PortaNet User Manual
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ProntoNet
MASTER
ProntoNet
SLAVE
ISDN
Backup Line
64 / 128 Kbps
Main Line
IP / X21
ISDN CALL
when Backup
is ON
Backup On
when ISDN
CALL is
received
B O O K E D I T O R [ 0 1 ]
{ I S D N } I P E N C 1 E N C 2
Backup configuration
according the phone
book - index 1
As we can see, the PortaNet configured as MASTER monitors the main line and it
decides when the backup ISDN line must start to work. The PortaNet SLAVE only
works in ISDN depending on if there is communication by it.
The
user
must
be
careful
to
disable
the
backup
mode
(BACKUP_ENABLE_OFF) to avoid that there was any interference in the
installation and configuration operations of the unit.
IX.10.1.1
PortaNet MASTER operation
As we mentioned before, the PortaNet configured as MASTER monitors
continuously if the main line is working appropriately once the backup option has
been validated in the menu (BACKUP-ENABLE-ON). The PortaNet MASTER
decides if the main line is dropped when the audio synchronism has been lost for
the programmed time in TIMER-DOWN option of the menu or when as many
drop-outs as defined in the Drop-outs option of the menu have occurred within
the period of time configured by the user
20
.
20
This criteria for the BackUp operation was included on version 4.8.1.