Filter
Top Products
Avaya Modular Messaging Concepts and Planning Guide
5-20 November 2004
Avaya Modular Messaging Concepts and
Planning Guide
The size of an encoded message (GSM or G.711 format) and the MIME
transfer size of a message affect the time GUI clients take to retrieve and
play these messages locally. However, in a corporate setting, retrieval of
messages takes place on a high-speed LAN, with a speed of 10 Mbps or
more. Hence, the size difference between the two encoding formats does
not noticeably affect message download time.
When subscribers connect to the network remotely, using a 56 Kbps
dial-up line, they may have an effective connection speed of 32 Kbps or
less. The transfer rate of a GSM or G.711-encoded message over such a
connection is at the most 4 KBps. Therefore, subscribers actually transfer
the binary content of voice messages at a rate of at most 2.9 KBps over
such a connection.
Thus, a GSM-encoded message is retrieved in about 0.55 times the length
of the message and a G.711-encoded message is retrieved in about 2.75
times the length of the message. For example, a GSM message that is one
minute long will take 33 seconds to download and a G.711 message of the
same length will take about 2.75 minutes to download.