Overview 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
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 & Turn Up Per Day Per CLEC .................18 Central Office Capacity Management (Tandem Only) ..........................................19
Prioritization of Forecasted Demand (Metering)...............................................19 Capacity Shortages (Held/Denied) ...................................................................19 Maintenance of LISA Trunks ...........................................................................20
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 West's 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:
• End Office IntraLATA • Access Tandem IntraLATA • Meet Point Serving Arrangements
Office IntraLATA and Tandem IntraLATA configurations use one of the following:
• One-way trunks (built and used as one-way) • Two-way trunks (built and used as two-way).
These trunks are used for local and intraLATA toll traffic either between:
• CLECs and SBC West • CLECs, to other exchange carriers via SBC West's Access Tandem
switches
If a CLEC elects to use one-way trunking for the delivery of intraLATA traffic to/through 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 West's 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 (e.g., 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:
• Providing trained personnel with adequate and compatible test equipment to work with SBC West technicians.
• Coordinating with SBC West to ensure the LISA trunk(s) are installed and maintained in accordance with the CLEC's service request.
• Notifying the appropriate SBC West Local Service Center (LSC) when there is any change affecting the service requested, including the Due Date.
• 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.
• Participating cooperatively with SBC West to further isolate and clear trouble when trouble cannot be sectionalized to either SBC West or the CLEC.
• Referring circuit specific and non-circuit specific troubles to SBC West using the trouble reporting procedures provided in the ' Maintenance of LISA Trunks.'
• 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 West's Control Office to determine if there is concurrence on the formation of that particular pattern.
• Advising SBC West's Control Office if there is a CLEC equipment failure, which may affect LISA trunk(s).
• Keeping its patron advised of the status of trouble clearance. • Providing SBC West with a trouble reporting number that is readily
accessible and ensures answering delays are not encountered. • Keeping complete and accurate installation and repair records of
activities pertaining to the LISA trunk(s). • Providing SBC West personnel entry to the LISA trunk(s) termination
location, when required, for installation or maintenance. • 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:
• The lowest alphanumeric switch trunk CLLI (e.g., closest to A-0) will assume overall Control Office responsibility for the trunk group.
• 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).
• SBC West is responsible for designating a Control Office for each LISA trunk(s) furnished to the CLEC. The Control Office performs SBC West's internal control functions associated with the installation and maintenance of the LISA trunk(s).
• SBC California – 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.
SBC West Control Office
• Providing trained personnel to work with the CLEC. • Sectionalizing troubles detected by SBC West, except on trunks
used for one-way incoming traffic toward SBC West. • Isolating trouble that has been sectionalized to the SBC West
portion of LISA trunk(s). • Dispatching SBC West maintenance forces. • Clearing troubles in the SBC West provided facility and/or
equipment. • Performing verification tests, as appropriate, with the CLEC to
ensure the trouble has been cleared. • Arranging for temporary patches to be placed in the event of a
SBC West carrier system failure. • Maintaining adequate and current records of LISA trunk(s)
assignments, including records of temporary changes. • Cooperating with the CLEC, and coordinating SBC West
activities to sectionalize, isolate and clear trouble. • Advising the CLEC of failures that may affect LISA trunk(s). • Initiating corrective action on inoperative or impaired circuits,
and reporting to the CLEC the trouble noted and action taken. • Advising the CLEC before making any changes, which would
affect service, except under emergency conditions. • 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.
• Providing status reports regarding installation and repair activity.
• Performing scheduled testing and other maintenance services.
SBC California Network Management Center (NMC) This section describes SBC California's 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 California's NMCs will use protective controls, such as 7-and 10-digit code gaps, on traffic to and from the CLEC's 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 CLEC's traffic as possible. Expansive controls will only be used when mutually agreed by the CLEC and SBC California NMCs.
The CLEC's NMC (or its equivalent function) may contact the SBC California NMCs on the following telephone numbers:
• Northern California - 916-977-7600 • 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 CLEC's NCC (or its equivalent) may contact the SBC Nevada NCC on the following telephone number:
• SBC Nevada - (775) 333-4400.
Network Management Guidelines The Network Operations Forum's 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 (e.g., Mother's 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 California's 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 – SBC Nevada has no document such as The Network Operations Forum's Management Guidelines and Contact Directory. SBC Nevada does align itself with SBC California's 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.
