NXX-X
block to end users (FCC 00-104, ¶240).
|
- Intermediate Numbers
|
Intermediate numbers are numbers that are made available for use
by another telecommunications carrier or non-carrier entity for
the purpose of providing telecommunications service to an end
user or customer. Numbers ported for the purpose of
transferring an established customer’s service to another
service provider shall not be classified as intermediate numbers
(FCC 00-104, §52.15 (f) (1) (v)).Numbers such as dealer number
pools should be included as a subcategory of intermediate
numbers. (FCC 00-104 ¶ 36).
|
- Intra-service Provider Port
|
An
intra-service provider port allows an SP to retain unavailable
TNs in contaminated thousands-blocks that are being donated to
an industry inventory pool. Specifically, numbers assigned to
customers from donated thousands-blocks that are contaminated
will be ported back to the donating carrier to enable it to
continue to provide service to those customers. An
intra-service provider port can also be used to move a TN(s)
from one switch serving a rate area to another switch serving
the same rate area where LRN-LNP technology is in use.
|
-
Inventory
|
The term
“inventory” refers to all telephone numbers distributed,
assigned or allocated:
(1)
To a service provider, or
(2) To a Pooling Administrator for the
purpose of establishing or maintaining a thousands-block number
pool (FCC 00-104, §52.7 (j)).
|
-
(Industry) Inventory Pool
|
Used in thousands-block number pooling
to describe a reservoir of unallocated thousands-blocks
administered by the PA for purposes of assignment to SPs
participating in thousands-block number pooling.
|
- Jeopardy
|
A
jeopardy condition exists when the forecasted and/or actual
demand for NXX code resources will exceed the known supply
during the planning/implementation interval for relief.
|
- LATA
(Local Access and Transport Area)
|
Also
referred to as service areas by some BOCs, a LATA serves two
basic purposes: to provide a method for delineating the area
within which the BOCs may offer services and, to provide a basis
for determining how the assets of the former Bell System were to
be divided between the BOCs and AT&T at divestiture.
|
- LERG™
Routing Guide
|
The
Telcordia™ LERG™ Routing Guide contains information about the
local routing data obtained from the BIRRDS. This information
reflects the current network configuration and scheduled network
changes for all entities originating or terminating PSTN calls
within the NANP.
-
Contact
Information:
-
Telcordia
Routing Administration (TRA)
8 Corporate Pl. 3N141
Piscataway, NJ 08854-4156
-
732-699-6700
-
tra@telcordia.com
|
- LERG
Assignee
|
The SP
responsible for default routing functions associated with a
pooled NXX code.
|
- LNP Port
-
|
The
process of moving a TN from one SP to another SP using LRN-LNP
technology. See also “Intra-Service Provider Port” definition.
|
- Location
Routing Number (LRN)
|
The
ten-digit (NPA-NXX-XXXX) number assigned to a switch/POI used
for routing in a permanent local number portability
environment. See “Administrative Numbers” definition.
|
- Mandated
Implementation Date
|
The date
identified by the appropriate regulatory body by which
thousands-block number pooling is to be implemented.
|
- Months
to Exhaust
|
When
used by SPs to document the need for an additional block:
= TNs Available for Assignment
________________________________
Average Monthly Growth Rate
When
used by the PA to document the need for an additional CO Code:
= Blocks Available for Assignment
_________________________________
Average Monthly Growth Rate
|
- NANP
(North American Numbering Plan)
|
A
numbering architecture in which every station in the NANP Area
is identified by a unique ten-digit address consisting of a
three-digit NPA code, a three digit central office code of the
form NXX, and a four-digit line number of the form XXXX.
|
- NANPA
(North American Numbering Plan Administration)
|
With
divestiture, key responsibilities for coordination and
administration of the North American Numbering/Dialing Plans
were assigned to NANPA. These central administration functions
are exercised in an impartial manner toward all industry
segments while balancing the utilization of a limited resource.
