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MET-LINE (MET Line)
Issue 1 June 2005 1561
MET-LINE (MET Line)
S8700 | 8710 / S8500
The TN735 MET Line circuit pack supports four Multibutton Electronic Telephone (MET) station
sets. Each MET set uses three pairs of wires: an analog voice pair, a transmit pair, and a
receive pair. Power is sent over the transmit and receive pairs. The MET Line circuit pack
supports every 10-, 20-, and 30-button set.
This section describes MET-LINE (MET Line) maintenance. MET-LINE maintenance is closely
related to, and interacts with, MET-BD (MET Line circuit pack) maintenance. This interaction
should be kept in mind when troubleshooting MET Line problems.
This section occasionally refers to a station’s service states. The service states are defined as
follows:
Use status station to determine terminal service state. Status is reported as out-of-service,
in-service, or disconnect, which means the station is in the ready-for-service state.
MO Name in
Alarm Log
Alarm
Level
Initial SAT Command to Run Full Name of MO
MET-LINE MIN test port location l MET Line
MET-LINE WRN test port location sh MET Line
Out-of-Service The port, and thus the station, have been removed from service.
A busyout of a port will cause it to be out-of-service.
Ready-for-Service The port on the circuit pack has been put into service, but the
voice terminal has not yet established signaling
communications with the port.
In-Service The voice terminal has established signaling communications
with the port, and the system is ready to process calls to and
from that station. A terminal in the ready-for-service state will
progress to the in-service state if it is functioning normally, but it
can also be forced into the in-service state if it goes off-hook.