LISA Handbook Local Interconnect Service Arrangement (LISA)

LISA Handbook

Local Interconnect Service Arrangement (LISA)

Overview 2 Configurations of LISA Trunking 2 Responsibilities for LISA 3

The CLEC 3 SBC West 4 SBC West Control Office 5

SBC California Network Management Center (NMC) 5 Protective Controls 6 Expansive Controls 6

Network Management Guidelines 7 Background of Network Management Guidelines 7

Installation of LISA 8 Overview 8 Pre-Service Testing 8

Acceptance Testing 9 LISA Order Completion 12 Circuit Disconnects12 Circuit Rearrangements 13 NXX Code Opening Guidelines14 Carrier Trunk Provisioning Policies 15 Network Reliability Responsibility 15 Provisioning Trunk Expedites 16

Expedites Because Of 85 - 100 Capacity Limit 16 SBC California Best Possible Due Date Intervals17 SBC Nevada Best Possible Due Date Intervals 17 Expedites Associated With Make Busy Trunk Groups 17 32307823 Moratorium On Expedites Because Of Resource Constraints 17 3230783 Project Management Of Trunk Provisioning 18

Projects are orders 18 Project Management may require 18 The Project Provisioning process may include as appropriate 18

Limitations on Number of DS1s To Test amp Turn Up Per Day Per CLEC 18 Central Office Capacity Management (Tandem Only) 19

Prioritization of Forecasted Demand (Metering)19 Capacity Shortages (HeldDenied) 19 Maintenance of LISA Trunks 20

Overview 20 Trouble Detection Responsibilities21

Automatic Trunk Test21 Sectionalization22

LISA Trouble Reporting 22

Overview This document has been developed to provide Competitive Local Carriers (CLECs) and Operations personnel of SBC California and SBC Nevada also known as SBC West 2-STATE with guidelines for the installation and maintenance of SBC Wests Local Interconnection Service Arrangement trunk(s) It is expected that CLECs will provide similar Operations guidelines for the installation and maintenance of their equivalent interconnection product(s)

This document contains procedural guidelines subject to some variation as required by actual circumstances This document does not replace or supersede any tariff contract or other legally binding document In case of conflict between this document and any legally binding document such other document will prevail

SBC California - A CLEC when referred to in this document is any exchange carrier that has been certified by the CPUC to provide local exchange services in California

SBC Nevada - A CLEC when referred to in this document is any exchange carrier that has been certified by the PUCN to provide local exchange services in Nevada

Configurations of LISA Trunking Local Interconnection Service Arrangement trunking is offered in three configurations

bull End Office IntraLATA bull Access Tandem IntraLATA bull Meet Point Serving Arrangements

Office IntraLATA and Tandem IntraLATA configurations use one of the following

bull One-way trunks (built and used as one-way) bull Two-way trunks (built and used as two-way)

These trunks are used for local and intraLATA toll traffic either between

bull CLECs and SBC West bull CLECs to other exchange carriers via SBC Wests Access Tandem

switches

If a CLEC elects to use one-way trunking for the delivery of intraLATA traffic tothrough SBC West the CLEC must necessarily offer a reciprocal trunking product to SBC West for completion of its traffic to CLEC switches

The IEC Transit trunk groups carry originating and terminating switched access traffic between CLECs and IECs via SBC Wests access tandem LISA includes all

wiring cable equipment and facilities up to the Point of Termination (POT) as defined in the chapter Installation of LISA

These guidelines also generally apply to trunks built between the CLEC and SBC West for E9-1-1 and for Operator Assistance

The principle governing the relations between SBC West and the CLECs is that SBC West treats CLECs as network co-carriers and conducts all negotiations and business transactions fairly and equitably

Responsibilities for LISA

The CLEC

The CLEC assumes all Control Office functions for its Local Interconnection Service Arrangement IEC Transit trunks and trunk groups and for all trunk groups used by the CLEC for its one-way outgoing traffic The CLEC has the overall coordination installation and maintenance responsibilities for the above trunk groups and is wholly responsible for its portion of all Local Interconnection Service Arrangement trunks

For all two-way IntraLATA trunk groups overall Control Office responsibilities will be assigned to the SBC West or the CLEC based upon its Common Language Location Identification (CLLI) of the two-way trunk groups as follows

The lowest alphanumeric switch trunk CLLI (eg closest to A-0) will assume overall Control Office responsibility for the trunk group

In all cases the CLEC will work cooperatively with SBC West during acceptance and maintenance of the LISA trunk(s)