|
- North
American Numbering Plan, Numbering Resource
Utilization/Forecasting Report (NRUF Report)
|
The
NANPA gathers forecast and utilization information to monitor
and project exhaust in individual NPAs/area codes as well as in
the NANP overall. This semi-annual report includes number
utilization information as well as a five year forecast of
demand by year. Pooling carriers report at the thousands-block
level per rate center. Non-pooling carriers report at the
Central Office Code level per rate center. For more detailed
information, see the NRUF Report Guidelines.
|
- NPA
|
Numbering Plan Area (NPA), also called area code. An NPA is the 3-digit code that occupies the A, B, and C positions in the 10-digit North American Numbering Plan (NANP) format that
applies throughout the NANP Area. NPAs are of the form NXX, where N represents the digits 2-9 and X represents any digit 0-9. In the NANP, NPAs are classified as either geographic or
non-geographic.
a) Geographic NPAs are NPAs which correspond to discrete geographic areas within the NANP Area.
b) Non-geographic NPAs are NPAs that do not correspond to discrete geographic areas, but which are instead assigned for services with
attributes, functionalities, or requirements that transcend specific geographic boundaries. The common examples are NPAs in the N00 format, e.g., 800.
|
- NPAC SMS
|
The NPAC
Service Management System is a database which contains all
necessary routing information on ported TNs and facilitates the
updating of the routing
databases of all subtending SPs in the portability area.
|
- OCN
(Operating Company Number)
-
-
-
-
|
An Operating Company Number (OCN) is a four place alphanumeric code that uniquely identifies providers of local telecommunications service. OCN
assignments are required of all SPs in their submission of utilization and forecast data (FCC 00-104, ¶ 41 and Public Notice DA 00-1549). Relative to CO Code assignments, NECA assigned Company
Codes may be used as OCNs. Companies with no prior CO Code or Company Code assignments contact NECA (www.neca.org; 800-228-8597) to be assigned a Company Code(s). Since multiple OCNs and/or
Company Codes may be associated with a given company, companies with prior assignments should direct questions regarding appropriate OCN usage to the Telcordia™ Routing Administration (TRA)
(www.trainfo.com; 866-672-6997).
|
- Point of
Interconnection (POI)
|
The
physical location where an SP's connecting circuits interconnect
for the purpose of interchanging traffic on the PSTN.
|
- Pooling
Administrator
- (PA)
|
The term
Pooling Administrator refers to the entity or entities
responsible for administering a thousands-block number pool (FCC
00-104, §52.7 (g)).
|
- Pooling
Administration System (PAS)
|
The
Pooling Administration System (PAS) refers to the web-based
application that is used to automate the national pooling
administration functions. |
- Pool
Start/Allocation Date
|
The date
the PA may start allocating thousands-blocks from the industry
inventory pool to SPs. This is also the start date for SPs to
send requests for thousands-blocks to the PA.
|
- Public
Switched Telephone Network (PSTN)
|
Public
Switched Telephone Network. The PSTN is composed of all
transmission and switching facilities and signal processors
supplied and operated by all telecommunications common carriers
for use by the public. Every station on the PSTN is capable of
being accessed from every other station on the PSTN via the use
of NANP E.164 numbers.
|
- Rate
Area
|
Rate Center is used for numbering resource applications and reports to associate telephone numbers with a geographic area, as defined by the relevant regulatory agency. A Rate Center
is also a uniquely defined point (Vertical & Horizontal Coordinates) located within an exchange area from which mileage measurements are determined. These measurements can be used with the
tariffs in the message rating processes.
|
- Reassignment
|
The
process of reestablishing the assignment of a thousands-block,
which was previously assigned to another SP or to a new SP.
|
- Reporting Carrier
|
Refers to a
telecommunications carrier that receives numbering resources
from the NANPA, a Pooling Administrator or another
telecommunications carrier.
