WorldCast Equinox - Release 3.1 - user manual
– 07/2011
Page 164
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7. EXAMPLE CONFIGURATIONS
7.1. Backing up an IP Connection Using X.21
When the WorldCast Equinox is configured for a primary IP connection and a secondary backup X.21 connec-
tion any break in the primary audio data will force the codecs to establish a connection on the backup X.21 link.
Begin by setting up the X.21 secondary connection on both units
– select X.21 as the secondary connection
and choose an audio profile to use
– see section 5.9.2.1 X21 as Secondary Connection and section 6.6.1 CNX-
Mode/Status. Note that both units secondary connection must have the same audio profile and it must match
the X.21 line speed
– but this can be different from the audio profile used for the primary connection.
Next set up the IP primary connection on both units. On each unit you need to program an IP speed dial with
the connection information for the other unit (e.g. IP address of other unit, port number, packet size etc..)
– see
section 5.6.1 Setup IP Profiles or section 6.6.5 CNX-IP Speed Dials. Select IP as the primary connection
–
see section 5.5.1.2 IP as Primary Network Connection and section 6.6.1 CNX_Mode/Status. Note that both
units primary connection must have the same audio profile
– but this can be different from the audio profile
used for the backup connection.
Whenever the primary connection is lost the master will connect to the slave over X.21
– as X.21 is a perma-
nent connection no signaling is required to make the connection. Whenever the primary connection is restored
the units will switch to using it
– although the X.21 connection will remain active.
Note:
Whenever the connection is restored to IP from X.21 the DSP is restarted and this can some-
times result in momentary loud audio distortion
IP
Network
X.21
Network
Master
Equinox
Slave
Equinox
IP
X.21
