Figure 3. T400 Tri-C Pin Assignments; Table 1. Sw1 Option Settings - ADTRAN Total Reach T400 TRI-C Installation And Maintenance Manual

Table 1. SW1 Option Settings

S w i c t h L a b l e
S W 1 1 - C T O N E O N
O F
S W 1 2 - T E S T O N
O F
Connections
The TRI-C is a single T400 mount circuit card that
operates from the -48 or -72 VDC provided by the
shelf. All signal connections are made through the
card edge connector interface to the T400 backplane.
The card pin assignments are illustrated in Figure 3.
The use of a T400/MFT adapter provides the
mechanical and electrical interfaces required for
proper operation of the TRI-C in the MFT mounting.
The T400/MFT adapters are available in either a
custom-wired or an unwired model and can be
obtained from multiple suppliers. The unwired version
requires wire-wrapping to interconnect the T400
56-pin connector to the MFT 40-pin connector.
Table 2 defines the TRI-C pinout for both T400 and
HR12 Shelves. Table 3 shows the recommended MFT
interconnect wiring option for a T400 TRI-C. Table 4
shows the pin assignments for the Westel 9407-00
NCTE/MFT Adapter.
55 Tip, TRI-interface
49 Ring, TRI-interface
47 Ring, U-interface
41 Tip, U-interface
35
-VDC Supply
27 Frame Ground
17 -VDC Return
11 Frame Ground

Figure 3. T400 TRI-C Pin Assignments

61212082L1-5C
D e s c i r t p o i n
E a n l b s e o c t n n i u o s u
p r e o i d c i w a e k u - p o t n
o t t e h S I D N s w t i h c r o
L U L T d v e c i . e W a e k
o t n s e a e r e r e p t a d e t a
e s o c n d i t n r e a v . s l
F D f e u a t l n a d n r o m l a
o c n d t i o i , n n i t a h t t e h
T R - I C s n e s d o e n w k a
u p o t e n o n p o w r e u - p
o l n . y
U s d e o f f r c a o t y r e t t s
o l n . y
F D f e u a t l n a d o p r e t a o i n
m o d . e
To Customer
To ISDN Switch
Section 61212082L1-5, Issue 3
-130 VDC may be present on the TRI-C tip
and ring.
s e
Using Figure 3 and the T400 shelf documentation,
u - p
connect the U-interface and the TRI-interface to the
1 7
appropriate cross-connect. These connections are not
sensitive to Tip/Ring reversal.
- e
Frame ground must be connected to provide
lightning and power cross protection for the
TRI-C.
l a
To install the T400 TRI-C, grasp the unit by the
faceplate and insert it into a shelf slot. Push the T400
TRI-C into the backplane connector until firmly
seated. After the TRI-C is installed or powered on,
faceplate LEDs will initially blink and then stabilize
with the OFFICE I/F and TRI I/F LEDs ON. Table 5
describes the four front panel status LEDs.
Following powerup, the TRI-C provides -130 VDC
maximum span power to the TRI-R and sends one
wake-up tone toward the ISDN switch or LULT
interface, SW1-1 OFF. Once synchronization is
achieved over the U-interface, the OFFICE I/F LED
will go Off. The receipt of Near End Block Errors
(NEBEs) on the U-interface will be indicated by a
once per second flash on the OFFICE I/F LED.
If the TRI-R has been installed, training will begin on
the TRI-interface. Upon synchronization of the
TRI-interface, the TRI I/F LED will go Off. The
receipt of NEBEs on the TRI-interface will be
indicated by a once per second flash on the TRI I/F
LED.
The OFFICE I/F and TRI I/F LEDs may flash briefly
upon synchronization at either interface, but should
then go out. When synchronization to each interface is
achieved, the associated LED provides an indication
of the error performance on that interface. If either
LED continues to flash intermittently, this indicates a
possible error condition on the associated interface
which should be checked before concluding circuit
turn-up.
Once all connections are made and synchronization is
complete, the TRI-C indicates activation using the
WARNING
WARNING
3