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Other planning considerations
November 2004
Avaya Modular Messaging Concepts and
Planning Guide
13-15
! The average number of Call Answer messages sent and received
received per day
! The average duration of Call Answer messages
! The average number of voice messages sent and received
received per day
! The average duration of voice messages
! The average number of fax messages sent and received per day
! The average length and size of fax messages
! The average retention period for storage of messages
! The number of subscribers in the organization
! Average retention period for storage of messages
An example of
e-mail server
storage capacity
calculation
To calculate the impact that voice messages will have on the current
e-mail store based on which encoding algorithm is being used, consider
the example shown in Table 13-5.
Table 13-5. Storage capacity calculation example
Assumptions per subscriber
GSM
encoding
G.711
encoding
Voice and Call Answer messages
Total number of voice and Call
Answer messages sent and
received per day
6— —
Average length, in seconds 40 — —
Size in Kilobytes per second
(KBps)
— 1.58 7.81
Space required for storage of
new messages (MB)
— 0.370 1.830
Fax messages
Total number of fax messages
sent and received per day
0.075 — —
Average length of fax, in pages 3 — —
Size in KB/page (subject to
coverage, quality, file format)
80 — —
Space required for storage of
new fax messages (MB)
— 0.018 0.018