| 24-hour time | A time format from 0000 through 2359. Always include the applicable time zone when the work could involve people or systems in more than one region. |
|---|
| Back-Out Plan | The step-by-step procedure used to stop the work and return the network, cable, equipment, configuration, and service to the pre-work condition. |
|---|
| Back-Out Time | The latest clock time at which the back-out plan must begin so restoration and verification can be completed before the maintenance window ends. |
|---|
| Critical Work | Any step that could interrupt service, affect traffic, alter a live network or cable, or make restoration more difficult once started. |
|---|
| Customer Downtime | The estimated period during which a customer service will be unavailable or materially degraded because of the planned work. |
|---|
| Detailed Steps | The numbered, chronological instructions used to perform the work. Each step must state the action, exact asset, expected result, and any required verification. |
|---|
| Full Cable Name | The official cable identifier exactly as shown in the approved cable records. It must include the segment identifier when the cable is divided into named sections. |
|---|
| GPS Coordinates | The latitude and longitude of the work location. Decimal-degree format is preferred because it can be entered directly into most mapping systems. |
|---|
| ISO | An organization-specific internal service/order identifier used to link this MOP to the related work record. Enter the exact value assigned by the responsible team. |
|---|
| Maintenance Window | The approved start and end times during which the work may be performed. Work, verification, cleanup, and any back-out must remain within this window unless a formal extension is approved. |
|---|
| Method of Procedure (MOP) | A controlled document that explains why planned work is needed, who is responsible, how the work will be performed, how it will be verified, and how service will be restored if the work does not proceed as planned. |
|---|
| Maintenance Request (MR) | The ticket or work record used to request, authorize, schedule, communicate, and track a planned maintenance activity. |
|---|
| MR Team | The group responsible for coordinating the maintenance request, confirming approvals and customer notifications, and supporting the activity during the maintenance window. |
|---|
| Network Control Center (NCC) | The operations group that monitors the network and coordinates response, escalation, and service restoration during maintenance or incidents. |
|---|
| Overview | A plain-language summary of the work, affected location and assets, major phases, and anticipated impact. |
|---|
| Project Manager (PM) | The person responsible for coordinating scope, schedule, contacts, approvals, and communications for the work. |
|---|
| Pre-Implementation Plan | All preparation that must be completed before the maintenance window begins, such as staging materials, confirming records, obtaining access, checking tools, taking baseline readings, and reviewing the procedure. |
|---|
| Prep Time | Time needed for setup activities before the critical work begins. Prep time may occur before or within the maintenance window depending on the approved plan. |
|---|
| Segment ID | The identifier for the specific portion of a longer cable route that will be worked on or could be affected. |
|---|
| SEP Number | An organization-specific engineering or project-package reference used to connect the MOP to approved location, route, design, or construction documentation. |
|---|
| Service Interruption | Any unplanned loss, degradation, instability, or impairment of a customer circuit or network service during the work. |
|---|
| Site Access | The authorization and practical arrangements required to enter the work location, including escorts, badges, keys, security check-in, and after-hours access. |
|---|
| SPO/SPA | An organization-specific project or service authorization reference associated with the approved work. Enter the exact assigned identifier and do not substitute an unrelated reference. |
|---|
| Statement of Work (SOW) | A concise description of the reason for the work, the condition or requirement being addressed, the work boundaries, and the intended result. |
|---|
| Vendor | The contractor or third-party organization performing or supporting the work on behalf of Zayo. |
|---|
| Verification Plan | The tests, observations, monitoring, acceptance criteria, and confirmations used to prove that the work succeeded and affected services are operating correctly. |
|---|
| Zayo Project Manager | The Zayo representative accountable for project coordination, MOP completeness, contacts, approvals, and final certification. |
|---|