Installation guide

6
Release Notes for Cisco Voice Interworking Service Module Release 3.0(0)
Part Number OL-2523-01 Rev. B0, January 9, 2004
VISM Features
Multiple Announcement Requests for the Same Endpoint
If an announcement is being played on an endpoint (in one direction) and a subsequent announcement
request is received for the same endpoint (in the same direction), the playing announcement will
continue and the new announcement request is ignored.
If an announcement is being played on an endpoint (in one direction) and a subsequent announcement
request is received for the same endpoint (in the other direction), the playing announcement is stopped
and the new announcement is then played. Events are not generated for the stopped announcement.
Announcement File Server
Announcements are contained in an announcement file server, which resides on an IP network reachable
from the VISM using Trivial File Transfer Protocol (TFTP).
Announcement File Server Name
You can configure the announcement file server node name on the VISM the same way that you configure
a node name for the TFTP server.
Announcement File Server Directory Structure
You may use any directory or path on the file server as the main directory for storing announcement files.
If you do not provision an announcement path prefix on VISM, the main announcement file directory is
the default TFTP directory on the server. If a path prefix is provisioned, this prefix is used as the main
announcement directory. If the prefix is not absolute (does not begin with a forward slash (/)), the prefix
is relative to the default TFTP directory.
You can configure codec subdirectories under the main announcement directory on the announcement
file server. A codec subdirectory exists for each codec used for announcement files.The subdirectories
may be one or more of the following:
• g711u/
• g711a/
• g726_32k/
• g726_24k/
• g726_16k/
• g729_a/
• g7231_high_rate/
• g7231_a_high_rate/
• g7231_low_rate/
• g7231_a_low_rate/
When the call agent requests that an announcement is to be played toward the TDM network on an
unconnected endpoint, you can specify the codec to be used.
Another level of directories might be configured to group announcement files by language. These
directories would be specified by the call agent (or when provisioning the VISM) as part of the
announcement file name. For example, the call agent might specify the announcement file name to be
english/ann1.au. If the file was encoded in G.729a and the prefix was /tftpboot, the file would reside at
/tftpboot/g729_a/english/ann1.au.