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Avaya Modular Messaging Concepts and Planning Guide
13-16 November 2004
Avaya Modular Messaging Concepts and
Planning Guide
Storage planning
Table 13-6 provides a calculator for storage planning.
Total storage requirements
Total daily storage (MB) — 0.388 1.848
Average retention period (days) 10 — —
Total message store requirement
(MB)
—3.88 18.48
E-mail storage allocation
Current e-mail storage
allocation per subscriber (MB)
50 — —
Percentage of current e-mail
allocation for voice-mail
— 7.76% 36.96%
Table 13-5. Storage capacity calculation example
Assumptions per subscriber
GSM
encoding
G.711
encoding
Table 13-6. Storage planning
Assumptions GSM G.711
Assumptions per subscriber
Subscribers 5,000
Call Answer messages per day 4
Average duration of Call Answer messages 30 seconds 47 KB 234 KB
Fax messages per day 0.05
A length of fax messages 3 pages 240 KB 240 KB
Local messages sent 1
Network messages sent 0.04
Local messages received 1
Network messages received 0.06
Average message length 60 95 KB 469 KB
Average retention period 2 days
Message Store (1=MSS, 0 = E-mail) 1