Lucent Technologies DEFINITY Enterprise Communications Server Release 8.2 System Description Manual

							DEFINITY Enterprise Communications Server Release 8.2
System Description  555-233-200  Issue 1
April 2000
Cabinets, Carriers, and Circuit Packs 
151 Circuit Packs and Related Hardware 
TN756  Tone Detector/Generator (replaced by 
TN2182B)
The TN756 is replaced by the TN2182 tone clock-tone detector and call classifier circuit 
pack.
TN758  Pooled Modem
The TN758 has 2 conversion resources ports (such as a trunk data module) for switched 
connections between digital data endpoints (data modules) and analog data endpoints 
(modems). A TN758 Circuit pack is required for each 2 conversion resources provided 
with the integrated type of modem pool. The TN758 supports µ-Law companding only.
TN760D/E  Tie Trunk
TN760D  
has 4 ports used for Type 1 or Type 5 four-wire E & M lead signaling tie 
trunks, that can be automatic, immediate-start, wink-start, and delay-dial. Each port on a 
TN760D has T, R, T1, R1, E, and M signal leads. The TN760D provides release link 
trunks required for the CAS feature and has administrable A-Law and µ-Law 
companding.
Option switches on each TN760D port can select connections to Type 1 E & M standard 
unprotected format, Type 1 E & M compatible unprotected format, Type 1 E & M 
compatible protected format, and Type 5 simplex format.
For Belgium, Czech Republic of Slovakia, the Commonwealth of Independent States, and 
the Netherlands, use vintage 11 or greater.
TN760E  circuit packs support outgoing, Multilevel Precedence and Preemption 
(MLPP).
TN762B  Hybrid Line
The TN762B has 8 ports connecting to multi-appearance hybrid analog and digital voice 
terminals. It can connect to 7300-series telephones, an MDC-9000 (cordless telephone), 
and an MDW-9000 (cordless telephone with separate base station and charging 
stations).
Each port on a TN762B has VT and VR (analog voice), CT, CR, P-, and P+ (digital 
signals that control terminals) signal leads. 
						

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DEFINITY Enterprise Communications Server Release 8.2
System Description  555-233-200  Issue 1
April 2000
TN763B/C/D  Auxiliary Trunk 
The TN763 has 4 ports. Each port has T, R, SZ, SZ1, S, and S1 signal leads. The circuit 
pack is used for on-premises applications such as music-on- hold, loudspeaker paging, 
code calling, and recorded telephone dictation access. 
TN763C  supports external recorded announcement equipment. 
TN763D  is administrable to select A-Law or µ-Law companding. 
TN765  Processor Interface (replaced by 
TN794 and TN799/TN799B)
The TN794 and TN799/TN799B replace this circuit pack, though existing circuit packs will 
work with DEFINITY ECS R8.   The R7csi does not support the TN765 circuit pack.
TN767B/C/D/E  DS1 Interface, T1 (24 
Channel)
All TN767 circuit packs provide a DSX1 level physical interface to the DS1 facility and 
require a TN464C or greater DS1 interface. The TN767 has unpolarized line out (LO) and 
line in (LI) signal lead pairs.
TN767B  and later suffix circuit packs support DS1 rate digital facility connectivity. The 
circuit packs support CO, Tie, DID, and off-premises stations (OPS) port types using the 
robbed-bit signaling protocol. These circuit packs also support ISDN-PRI connectivity in 
R7 or later. For these applications, the signaling 
D channel can connect from the TN767B 
to the TN765 processor interface by a permanent switched call over the TDM bus. 
TN767E  and later is required to communicate with CONVERSANT and for the 
enhanced maintenance capabilities of the 120A enhanced integrated channel service unit 
(ICSU) feature. 
DS1 tests include loopback tests at the DS1 board edge or the 120A (if used), bit error 
rate (BER) loopback tests at the far-end CSU, and BER 1-way DS1 facility tests. Other 
tests include loopback testing specifically designed to locate DS1 facility faults. 
						

