Retry Timer (sec) - Elapse time after a call fails before another call may be retried. Applies before a phone number is blacklisted.

Blacklist

Figure 14-11 Blacklist

The phone numbers on this list cannot be entered directly, instead, they are numbers which have had problems connecting in the past. The user can take a number off the list by entering the index number of entry.

System Maintenance 131

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ZyXEL Communications Prestige 128 user manual Blacklist