The CLEC is responsible for the following

bull Providing trained personnel with adequate and compatible test equipment to work with SBC West technicians

bull Coordinating with SBC West to ensure the LISA trunk(s) are installed and maintained in accordance with the CLECs service request

bull Notifying the appropriate SBC West Local Service Center (LSC) when there is any change affecting the service requested including the Due Date

bull Coordinating and scheduling testing activities of its own personnel SBC West and others (as applicable) to ensure its LISA trunk(s)trunk group(s) are installed per the interconnection order meet Acceptance Test requirements and are turned up by Due Date

bull Performing sectionalization to determine if a trouble is located in its facility or its portion of LISA trunk(s) prior to referring the trouble to SBC West

bull Participating cooperatively with SBC West to further isolate and clear trouble when trouble cannot be sectionalized to either SBC West or the CLEC

bull Referring circuit specific and non-circuit specific troubles to SBC West using the trouble reporting procedures provided in the Maintenance of LISA Trunks

bull Performing analysis of all trouble reports received from its patrons to allow proper referral of the trouble If this analysis reveals a trouble pattern on LISA trunk(s) the CLEC may confer with the SBC Wests Control Office to determine if there is concurrence on the formation of that particular pattern

bull Advising SBC Wests Control Office if there is a CLEC equipment failure which may affect LISA trunk(s)

bull Keeping its patron advised of the status of trouble clearance bull Providing SBC West with a trouble reporting number that is readily

accessible and ensures answering delays are not encountered bull Keeping complete and accurate installation and repair records of

activities pertaining to the LISA trunk(s) bull Providing SBC West personnel entry to the LISA trunk(s) termination

location when required for installation or maintenance bull Providing its test line numbers and test line access to test lines

SBC West

SBC West will assume overall Control Office functions for its one-way trunk groups used for one-way outgoing traffic For all two-way IntraLATA trunk groups overall Control Office responsibilities will be assigned to the SBC West or the CLEC based upon its Common Language Location Identification (CLLI) of the two-way trunk group as follows

bull The lowest alphanumeric switch trunk CLLI (eg closest to A-0) will assume overall Control Office responsibility for the trunk group

bull SBC West is responsible for the installation operation and maintenance of its portion of the LISA trunk(s) within its operating area in accordance with SBC California and SBC Nevada tariffs SBC West will work cooperatively with the CLEC during the acceptance and maintenance of the LISA trunk(s)

bull SBC West is responsible for designating a Control Office for each LISA trunk(s) furnished to the CLEC The Control Office performs SBC Wests internal control functions associated with the installation and maintenance of the LISA trunk(s)

bull SBC California ndash The telephone number for reporting troubles on SBC California LISA trunk(s) is 1-800-662-4664 This number is accessible 24-hours a day seven days a week

bull SBC Nevada - The telephone number for reporting troubles on SBC Nevadas LISA trunk(s) is 1-800-565-5504 This number is accessible 24 hours a day seven days a week

SBC West Control Office

SBC Wests Control Office is responsible for

bull Providing trained personnel to work with the CLEC bull Sectionalizing troubles detected by SBC West except on trunks

used for one-way incoming traffic toward SBC West bull Isolating trouble that has been sectionalized to the SBC West

portion of LISA trunk(s) bull Dispatching SBC West maintenance forces bull Clearing troubles in the SBC West provided facility andor

equipment bull Performing verification tests as appropriate with the CLEC to

ensure the trouble has been cleared bull Arranging for temporary patches to be placed in the event of a

SBC West carrier system failure bull Maintaining adequate and current records of LISA trunk(s)

assignments including records of temporary changes bull Cooperating with the CLEC and coordinating SBC West

activities to sectionalize isolate and clear trouble bull Advising the CLEC of failures that may affect LISA trunk(s) bull Initiating corrective action on inoperative or impaired circuits

and reporting to the CLEC the trouble noted and action taken bull Advising the CLEC before making any changes which would

affect service except under emergency conditions bull Coordinating the various SBC West work groups to ensure that

the LISA trunk(s) are installed per the interconnection order and that it meets Pre-Service and Acceptance Test requirements

bull Providing status reports regarding installation and repair activity

bull Performing scheduled testing and other maintenance services

SBC California Network Management Center (NMC) This section describes SBC Californias position with regard to network management controls to and from CLEC networks It is included to assist maintenance personnel by providing guidelines for SBC California Network Management Centers (NMCs)

