To determine if additional voice ports
are needed on your system to support the AMIS Analog Networking and/or Message
Delivery features, first consider the amount of traffic (number and length
of messages) you expect to occur during the busiest time of the day.
Consider the following to help you determine whether there
are sufficient voice ports on the system:
- If you do not plan to use the AMIS Analog Networking
and/or Message Delivery features during the busy hour (for example,
if you plan to allow messages to be transmitted only at night), you
probably have enough voice ports to support this feature. However,
after the feature is activated, you might want to verify that system
performance is not affected by following the steps in Monitor
Voice Port Use.
- If you plan to use the AMIS Analog Networking and/or
Message Delivery features during the busiest time of the day, consider
the impact of these features on voice-port use as follows:
- If the expected AMIS analog networking and/or
message delivery traffic is light, you probably do not need to
add any voice ports to support this feature. However, after the
feature is activated, you might want to verify that system performance
is not affected by following the steps in the Monitor
Voice Port Use.
- If the expected AMIS analog networking and/or
message delivery traffic is heavy, perform the following calculations
to determine the effect these features could have on system performance.
Calculate Expected Voice Port Use
If you plan to use the AMIS Analog Networking
and/or Message Delivery features during the busiest time of the day and
you want to estimate the impact these features might have on your system
performance, perform the following calculations:
- Estimate the number
of AMIS analog networking and/or message delivery messages that you
expect to occur during the busiest hour of the day.
- Estimate the anticipated
length of each message. Each AMIS and/or message delivery message requires
an additional 45 seconds of overhead to transmit.
- Multiply the values
from Steps 1 and 2 as follows:
(# messages) (average message
length + 45 seconds) =
number of seconds of port use
- Divide the total
seconds of projected port usage by 3600. This number represents the
additional port usage required to support this feature during the busy
hour.
X seconds of port use / 3600
= # additional port usage
- Add this number to
the maximum average number of ports in use. See Monitor
Voice Port Use section for the form and field needed on your
system to get these values.
- Determine if the
resulting Grade of Service (GOS) is acceptable. If not, plan to
install the recommended number of additional voice ports before
implementing the AMIS Analog Networking or Message Delivery features.
For information on calculating the GOS, see Feature
Reports and Grade of Service. A GOS of .05 is recommended (a
lower GOS is desirable). If the GOS is greater than .05, additional
voice ports are recommended. Contact your sales representative.
Monitor Voice Port Use
Use the following procedure to determine
if additional voice ports are needed on your system. You can use this procedure
after activating the AMIS Analog Networking and/or Message Delivery features
to determine their impact (if any) on system performance:
- Display the Feature Daily Traffic form by using
the list measurements feature day command and record the number
you see in the
Maximum Average Ports in Use field.
- Calculate the Grade of Service (GOS). For information
on calculating the GOS, see Feature
Reports and Grade of Service. A GOS of .05 is recommended (a
lower GOS is desirable). If the GOS is greater than .05, additional
voice ports are recommended. Contact your sales representative.