							DEFINITY Enterprise Communications Server Release 8.2
System Description  555-233-200  Issue 1
April 2000
Cabinets, Carriers, and Circuit Packs 
153 Circuit Packs and Related Hardware 
TN768  Tone-Clock (replaced by TN2182B)
The TN768 is replaced by the TN2182B Tone Clock - tone detector and call classifier 
circuit pack. It is not necessary to replace the TN768 with the TN2182B in an upgrade. 
The TN768 is an acceptable Tone-Clock for R7 or later.
  TN769 Analog Line
The TN769 has 8 ports, each with tip and ring signal leads. The TN769 supports 
nOn- or off-premises wiring (with certified protection equipment) with either 
touch-tone or rotary dialing and with or without LED or neon message waiting 
indicators
n3 ringer loads, such as 3 voice terminals with 1 ringer load each
nUp to 4 simultaneous ports ringing
nQueue warning level lights associated with the DDC and UCD features
nRecorded announcements of the intercept treatment feature
nDictation machines of the recorded telephone dictation access feature
nPagePac paging system for the loudspeaker paging feature
nExternal alerting devices of the trunk answer any station (TAAS) feature
nModems
The TN769 does not support off premises message waiting indicators.
The TN769 provides secondary lightning protection, and supports µ-Law companding. 
Each carrier with neon message indicators requires the TN769, along with a TN755B 
neon power unit to support neon message waiting indicators. Only 1 voice terminal can 
have an LED or neon message waiting indicator.
Combined conversion of Modem Pooling requires a port on a TN754B and a port on a 
TN742, TN746B or TN769 Analog circuit pack for each combined resource that is to be 
supported. 
						

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DEFINITY Enterprise Communications Server Release 8.2
System Description  555-233-200  Issue 1
April 2000
TN771D  Maintenance/Test (all except R6 and 
later csi)
The TN771D performs maintenance functions. These functions include packet bus 
reconfiguration that allows diagnosis and correction of recoverable packet bus failures 
before the link access procedure on the D-channel (LAPD) links fail. LAPD is a link-layer 
protocol on the ISDN-BRI and ISDN-PRI data link layer (level 2). LAPD provides data 
transfer between 2 devices and error and flow control on multiple logical links. It recovers 
packet bus failures involving up to 3 malfunctioning leads (1 or 2 data or parity leads and 
1 control lead) by swapping spare leads with the malfunctioning leads.
Other maintenance functions include ISDN-PRI testing that originates and terminates 
loopback tests on ISDN facilities. It provides bit and block error rate information indicating 
ISDN facility quality.
A TN771D is required in all si- and r-model standard reliability PPNs and critical reliability 
EPNs, all standard reliability PPNs when packet endpoints (BRI and/or ASAI) are 
supported, and in all critical reliability systems when packet endpoints are supported. The 
TN771D can be used in the csi model, but is not required.
Table 38. Terminals and wiring configurations supported by the TN769 Circuit Pack
Terminal Wire Size Maximum Range 
500-Type 24 AWG (0.2 mm
2/0.5 mm) 20,000 ft. (6,096 m)
2500-Type 24 AWG (0.2 mm
2/0.5 mm) 20,000 ft. (6,096 m)
7102-Series 24 AWG (0.2 mm
2/0.5 mm) 20,000 ft. (6,096 m)
7101A-Series 24 AWG (0.2 mm
2/0.5 mm) 15,200 ft. (4,633 m)
7103A-Series 24 AWG (0.2 mm
2/0.5 mm) 15,200 ft. (4,633 m)
8100-Series 24 AWG (0.2 mm
2/0.5 mm) 10,000 (3,048 m)
9100-Series 24 AWG (0.2 mm
2/0.5 mm) 10,000 (3,048 m)
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							DEFINITY Enterprise Communications Server Release 8.2
System Description  555-233-200  Issue 1
April 2000
Cabinets, Carriers, and Circuit Packs 
155 Circuit Packs and Related Hardware 
TN772  Duplication Interface (R6 and earlier) 
for si only
The TN772 selects the active Switch Processing Element (SPE) (control complex) in high 
reliability and critical reliability R6 and some earlier systems. The TN772 also coordinates 
the interchange of SPEs.
The TN772 controls the memory shadowing function with the duplication option, 
terminates the environmental sensors, and controls the integrated battery supply and 
charging circuits. The TN772 is also responsible for selecting the active SPE, selecting 
the active tone-clock circuit pack, and providing an administration terminal interface in 
place of the processor. A second TN772 circuit pack resides in the duplicated control 
carrier/cabinet and requires a cable connection to the Duplication Interface circuit pack in 
the basic control carrier/cabinet.
TN775B/C  EPN Maintenance Board 
The TN775B/C boards are used in maintenance and monitor power failure signals in an 
EPN cabinet in R7si/r or later. These circuit packs also monitor the clock, monitor and 
control the power supplies and battery charger, and monitor air flow and high temperature 
sensors. These circuit packs provide 2 serial links to communicate with Expansion 
Interface (EI) circuit packs, and provide an RS-232 interface for connection to an 
administration terminal. Each circuit pack contains a 3-position switch to control 
emergency power transfer.
The TN775C contains a new DC to DC power converter and is used in maintenance to 
monitor the R7 or later processor in a Survivable Remote Expansion Port Network 
(SREPN) configuration.
TN776  Expansion Interface for R6 or earlier si 
The TN776 installs in the expansion interface slot in a duplicated control carrier or in an 
expansion control carrier. The TN776 connects to the TDM bus in 1 PN and is an 
interface between that PN and the TDM bus extending to another PN. The TN776 
packages the TDM control channel with Link Access Procedure on the D-Channel 
(LAPD) for transmission over the fiber link between cabinets. The TN776 provides the 
time-slot interchange between cabinets. 
A system with ASAI/BRI or with PRI signaling from the packet bus (PACCON) requires a 
TN570B/C EI circuit pack in place of a TN776 circuit pack.
Starting with R7 all new si model switches will ship with the TN570. 
						

