Preserving connections while upgrading an S8700-series Media Server

Transcription

1 Preserving connections while upgrading an S8700-series Media Server During an upgrade to Communication Manager Release 3.0 and earlier, calls were dropped when the interchange between servers occurred. Now, when upgrading from Communication Manager Release 3.0 to a higher release, you can preserve the audio portion of many stable telephone calls throughout the course of the upgrade. You can also preserve the data transmission between many stable fax, data, or multimedia endpoints. A "connection" is the transmission of voice or data between two endpoints over the bearer network. A connection does not include the control signaling portion of calls, such as that used for dialing, ringing, connecting, and disconnecting. A "connection" also does not include signaling for the use of phone features such as conference, hold, or forwarding. A "stable" call is generally one in which the connection has been established and control signals are no longer being used. When a connection is preserved, it is not dropped when the upgrade interchange begins. Instead, the voice or data transmission of the call continues until one or both of the callers end the call. Callers can end the call while the upgrade is still in progress or after the upgrade is complete. During the course of the upgrade, Communication Manager does not allow the use of additional calling features on preserved connections. Every IP telephone reregisters after an upgrade is complete. An IP telephone whose call is preserved during an upgrade also reregisters when the upgrade is complete, but only after the call also is complete. Connections not preserved As with previous releases of Communication Manager, the following connections are not preserved during an upgrade: H.323 IP trunks SIP trunks (for example, trunks established for SIP endpoints that use Communication Manager and SES for SIP connections) ISDN-BRI trunks or stations Unstable calls Examples of unstable calls include those that are in the ringing or dialing stage, calls that are on hold, or calls in any state that requires control signaling. Unstable calls are dropped, regardless of whether they are carrying voice or data transmissions. October

2 Preserving connections while upgrading an S8700-series Media Server SAT sessions Adjunct links Examples of adjunct links include those to a CMS, ASAI, or CDR adjunct, a link to a system printer, or any other links configured using the IP Services screen. Also, connections are not preserved during an upgrade that includes a migration of server hardware. Therefore, connections are not preserved in a migration from an S8700 Media Server to an S8710/S8720 Media Server, or from an S8710 Media Server to an S8720 Media Server. Tools to preserve connections during an upgrade Upgrade Tool If you use the Upgrade Tool to upgrade an S8700-series Media Server from Communication Manager R3.0 or higher, you preserve all preservable connections automatically during the upgrade. Pre Upgrade Step Web page If you do not use the Upgrade Tool for an upgrade, you can use a new web page, the Pre Upgrade Step page (Figure 1), to manually preserve connections during a Communication Manager software upgrade (see Manual steps to preserve connections during an upgrade on page 2). When you select Continue on the Pre Upgrade Step page, you lock the translations on the active server, which in turn allows the standby server to precisely synchronize translations and preserve connections during the interchange. When the upgrade is complete, the translations are unlocked and the normal synchronization process resumes. Should you decide to discontinue the upgrade after running the pre-upgrade step, click Undo on the Pre Upgrade Step page. This will unlock translations and reset the state of health. Manual steps to preserve connections during an upgrade You perform manual steps to preserve connections immediately after you perform all standard preupgrade tasks (see When you perform steps to preserve connections on page 5). To preserve connections during an upgrade, do the following steps: Connecting to the active media server If on site, connect to the services port on the back of the active media server. If off site, log on to the active media server using the actual IP address of the media server. 2 Preserving Connections During an S8700-series Upgrade

3 Accessing the media server To access the media server, perform the following steps: 1. Start the Web browser. 2. In the Address field, type and press Enter to bring up the login Web page. 3. Log in as craft or dadmin. 4. When asked Do you want to suppress alarms?, select yes. The system displays the Integrated Maintenance Web Pages web page. 5. Click Launch Maintenance Web Interface to get to the Main Menu. Activating connection preservation during an upgrade To activate connection preservation, perform the following steps: 1. Under Server Upgrade, click Pre Upgrade Step. The system displays the Pre Upgrade Step window. Figure 1: Pre Upgrade Step window October

4 Preserving connections while upgrading an S8700-series Media Server 2. On the Pre Upgrade Step window, click Continue to start the pre-upgrade step. The system shows the status of the pre-upgrade step operations. When completed, your translations are synchronized. Communication Manager can now preserve connections during the upgrade. Logging off the active server Log off of the active media server and continue with the standard upgrade process (see When you perform steps to preserve connections on page 5).! CAUTION: CAUTION: If you decide not to proceed with the upgrade or you stop the upgrade process, return to the Pre Upgrade Step window and click Undo (see Deactivating connection preservation on the active server (if necessary) on page 4). If you do not undo the Pre Upgrade Step, the standby server will not be synchronized for subsequent translation changes. Deactivating connection preservation on the active server (if necessary) Should you decide not to do the upgrade after running the Pre Upgrade Step, click Undo. 4 Preserving Connections During an S8700-series Upgrade

5 The system unlocks translations and resets the state of health. The system shows the status of undoing the pre-upgrade step after clicking Undo. If you complete the upgrade, Communication Manager deactivates the connection preservation setup automatically. You do not need to deactivate connection preservation manually. When you perform steps to preserve connections After you have completed the last of the preupgrade tasks, you perform the steps to preserve connections. You then proceed to upgrade software on both servers following the normal R3.0 upgrade steps, which basically means you do the following: Upgrade the standby server Perform an interchange Upgrade the other server. In the following excerpt from the upgrade checklist in Upgrading, Migrating, and Converting Media Servers and Gateways, , the steps to preserve connections are highlighted: October

6 Preserving connections while upgrading an S8700-series Media Server Excerpt from Upgrade Checklist Preupgrade Tasks Backing up files on the standby media server Verifying the backup on the standby media server Suppressing alarming on standby media server Connecting to the active media server Accessing the media server Activating connection preservation during an upgrade Logging off the active server Upgrade tasks for the first media server Connecting to the standby media server Busying out the standby media server Checking the software release on the standby media server Upgrade tasks for the second media server: 6 Preserving Connections During an S8700-series Upgrade