Tieline Bridge-IT, User Manual

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56 Bridge-IT Manual v4.0
© Tieline Research Pty. Ltd. 2019
2. Second, when multiple redundant audio streams are sent, the decoding codec
automatically reconstructs audio into a single stream on a first packet arrived basis, to
minimize program latency and ensure audio integrity.
3. Third, SmartStream features automated jitter buffer management and Forward Error
Correction (FEC) and these advanced network management tools deliver uncompromising
audio quality, while dynamically responding to variable conditions over unmanaged IP
networks like the internet.
These combined measures ensure Tieline is capable of offering a rock solid IP audio solution for
distributing IP audio economically and efficiently across broadcast networks. See the procedures
for configuring different programs using the web-GUI for more configuration details.
Fuse-IP
Tieline’s proprietary Fuse-IP data aggregation technology uses a point-to-point tunnel between two
codecs to bond multiple IP interfaces (peers). See
Configure Fuse-IP Bonding for more info.
On-Demand Failover
On-demand failover requires configuration of a primary connection and an on-demand 'cold'
backup connection. On-demand failover is activated when the dialing codec program detects the
loss of the primary connection, or if audio streaming ceases. The backup connection is then dialed
to replace the primary connection.
For details on configuring backup connections using failover see Configure Mono or Stereo Peer-
to-Peer Programs .
Forward Error Correction (FEC)
There are two modes of Forward Error Correction (FEC) available in the codec:
1. Tieline FEC.
2. RFC 2733 compliant FEC (Sessionless connections only).
FEC is designed to increase the stability of UDP/IP connections in the event that data packets are
lost. FEC works by sending a secondary stream of audio packets over a connection so that if your
primary audio stream packets are lost or corrupted, then packets from the secondary stream can
be substituted to replace them. The amount of FEC required depends on the number of data
packets lost over the IP connection. Tieline FEC transmits a secondary stream of audio data
packets over a single connection. RFC 2733 compliant FEC transmits audio packets over a
separate connection.
For more info on FEC see Configuring Forward Error Correction .
Auto Reconnect
Auto Reconnect is the simplest form of connection backup whereby the codec will redial a lost
connection continuously until it is either:
· Re-established, or
·
Dialing is manually stopped.
Auto reconnect can be enabled when configuring a codec program.
SDHC File Backup
The codec features an SD/SDHC card slot for automatic backup to MP2 or MP3 recordings if an
IP connection is interrupted. Backup connections are configured using the web-GUI and this is