Protective Controls

SBC Californias NMCs will use protective controls such as 7-and 10-digit code gaps on traffic to and from the CLECs networks when required to protect the SBC California network from congestion or overloads due to facility failures switching machine congestion or failure or focused overloads The NM will notify the CLEC if possible of the control action taken and provide any pertinent data necessary to assist in evaluating the situation

Expansive Controls

SBC California will use expansive controls such as reroutes to complete as much of a CLECs traffic as possible Expansive controls will only be used when mutually agreed by the CLEC and SBC California NMCs

The CLECs NMC (or its equivalent function) may contact the SBC California NMCs on the following telephone numbers

bull Northern California - 916-977-7600 bull Southern California - 858-886-1620

SBC Nevada

In SBC Nevada the Network Management Center (NMC) is called the Network Control Center (NCC) and performs the same functions as the NMC in SBC California

The CLECs NCC (or its equivalent) may contact the SBC Nevada NCC on the following telephone number

bull SBC Nevada - (775) 333-4400

Network Management Guidelines The Network Operations Forums Network Management Guidelines and Contact Directory was developed to provide the Network Management personnel of the Local and Interexchange Carriers with alternative guidelines for traffic management and may be useful for CLECs as well

Specific procedures cited here and in the Network Operations Forum document will require pre-planning and negotiations between the companies involved

SBC West invites and encourages joint SBC West and CLEC Network Management meetings to discuss and plan traffic management options

If a CLEC wishes to investigate the availability and use of the options described in these guidelines its NMC or equivalent should contact the SBC California Network Management Center or the SBC Nevada Network Control Center as appropriate

Background of Network Management Guidelines

Where the capability exists originating or terminating reroutes may be implemented temporarily to relieve network congestion due to facility failures or recognized abnormal calling periods (eg Mothers Day disasters etc) Under these circumstances reroutes have the potential to improve call completions and service to the customer thus providing increased revenues to the CLECs and Exchange Carriers alike Reroutes will not be used to circumvent normal trunk servicing

In the case where a CLEC suffers an extended network outage there are options that may be available to SBC West and CLEC to reroute end users traffic Exchange Carrier and CLEC pre-planning for this possibility is advised

SBC California policy requires that its subscribers whose service characteristics include high-volume call-in or bursty inbound traffic patterns must provide SBC California with accurate and adequate advance notification of their call-in events This advance notification and planning allows SBC Californias Network Management Center the time needed to design and implement protective controls that can prevent the significant network blockage and overload that are at times associated with media-stimulated calling Exchange Carrier and CLEC cooperation and pre-planning for cross-network call-ins is advised

SBC Nevada ndash SBC Nevada has no document such as The Network Operations Forums Management Guidelines and Contact Directory SBC Nevada does align itself with SBC Californias policy of encouragement of joint meetings between SBC Nevada and the CLECs to discuss and plan traffic management options SBC Nevada also re-routes traffic where capability exists to relieve network congestion due to facility failures or recognized abnormal calling periods

Installation of LISA

Overview

Installation as referred to in this document pertains to that portion of the total provisioning process which starts when the order is received by the Control Office and ends when the CLEC accepts the LISA trunk(s)

Installation includes adds changes rearrangements and disconnects The CLEC will order LISA trunk(s) through the Local Service Center (LSC) The LSC is open 800 AM - 500 PM Monday - Friday It is not open on the following holidays New Years Day Presidents Day Memorial Day Independence Day Labor Day Thanksgiving Day day after Thanksgiving Day and Christmas

The order after processing by the LSC will flow to SBC Wests Control Office During the installation period all CLEC inquiries will be referenced by the SBC West order number and circuit identification (Two Six Code [TSC] plus 41 character CLLI of the CLEC switch)

The Control Office will ensure the SBC Wests portion of the LISA trunk(s) is installed properly and that the Due Date is met Should any condition jeopardize a Due Date SBC Wests Control Office will notify the CLEC and the LSC

The point where the LISA trunk(s) and the CLEC facilities or equipment are connected is referred to as the Point of Termination (POT) It is the CLECs responsibility to arrange for suitable equipment space and electrical power at the POT if required The space shall be in a safe working area and will be accessible during normal working hours to SBC West personnel for installation and maintenance purposes or CLEC personnel will be available to work with SBC West personnel

Pre-Service Testing

Pre-Service Tests are basic tests performed by SBC West to ensure the LISA trunk(s) have been designed installed and aligned properly These tests are performed at the direction of SBC Wests Control Office and usually involve SBC West field technicians and central office personnel

