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The following table compares the digital protocols supported for
use by Message Networking.
| TCP/IP protocol |
Encoding algorithm |
Bytes/ second |
Average voice message (60 seconds) including
overhead |
Average fax message (3 pages) including overhead
|
Average subscriber update length (from/to, assuming
a 3-second voice name) |
TCP/IP port used |
| AUDIX Digital |
CELP |
2K |
135K bytes |
230K bytes |
6K bytes |
5500 (decimal) |
| Aria Digital |
SBC |
3K |
250K bytes |
450K bytes |
9K bytes |
4000 (decimal) |
| Serenade Digital |
CVSD |
3K |
250K bytes |
450K bytes |
9K bytes |
22136 (decimal) |
| SMTP/MIME |
GSM |
1.7K |
140K bytes |
350K bytes |
5K bytes |
25 (decimal) |
| G.711 µ-law and A-law |
8K |
660K bytes |
350K bytes |
24K bytes |
25 for messages (55389 for Avaya MM LDAP, 56389
for Message Networking LDAP) |
| VPIM v2 |
ADPCM |
4K |
330K bytes |
350K bytes |
12K bytes |
25 (decimal) |
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