Section 9: Quick Start
T
ieline
Page 48
T E C H N O L O G Y
Table 3: Algorithm Connection Bit rate Table
All of the factory default algorithm settings can be changed for POTS, ISDN, GSM/3G and X.21 connections. For more information on
changing these settings please see the main reference manual.
3
If your connection bit-rate is 16,800 bps or lower, we recommend using the
Voice G3
algorithm. It provides up to 7.5 kHz audio at 9,600 bps.
4
If you wish to connect using a GSM HSCSD connection and achieve up to 15 kHz in audio quality, you will need to change the default algorithm setting to
Music
.
5
Stereo IP and 3G/IP connections using the
Music
algorithm require a minimum connection bit rate of 48kbps.
6
Using Voice G3, there is no need to negotiate higher than 14.4 or 16.8kbps to maximize audio quality. Staying at lower bit-rates improves link stability over TCP.
7
Using Voice G3, there is no need to negotiate higher than 14.4 or 16.8kbps to maximize audio quality. Staying at lower bit-rates improves link stability over TCP.
8
Only available over a point-to-point crossover cable (i.e. CAT 5) and using high quality LAN switching.
Connection Type
Algorithm
Minimum Bit-rate and Bandwidth
Recommended Connection for On-air use.
POTS
Music
Up to 7.5kHz at 9,600 bps
3
Up to 15kHz at 24,000 bps
POTS
Voice G3
7.5 kHz at 9,600 bps (Optimized for 16.8 kb, use
for voice only)
7.5 kHz at 9,600 – 24,000 bps (use for voice only)
ISDN
Music Plus
20 kHz on all ISDN connections.
ISDN
Music
15kHz on all ISDN connections.
ISDN
MP2
24 kHz mono at 64,000 bps.
ISDN
G.711
3 kHz at 64 kbps.
ISDN
G.722
7 kHz at 64 kbps.
GSM CSD
Voice G3
7.5 kHz at 9,600 bps.
7.5 kHz at 9,600 bps
GSM HSCSD
Music
4
7.5 kHz at 14,400 bps (Using Voice G3)
15kHz at 28,800 bps (Using Music)
Music Plus
Up to 20kHz mono at 48,000 bps
Up to 20kHz mono at 48,000 bps
Music
5
Up to 15 kHz at 24,000 bps
Up to 15kHz at 24,000 bps or higher
3G/IP
Voice G3
7.5 kHz at 9,600 bps (use for voice only)
7.5 kHz at 9,600 - 14,400 bps
6
(use for voice only)
Music Plus
Up to 20kHz mono at 48,000 bps
Up to 20kHz mono at 48,000 bps
IP/Internet
Music
Up to 7.5kHz at 24,000 bps
Up to 15kHz at 24,000 bps or higher
IP/Internet
Voice G3
7.5 kHz at 9,600 bps (use for voice only)
7.5 kHz at 9,600 - 14,400 bps
7
(use for voice only)
IP
Raw Audio
8
15 kHz at 2.3 megabit minimum.
Music Plus
20 kHz on all X.21 connections.
X.21
Music
15kHz on all X.21 connections.
X.21
MP2
24 kHz at 64,000 bps.
X.21
G.711
3 kHz at 64 kbps.
X.21
G.722
7 kHz at 64 kbps.