SBC West Pre-Service Testing is to be completed no later than the Plant Test Date (PTD) and must be completed prior to the test appointment with the CLEC

In those cases where automatic testing or access to the CLECs test lines is available these methods will be used in lieu of more labor-intensive methods The SBC West Control Office must verify that the CLEC has made its portion of the circuit available for Pre-Service Testing and that the end-to-end or switch-to-switch transmission parameters are known Since the tests measure the circuit from switch to switch poor test results will not necessarily indicate whether the LISA trunk(s) or the CLECs portions of the trunk(s) are defective

Sectionalization will be necessary to determine whether LISA trunk(s) meet(s) Pre-Service Test requirements

If Pre-Service Testing is not possible (ie the CLEC does not provide automatic testing capabilities and there is no test termination available at the POT) the Bit Error Rate (BER) results obtained from the digital transmission facility testing by SBC Wests Facility Maintenance Administration Center may be used to confirm acceptable Pre-Service Test results

Acceptance Testing Acceptance Tests may involve both SBC West and CLEC personnel and are basic tariffed installation tests performed to verify LISA trunk(s) have been installed properly

The CLEC has the option of LISA trunk(s) prior to the Due Date if installation work is complete To make it possible for the CLEC to turn up LISA trunk(s) as early as possible the Control Office will attempt to meet the CLEC at the earliest possible Acceptance Test appointment requested

Prior to the Due Date the CLEC will contact SBC Wests Control Office to determine when the LISA trunk(s) will be ready for Acceptance Testing The CLEC will schedule a mutually agreeable date and time and coordinate any basic andor Additional Cooperative Acceptance Testing desired by the CLEC SBC West will provide access to its test lines if the CLEC elects to perform its own Acceptance testing (without SBC West participation)

Basic Acceptance Tests are

(a) DC Continuity (b) Operational Signaling (c) 1004 Hz Loss (d) 3-Tone Slope (e) C-Message Noise (f) C-Notched Noise (g) Balance (if there is a 2-wire to 4-wire interface)

On purely digital trunks (ie the SBC West switch the CLEC switch and the inter-connecting transmission facilities are all digital with no analog-to-digital interfaces) the above acceptance tests may be inappropriate and the Acceptance Tests listed below should be used These three tests will be performed on a non-billable basis in lieu of the tests [(a) through (g)] listed above

a) A cooperative test of the digital transmission facilities

The test parameters specified in TA-TSY-000342 apply if the digital transmission facility was ordered by the CLEC as a Special Access High Capacity service If the digital transmission facility is provided at SBC Wests option a cooperative Bit Error Rate (BER) test will be offered to the CLEC BER tests will be performed between the DSX closest to the SBC West switch and the first CLEC DSX

(b) One two-way 1004 Hz loss test per digital system (eg DS-1) or one two-way 1004 Hz loss test per trunk group if multiple trunk groups share the system

(c) One operational test per trunk performed by the CLEC technician

Either the CLEC or the SBC West technician may perform additional operational andor transmission tests by utilizing terminating test lines at the distant end of the circuit Since these tests measure the circuit from switch to switch poor test results will not necessarily indicate whether the LISA trunk(s) or the CLECs portions of the trunk(s) are defective (Refer to the section on sectionalization that follows)

When trunks are being added to a trunk group using an existing digital system only test (b) and (c) will be performed There is no need to test the digital transmission facility since it is already in-service

When the Pre-Service Test results indicate the circuit is within Acceptance Limits SBC Wests Control Office will offer the CLEC a copy of those test results

The results of the basic Acceptance Tests must be within the Acceptance Limits for the service provided Once the circuits are verified to be within the allowable range additional time will not be spent making additional adjustments or retests

For Cooperative Acceptance Testing the SBC West technician(s) will perform cooperative tests under the direction of the SBC West Control Office

Acceptance Testing is done end-to-end or switch-to-switch (ie beyond the POT) and the test results are not within Acceptance Limits sectionalization must be done to determine whether the problem is in LISA trunk(s) or in the CLECs portion of the trunk(s) Sectionalization will be the responsibility of the CLEC and should take place after any remaining Acceptance Tests are completed The CLEC may request the SBC West technician to stand-by while the CLEC moves to the POT to perform the necessary tests to sectionalize the trouble The SBC West technician will participate in the sectionalization as necessary Once the Acceptance Tests have been completed SBC West will make the circuit(s) busy until accepted by the CLEC to prevent selection andor false seizures from affecting the switching machine It will be necessary for the CLEC to coordinate with the Control Office for the removal of the make-busy Both ends of the two-way CLEC trunk must be turned up simultaneously Circuits may not be turned up until the service has been accepted by the CLEC

