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SIGNAL
Working Channel (Active): Handshake Mode
Vol/Sq (J7-2)
RUS In (J7-14)
Rus Out (J7-15)
RPT Inhibit (1950 DIS) (J6-5)
Rem PTT (J7-9)
Delay PTT (J6-1)
Rem PTT (J6-16)
DET DIS (J6-10)
MOD Out (J7-4)
CG HI (J7-4)
Phone lines (J6 6, 7, 8, & 9)
Working Channel (Active): During Analog Call
Vol/Sq (J7-2)
RUS In (J7-14)
Rus Out (J7-15)
RPT Inhibit (1950 DIS) (J6-5)
Rem PTT (J7-9)
Delay PTT (J6-1)
Rem PTT (J6-16)
DET DIS (J6-10)
MOD Out (J7-4)
CG HI (J7-4)
Phone lines (J6 6, 7, 8, & 9)
Table 10 - Interface Status During Various States (Continued)
STATE
Data
Listening to High Speed handshake.
N/A
RUS activity is being ignored during the handshake.
L/H
Receiver is muted (no receiver audio to the transmitter) until call is validated.
Low
If a Voting system, this line is low during a Control Channel. The 1950 tone
is present on the Line Output.
N/A
If inbound call is from console or IMC this signal will be considered after
channel is assigned.
High
Transmitting High speed data (handshake).
High
No calls from the remote line allowed until channel is assigned.
High
Transmitting high speed data, low speed data disabled.
Data
High speed data (handshake) to be transmitted is sent to the station on this
line now. (Simulcast Remote Transmit Site.)
Data
No Low speed data until channel is assigned.
Analog
If Voter or Simulcast, these lines contain modem communication between the
Voter and Main Site/Control Point GETCs, otherwise inactive.
Analog
Voice and Low speed data from the receiver on this line. GETC listening to
Low speed data.
Low
Carrier activity indicated.
High
Receiver is unmuted. Receiver audio is routed to the transmitter.
High
If a Voting system, this line is high (+5 Vdc) during a Clear Voice Working
Channel. The 1950 Hz tone is muted and voice audio is present on the Line
Output.
H/L
If inbound call from console or IMC this line is pulled low, after channel is
assigned, as a result of 2175 Secur-it-Hold on the line input to the station.
High
Transmitting.
H/L
If call is from the remote line this line is Low which routes transmitter audio
from the line input.
Low
High speed data disabled, low speed data enabled.
Data
No High speed data is sent to the station on this line now.
Data
Low speed data is being transmitted for the duration of the call.
Analog
If Voter or Simulcast, these lines contain modem communication between the
Voter and Main Site/Control Point GETCs, otherwise inactive.
STATUS
LBI-38988
25
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