Avaya S8 Series Manual page 143

Note:
An LSP does not accept translations if it is running a version of Communication
Note:
Manager that is older than that of the primary controller. However, the LSP
remains registered with the primary controller,
Note:
You cannot use Upgrade Tool or Avaya Installation Wizard (AIW) for the upgrade
Note:
procedures to Communication Manager Release 5.2 or later.
Stopping and starting LSPs
Before you upgrade the S8700-Series Server, you might want to stop call processing on the
LSPs. This stoppage allows the media gateway and IP telephones to quickly reregister with the
primary controller after the upgrade.
If you stop call processing on the LSPs, you must restart them when the primary controller
upgrade is complete. In addition, the stoppage of call processing on the LSPs has the following
consequences:
During the interchange between the active and standby servers, analog and digital
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telephone calls are dropped.
New calls to or from IP telephones cannot be made during the interchange.
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If the upgrade has problems so that service from both servers is lost, all telephones go out
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of service. This outage includes telephones assigned to backup service on the LSPs.
If you do not stop call processing on the LSPs, all telephones have service during the time the
LSPs are controlling calls. This service continues if there is a problem with the upgrade of the
primary controller. In addition, not stopping call processing on the LSPs has the following
consequences:
IP telephones are likely to register to the appropriate LSP during the server upgrade.
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You must reset the LSPs when the primary controller upgrade is complete to reregister the
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IP telephones to the primary controller.
Upgrading the LSPs
For more information on S8300 LSP upgrades, see Installing and Upgrading the Avaya S8300
Server, 555-234-100.
Chapter 4: Upgrading Communication Manager on an existing S8300B or S8300C
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Chapter 6: Manual upgrade of an existing S8300B or S8300C to R5.2
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Chapter 7: Migrating an S8300 Server
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Prerequisites
Issue 1 May 2009 143