If the CLEC requests turn-up of a LISA trunk(s) prior to the Due Date SBC Wests Control Office must verify the CLEC accepts any applicable billing coincident with the turn-up

If the CLEC wishes to delay billing until the Due Date the LISA trunk(s) should be disabled to ensure it is not used until billing begins

In the event the CLEC is either not available or not ready to perform Acceptance Tests at the scheduled appointment time SBC West will identify the installation order as Customer Not Ready and the following alternatives exist

bull The CLEC may cancel the access order bull The CLEC may reschedule the Due Date with the LSC This date should

be no more than 30 days after the Due Date bull At the request of the CLEC the SBC West technician will stand-by for

thirty minutes at no charge if it is apparent that the CLEC will be ready within that time

Note SBC West will identify the installation order as Customer Not Ready in all cases where the LISA trunk(s) have passed SBC Wests Pre-Service Testing and the CLEC is either unavailable or not ready to perform Acceptance Tests or unable to accept the LISA trunk(s) by the Due Date

If the CLEC is unable to accept LISA trunk(s) within 30 calendar days of the original Due Date the CLEC must cancel the order If the CLEC does not cancel the order than SBC West will cancel the order A new order for LISA trunks must be submitted by the CLEC and standard due dates will be applied

On all SS7-equipped LISA trunk groups used as two-way the following protocol-driven OddEven strategy for glare control must be used The switch with the lowest (closest to zero) SS7 Point Code controls the odd numbered Trunk Circuit Identification Codes (TCICs or trunks) the switch with the highest Point Code controls the even numbered trunks Trunk hunt or trunk selection strategies used to minimize the likelihood of glare require that trunk hunt or trunk selection should be from opposite ends (ie forwardreverse) opposite directions (ie clockwisecounter-clockwise) or otherwise different hunt patterns of the two-way trunk groups Trunk hunt or selection strategies must be mutually agreed to prior to trunk group turn-up

Where digital equipment is used synchronizationloop-timing options should be verified Improper synchronization can cause slips which results in circuit impairments Slips should be investigated and synchronization problems corrected

If slips are referred both the CLEC and SBC West should work cooperatively to resolve the trouble

LISA Order Completion Service order completion is contingent on meeting the Acceptance Limits specified in the Technical Reference publication or Bell System Practice for the particular type of LISA trunk(s) being installed The actual tests are performed as outlined in previous sections of this document

Upon acceptance of the LISA trunk(s) by the CLEC the SBC West Control Office will record the full name of the CLEC representative accepting the service and the basis of the acceptance

a Cooperative Acceptance Testing b Pre-Service Test results c Automatic test results

The Control Office will provide the test results to the CLEC representative as requested

The Control Office will report the order as completed and furnish all required information to the LSC including any Additional Labor charges If the CLEC cannot accept all trunks the CLEC will need to supplement the order for a change of Due Date or number of trunks

SBC Nevada ndash SBC Nevada does not provision partial completions In the event that the CLEC is not ready to accept all the trunks on the due date the order will be considered customer not ready and held for a new due date or cancellation and re-issuance

Circuit Disconnects Before either the CLEC or SBC West technicians begin disconnect activity they will contact the other for order coordination When the circuits are removed from service disconnect procedures may commence

If the disconnect order is canceled or changed by the CLEC the CLEC must contact the SBC West Control Office who will in turn notify the appropriate SBC West work groups to avoid disruption of the service When the CLEC changes or cancels a disconnect order the LSC must be notified or the order will be worked on the due date

Circuit Rearrangements Rearrangements of a LISA trunk(s) include CLEC- and SBC West-initiated changes in equipment software assignments or facilities

When a CLEC-initiated rearrangement can be accomplished solely by the CLEC (and no service order is issued) requests for circuit make-busy are handled through the Local Operations Center (LOC)

If the CLEC-initiated rearrangement requires a change to the LISA the CLEC must contact the LSC who will issue a service order

When a SBC West-initiated rearrangement requires a change to the LISA trunk(s) or circuit make-busy the SBC West Control Office will contact the CLEC and determine the extent of coordination required This contact will normally include negotiating a period of time during which the SBC West rearrangement testing and restoral will take place

A sufficient period of time will be negotiated and agreed upon for SBC West to complete the rearrangement and any appropriate testing

