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Other planning considerations
November 2004
Avaya Modular Messaging Concepts and
Planning Guide
13-13
Calculating the message storage capacity
Modular Messaging supports the GSM and G.711 encoding formats.
Table 13-4 shows the storage spaces required to encode voice using the
GSM and G.711 formats.
Note: These calculations use the following definitions:
1024 bytes = 1 KB
1024 KB = 1 MB
Storage space available on the MAS
The maximum hours available on the MAS for storage of Call Answer
messages are :
! Maximum for GSM storage: 5,000
1
hours
! Maximum for G.711 storage: 1,000
1
hours
The hours of storage for offline Call Answer message storage are used
when the message store is not available.
Table 13-4. Encoding rates and storage space
Encoding rate GSM G.711
Voice messages
Bytes per second (Bps) 1,625 8,000
Kilobytes per second (KBps) 1.58 7.81
Kilobytes per minute (KB/min) 95.2 468.8
Megabytes per hour (MB/hour) 5.6 27.5
Fax messages
Kilobytes per page (subject to
coverage, quality, file format)
80 80
1. These values are estimated maximum values and are not guaranteed. The storage capacity may be
reduced by the use of other files, such as log files.