ATT DEFINITY Communications System Generic 3 Pocket Reference Instructions Manual

							CONTROL CIRCUIT PACKS
Switch Node Interface TN573 (G3rV2)
Terminates a fiber-optic link from a Switch Node Interface (SNI) in a
switch node to:
l
l
lSNI in another switch node carrier
El in a PPN
EI in an EPN
System Access and Maintenance TN1648
(G3rV2)
The TN1648 is an SPE component used for system maintenance.
A processor on the TN1648 runs control routines that connect to
maintenance software running on the RISC processor.
The TN1648 has two EIA-232 interfaces: one for the administration
terminal and, when there is duplication, one for a terminal con-
nected to the off-line processor.
The TN1648 has the following attributes:
l
l
l
l
lConnection to G3-MT for system administration
Alarm monitors and outputs
Power supply controls
Reserve power monitors
Emergency Transfer control
Sanity timer for SPE software sanity
Time-of-day clock used for application software and
time-stamping
Alarm panel
Connects to and terminates one end of the processor-
multiplexed bus
l
l
l
l
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							CONTROL CIRCUIT PACKS
Tape Drive TN1656
The TN1656 stores the software information for the system. It con-
tains a tape drive that provides 120 Mb of storage space and pro-
vides an LED that monitors the activity of the tape drive.
Tone-Clock (TN419B) — non-US Installations
The TN419B supplies call progress tones, touch tones, answer-
back tones, and trunk transmission test tones. The TN419B pro-
vides 2 MHz and 160 kHz clocks, and the 8 kHz frame clock. This
circuit pack can transmit the system clock and tones on either TDM
bus A, TDM bus B, or both TDM bus A and TDM bus B. This cir-
cuit pack contains a ring voltage alarm detection circuit.
Tone-Clock TN768 (standard in multicarrier
cabinet—optional in single-carrier cabinet)
Supplies timing, which includes Stratum 4 timing, to the port net-
work in which it resides. It also provides the following tones: call
progress, touch-tones, answer-back, and trunk transmission test.
The TN768 provides the following clocks: 2 MHz, 160 kHz, and
8 kHz.
Tone-Clock TN780 (G3V2)
Connects to an optional Stratum 3 clock and monitors it. It also
couples the Stratum 3’s output to local clocks.
The TN780 provides the following tones: call progress, touch-
tones, answer-back, and trunk transmission test. It also provides
the following clocks: 2 MHz, 160 kHz, and 8 kHz.
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							CONTROL CIRCUIT PACKS
Tone Detector (TN420C) —
non-US Installations
The TN420C can be administered to detect and analyze tones on
the TDM bus. The TN420C has two network processing elements
(NPEs) with eight channels that provide the following: four dual tone
multifrequency receiver (DTMF) ports, two general purpose tone
detector (GPTD) ports, and two digital loop-around ports.
Tone Detector TN748C
The TN748C has four touch-tone receivers and two general-
purpose tone receivers that detect the following: call progress
tones, modem answer-back tones, transmission test tones, and
noise. Also provides detection required for the following: Automatic
Route Selection (ARS), off-premises (out-of-building) keyboard dial-
ing, and off-premises abbreviated dialing.
Tone Detector/Generator TN756
(single-carrier cabinet)
Provides four touch-tone receiver ports, two tone detector ports,
tone generation, and clock generation It is used instead of TN768
and TN748C in systems without DS1, EPN, or DO.
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							PORT CIRCUIT PACKS
PORT CIRCUIT PACKS
Analog Line (8-port)
Analog Line (8-port)
Analog Line (8-port)
Analog Line (8-port)
Analog Line (16 port)
Analog Line (16-port)
Analog Line (16 port)
Analog Line (16 port)
Analog Line (16 port)
Announcement
Auxiliary Trunk
Auxiliary Trunk
CO Trunk
CO Trunk
CO Trunk
CO Trunk
CO Trunk
CO Trunk
Data Line (EIA)
DID Trunk
DID Trunk
DID Trunk
DID Trunk
DID Trunk
DIOD Trunk
Digital Line
Digital Line
DS1 Interface
DS1 Interface
DS1 Converter
DS1 Tie Trunk
Hybrid Line
ISDN LineTN467
TN468B
TN742
TN769
TN479
TN746B
TN2135
TN2144
TN2149
TN750 or TN750B
TN417
TN763B/C/D
TN438B
TN447
TN465 or TN465B
TN747 or TN747B/C
TN2138
TN2147
TN726
TN436B
TN459B
TN753
TN2139
TN2146
TN429
TN754 or TN754B
TN2136
TN767B
TN464C
TN574
TN722B
TN762 or TN762B
TN556
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							PORT CIRCUIT PACKS
MET Line
Pooled Modem
Speech Synthesizer
Speech Synthesizer
Speech Synthesizer
Tie Trunk
Tie Trunk
Tie Trunk
Tie Trunk
Tie Trunk
Tie TrunkTN735
TN758
TN433
TN457
TN725 or TN725B
TN437
TN439
TN458
TN497
TN760D
TN2140
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							PORT CIRCUIT PACKS
Analog Line (TN467) — non-US Installations
The TN467 provides eight ports for an interface between analog
voice terminals and the TDM bus. The TN467 has administrable
A-law companding, µ-law companding and complex input
impedance. This circuit pack provides secondary lightning
protection.