Upon completion of a SBC West-initiated rearrangement the Control Office will coordinate any tests necessary to ensure the rearrangement was performed satisfactorily

When a rearrangement affects a transmission parameter the CLEC and SBC West may cooperatively test and verify that the LISA trunk(s) are within Acceptance Limits after the rearrangement is complete

If during a CLEC-initiated rearrangement the CLEC requests SBC West to work outside of the Normal Business Day (NBD) SBC West may schedule the activity based on availability of scheduled personnel

NXX Code Opening Guidelines The following process is outlined for the activation of new codes to provide assurance that routing and billing translations are testedvalidated appropriately by SBC West and CLECs

Note See Central Office Code (NXX) Assignment Guidelines INC 95-0407-008 April 4 1995 for information regarding NPA-NXX administration and assignment

Upon receipt of notification (via the Local Exchange Routing Guide - LERG or elsewhere) that a new NXX is to be activated SBC West and the CLEC shall provide assurance for the integrity of routing and billing by the Due Date

The terminating office will activate test number (milliwatt) or recorded announcement to provide assurance to personnel performing call-through tests that they have indeed reached the terminating (serving) office

Where billing is required AMA validation shall take place

The activation and call-through testing guidelines are as follows

bull The serving end office will activate the new NXX code within the serving office and perform

A test call from a pre-assigned number to ensure that calls can be initiated from the newly opened NXX

An intra-office call from the new NXX to an existing NXX and from an existing NXX to the newly opened NXX

bull The non-serving switches and tandems will open the new NXX in their routing translations and perform a call-through test to the appropriate route

bull The terminating office will open the new NXX in their routing translations (as appropriate) and perform a call-through test to the end office

Where mechanized translation input and validation is available such mechanized capabilities should be used to validate the routing and AMA capability This function should be performed on or before the actual Due Date listed in the LERG

SBC Nevada ndash SBC Nevada follows the same industry standard testing parameters as described for SBC California However SBC Nevada does not offer the CLECs a copy of Pre-Service Test results in lieu of performing cooperative Acceptance Testing

Carrier Trunk Provisioning Policies In order to better manage the complex and critical processes associated with the engineering and provisioning of all network interconnection the following practices have been put in place for CLECs to both

bull Normalize the way SBC West currently deals with the possibility of tandem capacity limitations

bull Reduce the likelihood of tandem exhaust in the future

These practices cover

bull Provisioning of trunk expedites bull Projects Management bull Central Office Capacity Management bull Capacity Conservation (implementation applies to Tandem only) bull Denial of trunks due to Capacity Shortages (helddenied)

Network Reliability Responsibility Each CLEC must be able to retain responsibility for the management control and performance of its own network Internal trunk orders such as for common transport groups may be expedited or take priority assignment when required to insure network performance

Important Direct Trunking to End Offices is preferred

Provisioning Trunk Expedites The expedite policy covers both

bull Existing trunk groups bull New trunk groups which have been established to alleviate

service conditions on an existing trunk group that meets the expedite criteria

Expedites may take place when both of the following conditions occur

bull Blocking is occurring during busy hour bull Trunk group utilization is between 85 - 100

When a CLEC requests an expedite of an internal trunk order SBC Wests Trunk Planning and Engineering group

bull Validates the occurrence of both of the conditions (listed above)

bull Communicates the information to the CLEC within 24 hours of the CLECs expedite request

Expedites Because Of 85 - 100 Capacity Limit

When the capacity limit is exceeded using the 85 to 100 utilization criteria the trunk service order may be expedited using a new standard interval This interval has been developed from and replaces the Best Possible Due Date standard interval in use for the following types of services

bull Local Interconnection bull Switched Access bull Wireless

SBC California Best Possible Due Date Intervals

Expedited due dates for LISA trunks are

bull Establishes Digital Interface 1 - 48 trunks 20 days 49 - 96 trunks 22 days 97 - 144 trunks 24 days 145 - 192 trunks 26 days 193 - 288 trunks 28 days

bull Augment Without Translations - Digital Interface 1 - 48 trunks 11 days 49 - 96 trunks 13 days 97 - 144 trunks 16 days 145 - 192 trunks 18 days 193 - 288 trunks 20 days

bull Augment With Translations - Digital Interface 1 - 48 trunks 16 days 49 - 96 trunks 18 days 97 - 144 trunks 20 days 145 - 192 trunks 22 days 193 - 288 trunks 24 days