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DEFINITY Enterprise Communications Server Release 8.2
System Description  555-233-200  Issue 1
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TN777B  Network Control (R6 and earlier) 
(replaced by TN794) for si only
The TN777B is replaced by the TN794 Network Control/Packet Interface (for R7 and 
later).
TN778 Packet Control (R6 and earlier) 
(replaced by TN794) for si only
The TN778 is replaced by the TN794 Network Control/Packet Interface.
TN780 Tone-Clock for All Models Except csi
The TN780 connects to and monitors an optional external Stratum 3 clock for digital 
frame timing. It also couples the clock output to local clocks. The TN780 supplies master 
timing to the system and produces the following tones: call progress, touch tones, 
answer-back, and trunk transmission test. It has 2 MHz, 160 kHz, and 8 kHz clocks. This 
circuit pack can transmit the system clock and tones on either TDM bus A, TDM bus B, or 
both. 
The TN780 is administrable to produce 5 tone plans (for countries outside the United 
States) other than the United States tone plan. Six tones can be customized in each plan. 
The TN780 supports µ-Law or A-Law companding.
TN786B  Processor for R4 and earlier
The TN786B contains a CPU, 4 Mb of RAM, and 7 Mb of ROM, as well as a maintenance 
processor (MTP) with 32 Kb of RAM and 64 Kb of ROM. The TN786B does not have a 
tape interface. The TN786B maintenance processor provides:
nPower management
nControl for system alarms and LEDs
nTransfers in duplicated systems
nSerial IO capability 
						

