Avaya Communication Manager Administrator's Manual page 398

Managing Announcements
Troubleshooting VAL Announcements
Viewing announcement measurements
You can view a report of announcement measurements, including how many times an announcement was
queued to play, how many callers dropped while in queue, and how many times all announcement ports
were busy during the report period.
For more information about this report, see Reports for Avaya Communication Manager on your
documentation CD.
Announcement capacities and load balancing
Understanding how Communication Manager handles annoucements helps with questions of capacity the
load-balancing of announcement traffic. The Avaya S8700 and S8300 media servers support up to 3,000
announcements across the Communication Manager system. Each of as many as 10 integrated
announcement boards (and each G700 virtual VAL source) is limited to 256 announcements. All Avaya
G700 Media Gateways in the system can be assigned as VAL sources, for a maximum of 250 G700 VAL
sources in a large S8700 media server configuration also with up to 10 TN2501 VAL boards, providing
an ultimate capacity of 260 sources for the Avaya DEFINITY R and S8700 servers.
Wach TN2501 has 31 playback ports (with 60 minutes of storage capacity) and each G700 VAL source
has 15 playback ports (with 20 minutes storage capacity). Initially each caller that is to hear a
non-barge-in announcement on that source is connected to an available port until each port has one caller
connected. Initially 31 callers can be hearing an announcement from a single TN2501 board (15 with a
G700 VAL source). The same announcement can be playing from multiple ports, each starting at a
different time. Once all ports are busy playing announcements, subsequent callers that are to hear an
announcement residing on that board/source are queued for that source. Communication Manager queue
size over all integrated announcement sources is 4,000 callers (DEFINITY Server R & S8700/S8300
media servers). When a port becomes available, all callers (up to 1,000) waiting in the queue for a
specific announcement on that source are connected to the available port to hear the announcement play
from the beginning on a first-in, first-out basis. At any given time you can have as many as 1,000 callers
hearing the same announcement on a given port of a board/source, yielding a (theoretical, system-wide)
capacity of 31,000 callers connected to a VAL board (or 15,000 callers connected to a G700 Media
Gateway virtual VAL source). Factor in barge-in announcements which continuously play from a single
port (that can have as many as 1,000 callers connected at the same), and this provides a very, very large
capacity for playing announcements. The
monitor the system and help determine burst conditions, allowing for better load balancing of the traffic.
Related topics
For more information, see
398
Measurements Announcements
Announcements on page 1356.
Administrator's Guide for Avaya Communication Manager
commands can be used to
November 2003