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HYB-LINE (Hybrid Line)
Issue 1 June 2005 1329
HYB-LINE (Hybrid Line)
S8700 | 8710 / S8500
Hybrid Line is another term for the MFAT (Multi-Function Analog Telephone). The Hybrid Line
set is also known as an SCS (Small Communications System).
The TN762B Hybrid Line circuit pack supports eight of these multifunction analog telephone
sets. The Hybrid Line sets use three pairs of wires: an analog voice pair, a transmit/receive pair,
and a power pair.
This section describes HYB-LINE (Hybrid Line) maintenance. HYB-LINE maintenance is closely
related to, and sometimes interacts with, HYB-BD (Hybrid Line circuit pack) maintenance. This
interaction should be kept in mind when troubleshooting Hybrid Line problems.
This section occasionally refers to a station’s service state. These service states are defined as
follows:
Use status station to determine terminal service state. Status is reported as either out of
service, in service, or disconnect. The latter is equivalent to the ready-for-service state.
MO Name in
Alarm Log
Alarm
Level
Initial SAT Command to Run Full Name of MO
HYB-LINE MIN test port location l Hybrid Line
HYB-LINE WRN test port location l Hybrid 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.