Instruction manual

Maintenance Console
9-5
Maintenance and Troubleshooting
When a maintenance-busy TTR is retested and passes the test, it is
automatically placed back into service.
You can manually place a TTR into a maintenance busy state. The TTR
remains in the busy-out state until you manually restore it and place it back into
service. You can manually restore a busied-out TTR regardless of whether the
TTR was busied out by the TTR audit or manually busied out.
The following are additional considerations for TTRs:
■ When the system puts a slot in the Slot-Busy mode, the TTRs are
unavailable as a system resource but the are not considered by the system
to be in the Busy-Out mode.
■ You can manually busy out a TTR on a slot in the Slot-Busy mode.
■ You cannot manually restore a TTR on a slot in the Slot-Busy mode.
■ A Warm Start restores service to all TTRs that were busied out by a TTR
Audit. However, a Warm Start does not restore TTRs manually busied out.
■ A Cold Start restores service to all TTRs that were busied out by a TTR
Audit. However, a Cold Start does not restore TTRs manually busied out.
Release 1.0 of the MERLIN Messaging System resets itself at 3:00
a.m. every day. In Release 1.1 and later MERLIN Messaging
Systems, you can change or disable the reset time. During the first 30
seconds of the messaging system’s reset, its TTRs do not function. If
the Touch-Tone Receiver Test tests these TTRs at this time, it
removes the TTRs when they fail. Unless you manually restore these
TTRs, they will remain maintenance busied-out until the next audit.
■ The Touch-Tone Receiver Test does not test touch-tone receivers
that are manually placed into maintenance busy. Therefore, these
TTRs cannot automatically be placed back into service. They must
be manually restored.
■ The Touch-Tone Receiver Test does not test TTRs on busied-out
slots.