Analog Line (TN468B) — non-US Installations
The TN468B provides 16 analog line ports. Each port has tip and
ring signal leads. The TN468B is defaulted to A-law companding
and allows a down-link message to override the default and choose
µ-law companding (depending on how it is administered). The
TN468B has administrable ring patterns and secondary lightning
protection.
Analog Line TN742, TN769, TN746, TN746B,
and TN479
These circuit packs provide the interface between analog voice ter-
minals and the system. The TN742 and TN769 each has 8 ports.
The TN746, TN746B, and TN479 each has 16 ports. Each port has
the following signal leads: tip (T) and ring (R).
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							PORT CIRCUIT PACKS
Analog Line
Circuit Packs
FeatureTN742TN769
Number of Ports
88
Neon Message Waiting IndicatorsYes No
LED Terminals Yes  Yes
Feed Voltage-48 V
-48 V
Hard Bridging
 Yes  Yes
Station Adjunct YesYes
Secondary Lightning Protection YesYes
Same Premises—Out-of-Building
Yes  Yes
Terminals500-Type500-Type
2500-Type2500-Type
7100 Series7100 Series
Range With 500-Type/20,000
20,000
2500-Type/7102A Terminals†Feet
Feet
(24-Gauge Wire)
Range With 7101A/7103A15,200
15,200
TerminalsFeetFeet
(24-Gauge Wire)
Ringer Loads
33
Simultaneous Ports Ringing44
Ringing
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							PORT CIRCUIT PACKS
Analog Line
Circuit Packs
FeatureTN746
TN746B
TN479
Number of Ports16
1616
Neon Message
Waiting IndicatorsYes
YesYes
LED TerminalsYes Yes
Yes
Feed Voltage-24 V
-48 V
-24V
Hard Bridging
No  Yes
No
Station Adjunct
No  YesNo
Secondary Lightning
ProtectionNoYesNo
Same Premises—
Out-of-BuildingNoYesNo
Terminals
500-Type
2500-Type
7102A*500-Type
2500-Type
7100 Series500-Type
2500-Type
7100 Series
Range With 500-Type/
2500-Type/7102A Ter-
minals† (24-Gauge Wire)3,100
Feet20,000
Feet3,000
Feet
Range With 7101A/
7103A Terminals
(24-Gauge Wire)Not15,200
SupportedFeetNot
Supported
Ringer Loads3
33
Simultaneous Ports
Ringing48†
4
HThe TN746 circuit pack supports the 7102A terminal, but does not support the 7101A
†or 7103A terminals.
The TN746B circuit pack allows ringing on four ports of each half of the circuit pack
(for a maximum of eight simultaneous ports ringing). A user attempting to ring one half
of the circuit pack when all four ports are busy receives the busy tone.
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							PORT CIRCUIT PACKS
Analog Line (TN2135) — non-US Installations
The TN2135 provides 16 analog line ports and ground key
detection. Each port has tip and ring signal leads. The TN2135 is
defaulted to A-law companding and allows a down-link message to
override the default and choose µ-law companding. The TN2135
has administrable ring patterns and secondary lightning protection.
Analog Line (TN2144) — non-US Installations
The TN2144 provides 16 analog line ports and ground key
detection. Each port has tip and ring signal leads. The TN2144 is
defaulted to A-law companding and allows a down-link message to
override the default and choose µ-law companding. The TN2144
has administrable ring patterns and secondary lightning protection.
Analog Line (TN2149) — non-US Installations
The TN2149 provides 16 analog line ports. Each port has tip and
ring signal leads. The TN2149 is defaulted to A-law companding
and allows a down-link message to override the default and choose
µ-law companding. The TN2149 has administrable ring patterns
and secondary lightning protection.
Announcement TN750 or TN750B
The TN750 and TN750B record and store announcements that can
be played back on demand as part of a calling feature. The TN750
can record up to four minutes and 16 seconds of announcement
time, and the TN750B can record up to eight minutes and 32
seconds of announcement time. The TN750B can record mes-
sages from on- or off-premisis voice terminals and store up to 128
recorded announcements of eight maximum minutes each.
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							PORT CIRCUIT PACKS
Auxiliary Trunk (TN417) —
non-US Installations
The TN417 provides four ports for on-premises trunk applications
such as Music-on-Hold, Loudspeaker Paging, Code Calling, and
Recorded Telephone Dictation Access. The TN417 supports Audi-
chron® announcement equipment. TN417 hardware and firmware
are identical to that in the TN763C, except that the TN417 has A-
law companding on the pulse code modulation (PCM) signal and the
TN763C has µ-law companding on the PCM signal.
Each port has the following signal leads: T, R, SZ, SZ1, S, S1.
Auxiliary Trunk (TN763B, C, and D)
The TN763B, C and D has four ports used for on-premises applica-
tions such as: music-on-hold, loudspeaker paging, code calling, and
recorded telephone dictation access. The TN763C supports
recorded announcement equipment. The TN763D can be admin-
istered to select A-law or µ-law companding. Each port has the fol-
lowing signal leads: T, R, SZ, SZ1, S, and S1.
CO Trunk Circuit Pack (TN438B) —
non-US Installations
 l
The TN438B provides eight ports for loop-start CO trunks and has
the following attributes:
lDetection of 12Khz and 50Hz periodic metering pulses
sent from the CO
lCall still held timing
Automatic guard fault detection circuitry
Each port has the following signal leads: T, R.
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