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Contents
The following sections provide information on the restrictions for Cisco VLT version 2.7(9).
Cisco VLT supports only English operating systems and English locale.
Cisco VLT supports only Cisco Unified Communications Manager and Java Telephony Application Programming Interface (JTAPI) client message files.
Cisco VLT supports Cisco Unified Communications Manager SDI files but not Signal Distribution Layer (SDL) files:
Cisco VLT can use significant system CPU and memory resources, and can potentially impact performance on a shared system. See the note in the System Hardware and Operating System section about the importance of installing Cisco VLT on a machine other than your Cisco Unified Communications Manager server.
Cisco VLT supports a maximum memory usage of 1 GB. However, system performance may degrade before reaching the maximum value.
You can install only one Cisco VLT in each system.
A maximum of two running instances, one standalone and one plug-in, are allowed at the same time.
Cisco VLT installed on a 2.4 GHz Intel Pentium 4 CPU performs as follows:
Note | Cisco VLT may exhaust memory if more than 100 SDI files of at least 2.5 MB each are opened. |
Although Cisco VLT supports both H.225 and H.245 messages, you cannot identify them because the H.245 port information contained in an H.225 message is not available in the Cisco Unified Communications Manager log files.
For Cisco VLT running as a plug-in in Cisco Unified Communications Manager RTMT, the following applies:
Cisco VLT supports only little-endian, and is not aware of the endianness of trace files.
Note | Endianness refers to the order in which a computer processor stores and transmits the individual bytes of a multiple-byte data item. For more information see the glossary. |