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 8:00 A.M. - 5:00 P.M. Monday - Friday. It is not open on the following holidays: New Year's Day, President's 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 West's 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 West's portion of the LISA trunk(s) is installed properly, and that the Due Date is met. Should any condition jeopardize a Due Date, SBC West's 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 CLEC's 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 West's 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 CLEC's 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 CLEC's 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 (i.e., 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 West's 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 West's 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 and/or 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 (i.e., 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 West's 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.
(c) One operational test per trunk, performed by the CLEC technician.
Either the CLEC or the SBC West technician may perform additional operational and/or 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 CLEC's 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 West's 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 (i.e., 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 CLEC's 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 and/or 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 West's 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:
• The CLEC may cancel the access order. • The CLEC may reschedule the Due Date with the LSC. This date should
be no more than 30 days after the Due Date. • 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 West's 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 'Odd/Even' 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 (i.e., forward/reverse), opposite directions (i.e., clockwise/counter-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, synchronization/loop-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 – 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.
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:
• 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.
• 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.
• 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 – 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:
• Normalize the way SBC West currently deals with the possibility of tandem capacity limitations.
• Reduce the likelihood of tandem exhaust in the future.
These practices cover:
• Provisioning of trunk expedites • Projects Management • Central Office Capacity Management • Capacity Conservation (implementation applies to Tandem only). • Denial of trunks due to Capacity Shortages (held/denied)
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:
• Existing trunk groups • 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:
• Blocking is occurring during busy hour. • Trunk group utilization is between 85% - 100%.
When a CLEC requests an expedite of an internal trunk order, SBC West's Trunk Planning and Engineering group:
• Validates the occurrence of both of the conditions (listed above).
• Communicates the information to the CLEC within 24 hours of the CLEC's 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:
• Local Interconnection • Switched Access • Wireless
SBC California Best Possible Due Date Intervals
Expedited due dates for LISA trunks are:
• 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
• 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
• 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.
32.30.7.8.2.3 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.
32.30.7.8.3 Project Management Of Trunk Provisioning
Projects are orders:
• Of greater quantity that 12 DS1s (288 trunks). • 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)
• 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:
meetings • Test and turn-up scheduling
The Project Provisioning process may include, as appropriate:
• Joint Planning • Traffic studies, and network design • The setting of a Critical Date, and a negotiated timeline • Conference calls
Limitations on Number of DS1s To Test & 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:
• General Trunk Forecast (GTF) dates: January 1 for April July 1 for October
• 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.
• 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.
• The General Rule is: After handling forecasted demand, Un- forecasted Demand is accommodated.
• 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 (Held/Denied) Capacity Shortages (Held/Denied) are triggered when a valid request for trunks exceeds the remaining capacity at the switch. The possible reasons that an order might be held and/or denied are:
• Facilities problems: Lack of inventory/defective terminal equipment.
• Trunking problems: Lack of equipment at the end offices
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:
• Inoperative circuits are those which do not work in service (i.e., open, shorted).
• 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 trunk/facility failures.
Investigation of chronic trunk/facility 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 (i.e., 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 (e.g., 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 (i.e., 102 milliwatt or 103 synchronous). Compatible test line access must be made available by the CLEC in order to implement/continue 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 investigation/resolution 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 and/or equipment. The type of information which will be exchanged at the time of trouble reporting includes the following:
• CLEC name and location. • SBC West circuit identification number (Two Six Code plus 41
character CLLI of the CLEC's switch). • Date and time of trouble report to SBC West. • Nature of the trouble, test results, and any other information that may
be of assistance to the SBC West Control Office. • The name or initials of the person referring the trouble, and the call-
back telephone number. • The name or initials of the person receiving the trouble report. • Trouble ticket number(s).
SBC West's 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 CLEC's 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.
Overview  
Protective Controls  
Expansive Controls  
Installation of LISA  
32.30.7.8.2.3 Moratorium On Expedites Because Of Resource Co
32.30.7.8.3 Project Management Of Trunk Provisioning  
Projects are orders:  
The Project Provisioning process may include, as appropriate
Limitations on Number of DS1s To Test & Turn Up Per Day Per
Central Office Capacity Management (Tandem Only)  
Prioritization of Forecasted Demand (Metering)  
Capacity Shortages (Held/Denied)