							DEFINITY Enterprise Communications Server Release 8.2
System Description  555-233-200  Issue 1
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157 Circuit Packs and Related Hardware 
TN787F/G/H/J/K  Multimedia Interface
The TN787 multimedia interface circuit pack is used in conjunction with the TN788B 
multimedia voice conditioner circuit pack to provide service circuit functionality for the 
Multimedia Call Handling (MMCH) feature. This feature provides both voice and 
multimedia data service between multimedia complexes (endpoints). Up to 6 endpoints 
can conference to a single multimedia call occurrence.
TN787F/G  provides a TDM bus interface and a DS1 adjunct cable interface. The 
TN787F/G routes the H.221 multimedia information to the DS1 interface to free more 
TDM bus timeslots. This allows the system to carry more audio, video, and data bit 
streams between multimedia complexes (endpoints).
TN787J   introduces multiple PN support.
TN788B  Multimedia Voice Conditioner
The TN788B Multimedia Voice Conditioner circuit pack is used in conjunction with the 
TN787F/G multimedia interface circuit pack to provide service circuit functionality for the 
MMCH feature. This feature provides both voice and multimedia data service between 
multimedia complexes (endpoints).
NOTE:
The TN788B vintage is µ-Law only. The TN788B vintage 2 or later is A-Law and 
µ-Law.
The TN788B is the audio processor for the Px64 multimedia conference bridge. The 
TN788B contains 8 digital signal processors; 4 for encoding and 4 for decoding. Each 
encoder/decoder pair is assigned to a Px64 endpoint to process its audio channel. 
Connection to and from the endpoint’s audio is by way of a TN787F/G multimedia 
interface port. This connection is through the TDM bus timeslots. 
Each of the 8 digital signal processors communicate with the main on-board processor 
through 8 individual Dual Port Random Access Memory (DPRAMs). No Read Only 
Memory (ROM) is available on this circuit pack; the DPRAM is used for program 
download.  
						

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TN789  Radio Controller 
The TN789 circuit pack is an interface between a DEFINITY system and 2 Wireless Fixed 
Base (WFB) radio units for the DEFINITY wireless business system R1-PWT. The TN789 
contains a main processor to handle data line circuit (DLC) and upper medium access 
(MAC) layers of firmware. The TN789 also contains 2 lower MAC processors; 1 for each 
radio interface. Each radio interface is referred to as an I2 interface.
The I2 link is the connection between the Radio Controller (RC) and the WFB. The RC 
supports up to two I2 links, each link consisting of 4 pairs of twisted-pair cable: the 
transmit pair, the receive pair, and the local power pair. The transmit pair transfers WFB 
control and frame information from the RC to the WFB. The receive pair transfers status 
and frame information from the WFB to the RC. If the RC cannot provide power to the 
WFB, a third pair (to the WFB) can supply local power. When possible, the transmit pair 
and the receive pair provide phantom power from the RC to the WFB. 
Each circuit pack includes a standard TDM bus interface from a system, 2 radio 
interfaces to 2 separate radio units, and 2 synchronization ports. In addition, 2 RS-232 
interfaces provide for a debug terminal and for setting up the wireless terminal. Provides 
an interface to Wizard II base stations (DWBS).
TN790  Processor (R6 and earlier) Also used 
for VS
The TN790 processor circuit pack is a circuit pack level replacement for the 
TN786B/CPP1 combination. The TN790 does not support a mezzanine board for 
memory expansion (no CPP1 circuit pack is used). The TN790 provides a performance 
increase over the TN786B/CPP1 combination. 
The Reduced Instruction Set Computer (RISC) processor platform runs at 40 MHz and 
includes all of the functions of the TN786B processor circuit pack as well as providing an 
operating system base more common with R7r or later. Diagnostics for the TN790 are 
enhanced over earlier systems. The TN790 is compatible with the processor interface 
circuit pack (TN765), the PACCON circuit pack (TN778), the NETCON circuit pack 
(TN777B), and the duplication interface circuit pack (TN772).
The TN790 is available in R6 and some earlier systems. The TN790 provides 16 MBytes 
of Flash PROM (programmable read only memory). The PROM is compatible with the 
NETCON Flash cards and is programmed using the +12 VDC supplied by the NETCON 
circuit pack. 
						

