Avaya S8700 - HYB-LINE (Hybrid Line)

Maintenance-Object Repair Procedures
555-233-143
8-904 Issue 1 May 2002
HYB-LINE (Hybrid Line)
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’s Name (in
Alarm Log) Alarm Level
Initial SAT Command to
Run
1
1. UU is the universal cabinet number (1–64 for ATM PNC, 1–44 for CSS PNC). C is the carrier
designation (A, B, C, D, or E). SS is the number of the slot where the circuit pack resides (01–21).
pp is the 2-digit port number (01, 02,...).
Full Name of MO
HYB-LINE MINOR test port UUCSSpp l Hybrid Line
HYB-LINE WARNING test port UUCSSpp 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.