What is TN? 1

[vagnerblitz]

Who knows what the meaning of the initials TN on boards of Avaya?

 

[PBXTech]

shamelessly taken from another user board....

T indicates 200 pin I/O (U would be 300 pin)
N is the board outline (~8 x 13 in.)

 

[phoneguy55]

someone once told me that it was Tall and Narrow for TN. Not sure if that is correct, but it sounds good.

 

[AvayaTier3]

Circuit Packs

This section lists all circuit packs alphanumerically and by code. Each circuit
pack is described briefly, and its input/output pin signals appearing on the
carrier connectors are listed.
The circuit packs contain solid-state circuits mounted on printed wiring.
All circuit packs are 8 in. (20 cm) by 13 in. (33 cm). The following connectors
are attached to one end of a circuit pack: 200-pin connector to a TN-labeled
pack; 300-pin connector to a UN-labeled pack. Faceplates on the circuit packs
are sized to fill the width of a slot, which is typically .75 in. (1.9 cm).
A color code on each faceplate identifies the circuit type. Each faceplate has
has a standard pattern of three colored light-emitting diodes (LEDs) that
indicate different circuit pack conditions:

- Red, which indicates a fault condition
- Green, which indicates a test condition
- Yellow, which indicates a busy condition

A special grounding latch on each pack protects it from electrostatic dischargeduring installation.

Types of Circuit Packs

Four types of circuit packs can be installed in carriers:
- Port circuit packs, which provide links between analog and digital lines,
trunks, networks, and external communications equipment, and the system's
TDM bus and packet bus. These circuit packs can be installed in any port
slot.
- Control circuit packs, which include processor, memory, network control,
disk control, tape control, protocol interfaces, and maintenance. These
circuit packs are installed in dedicated slots in the control carrier and do
not work in any other slots, including port slots.
- Service circuit packs, which produce and detect tones, synthesize speech,
classify calls, record announcements, and allow the system to be accessed
for administration and troubleshooting. These circuit packs are installed
in service slots in G3r only, or any port slot in G1, G3i.
- Power unit circuit packs, which supply DC voltages to the port, control,
and maintenance circuit packs in the carriers and single-carrier cabinets.
These required circuit packs are installed in indicated white slots in all
carriers and single-carrier cabinets.

A great teacher, does not provide answers, but methods to teach others "How and where to find the answers"

bsh

35 years Bell, AT&T, Lucent, Avaya
Tier 3 for 25 years and counting

http://bshtele.com

 

[mikeydidit]

Very nice Brett.

When is the last time you helped someone, just because you were able to?

For the best response to a question, read faq690-6594