WorldCast Equinox - Release 3.1 - user manual
– 07/2011
Page 167
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7.4. Backing up an IP Connection using ISDN
When the WorldCast Equinox is configured for a primary IP connection and a secondary backup ISDN connec-
tion any break in the primary audio data will force the codecs to establish a connection on the backup ISDN
link.
The WorldCast Equinox units are configured as follows. As ISDN backup works on a Master/Slave arrange-
ment (i.e. the IP Master makes and clears the ISDN calls) it is essential that the Slave codec be configured be-
fore the Master so as to avoid the Master going into backup mode.
Begin by setting up one of the ISDN speed dials on the slave unit as a backup speed dial
– see section 5.7.1
Setup ISDN Directory or section 6.6.6 CNX-ISDN Speed Dials. As a slave unit will never dial the master the
numbers are not critical but the unit must know what audio profile to use when the backup is active. Select
ISDN as the secondary connection and select the previously configured speed dial
– see section 5.5.2.3 ISDN
as Secondary Network Connection and section 6.6.1 CNX-Mode/Status.
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 5.7.1 Setup Profiles or section 6.6.5 CNX-IP Speed Dials. Select IP as the primary connection
– see
section 5.5.1.1 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.
Finally set up one of the ISDN speed dials on the master unit as a backup speed dial
– see section 5.7.1 Setup
ISDN Directory or section 6.6.6 CNX-ISDN Speed Dials. The numbers programmed will be used to establish
the ISDN backup connection and the audio profile must match the one used by the slave unit for backup. Se-
lect ISDN as the secondary connection and select the previously configured speed dial
– see section 5.5.2.3
ISDN as Secondary Network Connection and section 6.6.1 CNX-Mode/Status.
You can now make the primary connection by initiating the IP connection from both units
– see section 5.2 Fast
dial and section 6.6.4 CNX-IP Connect.
Whenever the primary connection is lost the master will connect to the slave over ISDN. Whenever the connec-
tion is restored the ISDN connection is dropped.
ISDN
Network
IP
Network
Master
Equinox
Slave
Equinox
ISDN (1-4)
IP