SBC Nevada Best Possible Due Date Intervals

When the capacity limit is exceeded using the 85 to 100 utilization criteria the trunk service order may be expedited SBC Nevada will negotiate the best possible expedite date

Refer to Due Dates For Local Interconnection Service Arrangement (LISA) in the CLEC Handbook for the standard intervals

Expedites Associated With Make Busy Trunk Groups

When the blocking on the trunk group can be directly attributed to a make busy condition of trunks in the group no expedite can be approved until the make busy trunks are put into service and then only if a service condition still exists

32307823 Moratorium On Expedites Because Of Resource Constraints

Resource constraints with SBC California SBC Nevada or SBC Southwest may require that a moratorium on expedites be imposed for a specified period of time in a specific geographic area

3230783 Project Management Of Trunk Provisioning

Projects are orders

bull Of greater quantity that 12 DS1s (288 trunks) bull Requiring the coordination and execution of multiple orders or

related activities between and among SBC West and the CLEC work group including but not limited to the initial establishment of

Local Interconnections or Meet Point trunks groups and service in an area

NXX code moves Re-Homes (the movement of prefixes after the upgrade

of a switch and the upgrading of the features offered because the switch has been upgraded)

Facility grooming or network grooming (upgrading of facilities)

bull That may require several ASRs to comprise the total project must be submitted at the same time Implementation of all orders comprising a project are jointly planned and coordinated

Project Management may require

bull Project coordination and leadership bull Joint EUCLEC planning bull Negotiated timelines and provisioning intervals bull Network design requirements bull Traffic studies bull Special communications such as EUengineeringoperations

meetings bull Test and turn-up scheduling

The Project Provisioning process may include as appropriate

bull Joint Planning bull Traffic studies and network design bull The setting of a Critical Date and a negotiated timeline bull Conference calls

Limitations on Number of DS1s To Test amp Turn Up Per Day Per CLEC

SBC West may place limitations on the number of DS1s per day per CLEC which can be tested and turned up These limitations are made by Market Area

Central Office Capacity Management (Tandem Only) The CLEC trunk forecast requirements are

bull General Trunk Forecast (GTF) dates January 1 for April July 1 for October

bull Forecasts included in the GTF are considered in network planning and engineering There is an additional engineering interval of 6 months or more following the GTF publication for vendor-provided equipment

bull CLEC vs SBC West (internal) forecasts which vary by more than 48 additional trunks must be reconciled in joint planning meetings

Prioritization of Forecasted Demand (Metering)

The prioritization of forecasted demand or metering is triggered when the available number of spare trunks in a switch falls below a pre-defined level Orders for Forecasted Demand are accommodated on a first come first served basis Metering is limited by equipment availability

bull The General Rule is After handling forecasted demand Un-forecasted Demand is accommodated

bull The Exception to the General Rule is Internal trunk orders such as for common transport groups may take priority assignment when required to insure network performance

Capacity Shortages (HeldDenied) Capacity Shortages (HeldDenied) are triggered when a valid request for trunks exceeds the remaining capacity at the switch The possible reasons that an order might be held andor denied are

bull Facilities problems Lack of inventorydefective terminal equipment

bull Trunking problems Lack of equipment at the end offices

Maintenance of LISA Trunks

Overview

Maintenance of LISA trunk(s) is based on the premise that the CLEC and SBC West both have responsibility for monitoring the performance of their trunks used as one-way (outgoing) and that the responsibility for monitoring all trunks used as two-way is shared by SBC West and the CLEC

The company (SBC West or the CLEC) detecting a circuit trouble or service impairment will take corrective action as outlined below This does not include any responsibility for sectionalization beyond the POT or the repair of equipment or facilities owned by the other company Each company is responsible for the portion of the overall circuit it provides

It is advantageous to both companies to maintain high quality LISA trunk(s) To this end each company will be prepared to work cooperatively when required during LISA trunk(s) maintenance These procedures are written with this objective in mind

There are two general categories of circuit trouble

bull Inoperative circuits are those which do not work in service (ie open shorted)

bull Impaired circuits are those that exhibit intermittent failures or degraded transmission performance This includes failures of both Maintenance Limits and Immediate Action Limits Impairment also includes improper synchronization which can cause slips to be incurred and chronic trunkfacility failures

Investigation of chronic trunkfacility failures will involve the exchange of information relative to the chronic failure A detailed investigation should be made to determine the cause of the trouble condition This activity may involve cooperative testing and should be handled as an impaired circuit trouble report

