Procedure 12-22.3: Upgrade OC-12 1+1 network (function/growth-to-function/growth)
Important!
This is not a stand-alone procedure. Perform this procedure only as directed by another procedure.
Steps
Important!
When optical fibers are disconnected during this procedure, inc. LOS alarms are reported. The holdover mode active condition may also be reported depending on the provisioned system timing mode.
Complete the following steps to upgrade an in-service OC-12 1+1 network to an OC-48 1+1 network where the nodes are connected using the Function/Growth slots at both nodes.
1 |
Identify and log in to the far-end node connected to the 1+1 network using a port pair in the Function/Growth slots. Reference: Procedure 14-2: Connect Personal Computer (PC) and establish WaveStar® CIT session | ||
2 |
Important! An OC-48 port pair must be available in a different Function/Growth group. To verify that the upgrade OC-48 port parameters are provisioned correctly, select View → Equipment and expand the required circuit pack. Click on the OC-48 port and Select to obtain the port parameters. Click Close. If required, provision the upgrade OC-48 port pair according to the work instructions using the Configuration → Equipment command. Reference: Procedure 4-4: Provision OLIU circuit packs/ports for service | ||
3 |
To verify that the upgrade OC-48 port DCC parameters are provisioned correctly, select View → DCC Terminations to obtain the DCC channel status. Click Close. If required, provision the upgrade OC-48 port DCC parameters according to the office records using the Configuration → DCC Terminations command. Reference: Procedure 6-4: Provision DCC terminations | ||
4 |
Important! If the provisioned Timing Mode is Line and the Optical Synchronization Source is either of the OC-12 ports that are to be upgraded, the Optical Synchronization Source must be reprovisioned to an upgrade OC-48 port or to a different OC-n port not involved in the upgrade. Select View → Timing/Sync to access the System Timing parameters and observe the provisioned Timing Mode and Optical Synchronization Source. Click Close. If required, use local operating procedures to determine which OC-n line to provision as the new Optical Synchronization Source. | ||
5 |
Important! Perform this step only if the Optical Synchronization Source is to be reprovisioned to a different OC-n port not involved in the upgrade. If the Optical Synchronization Source is to be reprovisioned to an upgrade OC-48 port, the Optical Synchronization Source is reprovisioned later in this procedure only after transmission is supported on the upgrade OC-48 span. If required, select Configuration → Timing/Sync to reprovision the Optical Synchronization Source to a different OC-n port not involved in the upgrade. Reference: Procedure 6-5: Network Element synchronization provisioning | ||
6 |
Identify and log in to the near-end node connected to the 1+1 network using a port pair in the Function/Growth slots and repeat Step 2 through Step 5. Reference: Procedure 14-2: Connect Personal Computer (PC) and establish WaveStar® CIT session | ||
7 |
Important! All cross-connections at the far-end node that are associated with the existing OC-12 1+1 network must be identified so that traffic can be moved to the OC-48 1+1 network. At the far-end node, select View → Cross-Connections. Expand the required OC-12 OLIU circuit pack in slot 1 of the Function/Growth group that is currently connected to the OC-12 1+1 network. Click on the required OC-12 port and Select to obtain the current list of cross-connections. Identify and record all add and drop cross-connections. Click Close to exit. | ||
8 |
For each add (Main to Function/Growth) cross-connection identified at the far-end node, select Configuration → Cross-Connections and use the Cross-Connection Wizard to bridge the add cross-connections to the required OC-48 port on the OC-48 OLIU circuit pack in slot 1 of the other Function/Growth group. Reference: Procedure 10-10: Bridge and roll cross-connections | ||
9 |
At the near-end node, repeat Step 7 and Step 8. | ||
10 |
Removal of wrong fiber connections will result in a service interruption. Ensure that you remove only the fiber connections for the optical span being upgraded. Important! Do not reconnect the optical fibers until instructed to do so. The optical fibers are reconnected after the OC-12 circuit pack is upgraded at each end of the optical span. At the far-end node, disconnect the transmit and receive optical fibers from the required OC-12 port on the OC-12 OLIU circuit pack in slot 1 of the Function/Growth group. Result: The system reports inc. OC12 LOS alarms for the original OC-12 ports. Alarms may also be reported at other nodes. | ||
11 |
At the near-end node, repeat Step 10. | ||
12 |
At both ends of the optical span to be upgraded, perform the following to connect the OC-48 port on the OC-48 OLIU circuit pack in slot 1 of the other Function/Growth group and the OC-48 port on the OC-48 OLIU circuit pack in slot 1 of the other Function/Growth group at the opposite end of the upgraded OC-48 optical span:
Reference: Procedure 14-4: Perform connection and verification of optical facility | ||
13 |
Important! Perform this step only if the Optical Synchronization Source is to be reprovisioned to the upgrade OC-48 port on the OC-48 OLIU circuit pack in slot 1 of the Function/Growth group. If required at the far-end node, select Configuration → Timing/Sync to reprovision the Optical Synchronization Source to the upgrade OC-48 port on the OC-48 OLIU circuit pack in slot 1 of the Function/Growth group. Reference: Procedure 6-5: Network Element synchronization provisioning | ||
14 |
For each drop (Function/Growth to Main) cross-connection identified at the far-end node, select Configuration → Cross-Connections and use the Cross-Connection Wizard to roll the drop cross-connections to the required OC-48 port on the OC-48 OLIU circuit pack in slot 1 of the other Function/Growth group. Reference: Procedure 10-10: Bridge and roll cross-connections | ||
15 |
At the near-end node, repeat Step 13 and Step 14. | ||
16 |
Removal of wrong fiber connections will result in a service interruption. Ensure that you remove only the fiber connections for the optical span being upgraded. Important! Do not reconnect the optical fibers until instructed to do so. The optical fibers are reconnected after the OC-12 circuit pack is upgraded at each end of the optical span. At the far-end node, disconnect the transmit and receive optical fibers from the required OC-12 port on the OC-12 OLIU circuit pack in slot 2 of the Function/Growth group. Result: The system reports inc. OC12 LOS alarms for the original OC-12 ports. Alarms may also be reported at other nodes. | ||
17 |
At the near-end node, repeat Step 16. | ||
18 |
At both ends of the optical span to be upgraded, perform the following to connect the OC-48 port on the OC-48 OLIU circuit pack in slot 2 of the other Function/Growth group and the OC-48 port on the OC-48 OLIU circuit pack in slot 2 of the other Function/Growth group at the opposite end of the upgraded OC-48 optical span:
Reference: Procedure 14-4: Perform connection and verification of optical facility | ||
19 |
Important! Perform this step only if the Optical Synchronization Source is to be reprovisioned to the upgrade OC-48 port on the OC-48 OLIU circuit pack in slot 2 of the Function/Growth group. If required at the far-end node, select Configuration → Timing/Sync to reprovision the Optical Synchronization Source to the upgrade OC-48 port on the OC-48 OLIU circuit pack in slot 2 of the Function/Growth group. Reference: Procedure 6-5: Network Element synchronization provisioning | ||
20 |
If required at the near-end node, repeat Step 19. STOP! To complete the upgrade, return to the procedure that directed you to perform this procedure. End of steps |