							DEFINITY Enterprise Communications Server Release 8.2
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April 2000
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The TN790 is factory-populated with a minimum of 16 MBytes of Dynamic Random 
Access Memory (DRAM). 
NOTE:
Existing Release 5 TN790 circuit packs with 8 or 12 MBytes of DRAM must be 
upgraded to 16 MBytes of DRAM for R7 or later.
The DRAM can be 
seen remotely by field technicians to determine the memory 
configurations at each site. The amount of DRAM can increase depending on customer 
requirements. Contact your Lucent Technologies representative.
The TN790 contains an on-board modem with a maximum speed of 9.6 kbps and 
complies with V.32 (9.6 kbps communication) and V.42 (error detection and correction) 
protocols. The TN790 can support an external modem that can take the place of the CDR 
port since CDR connections can be provided by other methods. An external modem and 
an asynchronous data unit (ADU) or data module may be required to support a system 
printer or CDR device.
TN790B (R7 or later si only)  
The TN790B is very similar to the TN790. The circuit pack is designed to handle errors 
that are associated with the EM-BUS and is required for the use of the C-LAN (TN799) 
and NetPkt (TN794) circuit packs in R7 and later. 
TN791  16-Port Analog Guest Line 
(International Offers or US and Canada 
Category B only)
The TN791 has 16 ports. Each port supports 1 voice terminal, such as 500 (rotary dial) 
and 2500 terminals (DTMF dial). LED and neon message waiting indicators are 
supported (a separate power supply is required for neon message indicators). 
The TN791 supports on-premises (in-building) wiring with either touch-tone or rotary 
dialing and with or without the LED and neon message waiting indicators. 
The TN791 supports 3 ringer loads, only 1 voice terminal can have an LED or neon 
message waiting indicator. The TN791 allows a maximum of 8 simultaneous ports 
ringing.
TN791 supports A-Law and µ-law companding and administrable timers. Secondary 
lightning protection is provided. The TN791 supports up to 8 simultaneous ports ringing.
The TN791 is compatible with the terminal configurations shown in the table below. 
						

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System Description  555-233-200  Issue 1
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TN792  Duplication Interface for TN 790B 
Processor Circuit Packs for si only
In high- and critical-reliability R7 or later si systems, duplication interfaces copy the 
contents of memory from the primary Switch Processing Element (SPE) to a standby 
SPE, so that the latter can take over immediately when the former fails. The TN792 uses 
the Enhanced M-Bus of the TN790B processor for this memory shadowing function. The 
Enhanced M-bus supports 32-bit addressing and data access (vs. 16-bit for the M-bus), 
so it transfers data faster and shadows a larger area of memory than the older bus. The 
M-bus is still supported, however, for legacy applications. The TN790B is required for all 
R7 and later si duplicated systems.
You need two TN792 circuit packs, one for the primary control carrier and one for the 
standby. You can replace TN772 duplication interfaces with TN792s, but you must 
replace them in pairs. A TN772 cannot communicate with a TN792.
A new duplex optical cable connects the TN792 circuit packs. This cable eliminates the 
additional electromagnetic emissions that would otherwise result from the doubled data 
rate on the bus. The optical cable interface to the new DUPINT is on the front faceplate of 
the circuit pack.
The TN792 is compatible with existing duplication cables. 
Table 39. Terminals and wiring configurations supported by the TN791 Circuit Pack
Terminal Wire Size Maximum Range 
500-Type 24 AWG (0.2 mm
2/0.5 mm) 20,000 ft. (6,096 m)
2500-Type 24 AWG (0.2 mm
2/0.5 mm) 20,000 ft. (6,096 m)
6200-Type 24 AWG (0.2 mm
2/0.5 mm) 12,000 ft. (3,657m)
7100-Series 24 AWG (0.2 mm
2/0.5 mm) 20,000 ft. (6,096 m)
7101A-Series 24 AWG (0.2 mm
2/0.5 mm) 15,200 ft. (4,633 m)
7103A-Series 24 AWG (0.2 mm
2/0.5 mm) 15,200 ft. (4,633 m)
8100-Series 24 AWG (0.2 mm
2/0.5 mm) 12,000 ft. (3,657m)
9100-Series 24 AWG (0.2 mm
2/0.5 mm) 12,000 ft. (3,657m)
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