|
- Reserved
Numbers
-
|
Reserved
numbers are numbers that are held by service providers at the
request of specific end users or customers for their future
use. Numbers held for specific end users or customers for more
than 180 calendar days shall not be classified as reserved
numbers (FCC 00-104, §52.15 (f) (1) (vi).
|
- Service
Provider (SP)
-
-
-
|
The term
“service provider” refers to a telecommunications carrier or
other entity that receives numbering resources from the NANPA, a
Pooling Administrator or a telecommunications carrier for the
purpose of providing or establishing telecommunications service
(FCC 00-104, §52.5 (i)).
|
- Service
Provider Inventory
|
The
inventory of all geographic NANP TNs allocated by the CO Code
Administrator/PA to a Code/Block Holder.
|
- Switching Entity
|
An electromechanical, electronic, or digital system for connecting lines to lines, lines to trunks, or trunks to trunks for the purpose of originating/terminating PSTN calls.
A single switching system may handle several Central Office (CO) codes.
|
- Technical Requirement, Reason, Limitation or
- Constraint
|
A
limitation of the Point of Interconnection or Switching Entity
where an existing thousands-block and/or TNs cannot be used for
designated network routing and/or rating of PSTN calls.
Examples that constitute “technical constraint” include
limitations on a switch, network element or planning constraint,
CPE limitations or unique AIN Triggers.
|
- Thousands-Block
|
A range
of one thousand TNs within an NPA-NXX beginning with X000 and
ending with X999, where X is a value from 0 to 9.
|
- Thousands-Block Number Pooling
-
|
Thousands-block number pooling is a process by which the 10,000
numbers in a central office code (NXX) are separated into ten
sequential blocks of 1,000 numbers each (thousands-blocks), and
allocated separately within a rate center (FCC 00-104, §52.20
(a)).
|
-
Type 1 Interconnection Service
Provider
|
A
wireless SP that utilizes Type 1 (trunk side with line
treatment) interconnection with another SP’s end office switch.
|
- Utilization Threshold
|
The
Service Provider’s current numbering resource (Indigenous
Telephone Numbers) utilization level for the rate center in
which it is seeking growth numbering resources.
The
numbering resource utilization level shall be calculated by
dividing all assigned numbers by the total numbering resources
in the applicant’s inventory and multiplying the result by 100.
Numbering resources activated in the LERG Routing Guide (within
the preceding 90 days of reporting utilization levels may be
excluded from the utilization threshold calculation.
All
applicants for growth numbering resources shall achieve a 60%
utilization threshold, calculated in accordance with FCC 00 429
§ 52.15 (g)(3)(ii), for the rate center in which they are
requesting growth numbering resources.
The
initial utilization threshold of 60% shall be effective May
2001. The utilization threshold shall be increased by 5% on
June 30, 2002, and annually thereafter until the utilization
threshold reaches 75%. (FCC 00 429 § 52.15 (h)) |
- Wireless
E911 ESRD/ESRK Number
-
|
A
10-digit number used for the purpose of routing an E911 call to
the appropriate Public Service Answering Point (PSAP) when that
call is originating from wireless equipment. The Emergency
Services Routing Digit (ESRD) identifies the cell site and
sector of the call origination in a wireless call scenario. The
Emergency Services Routing Key (ESRK) uniquely identifies the
call in a given cell site/sector and correlates data that is
provided to a PSAP by different paths, such as the voice path
and the Automatic Location Identification (ALI) data path. Both
the ESRD and ESRK define a route to the proper PSAP. The ESRK
alone, or the ESRD and/or Mobile Identification Number (MIN), is
signaled to the PSAP where it can be used to retrieve from the
ALI database, the mobile caller’s call-back number, position and
the emergency service agencies (e.g., police, fire, medical,
etc.) associated with the caller’s location. If a NANP TN is
used as an ESRD or ESRK, this number cannot be assigned to a
customer. See “Administrative Numbers” definition.
|
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