All LISA trunk(s) failing Maintenance Limits or Immediate Action Limits will be restored to within Acceptance Limits SBC West will repair LISA trunk(s) failing Maintenance Limits within one business day of when it becomes aware of the trouble All other circuit specific trouble reports from the CLEC will be handled as an out-of-service condition and given prompt attention

Communications may be necessary on services that involve a CLEC or end user its intermediate agent (ie third party transport provider) and SBC West In these situations the cooperation of all three organizations may be necessary to expedite trouble clearance

Trouble Detection Responsibilities When SBC West or CLEC personnel become aware of an inoperative interconnection trunk they will ensure the circuit is promptly removed from service (at both ends of a trunk used as two-way) The identifying company is responsible for making its end of the circuit busy and for contacting personnel to make the other end busy This should be done immediately after identification of the inoperative condition to prevent service failures on the circuit The company detecting the inoperative condition on a trunk used for two-way trunk service will then sectionalize and either repair or refer the trouble On one-way trunks (or two-way trunks used only for one-way service) the company on the originating end will be responsible for sectionalization

When SBC West or CLEC personnel become aware of an impaired LISA trunk(s) removal from service is to be a CLEC determination When detected by SBC West the Control Office will prompted notify the CLEC of the condition With the exception of Maintenance Limit failures described earlier the CLEC will decide the action to be taken and the timing If maintenance is to be delayed a mutually agreed upon time will be negotiated for removal from service and trouble sectionalization

It has been recommended by the Network Operations Forum and other industry bodies that all routine and scheduled maintenance activities be performed during hours of low traffic volumes so that any inadvertent failures impact the least number of customers If customer service is affected by a trouble condition during periods of heavy calling the minimum work activity to restore the service to a stable performance state should be undertaken and complete service recovery activities scheduled for a period of lighter traffic

Automatic Trunk Test (eg Automatic Progression Trunk Testing) may be performed on interconnection trunk groups This testing is available in switches that have the test ability and that can be arranged to access test lines on a recurring basis to perform operational tests (ie 102 milliwatt or 103 synchronous) Compatible test line access must be made available by the CLEC in order to implementcontinue such testing The trunks that fail such testing should be removed from service and repaired per local procedures

Some CLECs may have the ability to monitor short holding times on a per trunk real-time basis A trunk experiencing consistent short holding times associated with a high attempt rate may indicate a killer trunk condition Killer trunks may be caused by a number of operational transmission impairments (such as low levels one way transmission noise echo no answer supervision etc) Killer trunks should be investigated to determine the reason for the short holding times A talk-listen test should be performed in the investigationresolution of killer trunks

Sectionalization

Sectionalization is the joint responsibility of SBC West and the CLEC Since the office on the originating end of LISA trunk(s) is best equipped to sectionalize failures both SBC West and the CLEC will be responsible for sectionalization on its respective outgoing trunks and on two-way trunks

It is anticipated that the sectionalization may involve cooperative testing and in the interest of maintaining continuity of service both entities are expected to participate in this activity when requested SBC West will test cooperatively or independently to assist in trouble sectionalization

In cases where the POT location is not normally staffed the CLEC is responsible for sectionalizing the trouble and should arrange for cooperative testing or dispatch as required

LISA Trouble Reporting SBC West has designated the Local Operations Center (LOC) to provide CLECs with a single point of contact for trouble reporting The LOC can be reached on 1-800-662-4664 After reporting trouble subsequent requests for repair status will be directed to the SBC West Control Office

SBC West is responsible for receiving reports from the CLEC for troubles sectionalized by the CLEC to SBC West facilities andor equipment The type of information which will be exchanged at the time of trouble reporting includes the following

bull CLEC name and location bull SBC West circuit identification number (Two Six Code plus 41

character CLLI of the CLECs switch) bull Date and time of trouble report to SBC West bull Nature of the trouble test results and any other information that may

be of assistance to the SBC West Control Office bull The name or initials of the person referring the trouble and the call-

back telephone number bull The name or initials of the person receiving the trouble report bull Trouble ticket number(s)

SBC Wests Control Office upon receipt of a trouble report from the LOC will conduct independently or cooperatively with the CLEC any normal tests required to identify and clear the trouble If it is determined that central office switch testing is required all such activity will be directed by the Control Office

When SBC West sectionalizes a trouble to the CLECs side of the POT the Control Office will refer the trouble to the CLEC exchanging information similar to that listed above

Any trouble reports regarding killer trunks referred by the CLEC will be accepted by SBC West via the LOC SBC West will attempt to perform cooperative tests to verify trouble and repair as appropriate