Verilink 1051-2 Chassis (CG) Configuration/Installation Guide - Manual (Page 2)

T1
NET
1
T1
NET
2
T1
NET
3
T1
NET
4
T1
NET
5
T1
NET
6
T1
NET
7
T1
NET
8
T1
NET
9
T1
NET
12
ENET
T1
NET
10
T1
NET
11
1 2 3 4 5
1 2 3 4 5 6
2.4 AMPS
HIGH
SPEED
DTE
12
HIGH
SPEED
DTE
11
TB2 -
HIGH
SPEED
DTE
10
HIGH
SPEED
DTE
9
HIGH
SPEED
DTE
8
HIGH
SPEED
DTE
7
HIGH
SPEED
DTE
6
HIGH
SPEED
DTE
5
HIGH
SPEED
DTE
4
HIGH
SPEED
DTE
3
HIGH
SPEED
DTE
2
HIGH
SPEED
DTE
1
T1
NET
7
T1
NET
8
T1
NET
9
T1
NET
12
T1
NET
10
T1
NET
11
T1
NET
1
T1
NET
2
T1
NET
3
T1
NET
4
T1
NET
5
T1
NET
6
NMS A & NMS B, IN AND OUT, ARE NON-TELECOM (T1) CONNECTORS
Les portes d'entree/sortie NMS A & NMS B sont des connecteurs non-telecommunication (T1)
( A )
NMS
OUT
( A )
NMS
IN
( B )
NMS
OUT ( B )
NMS
IN
TB1
1 - EXT CLK
2 - EXT CLK
3 - ALARM RING 4 - ALARM TIP
5 - SIG GND 1 - +48V RTN ( B )
2 - FRAME GND
3 - -48V IN ( B ) 4 - -48V IN ( A )
5 - SIG GND
6 - +48V RTN ( A )
TB2
TB1 - TB2
NMS Connections
The NMS ports are used to connect the chas-
sis into the 8100A Site Controller. Within the
chassis, each unit is physically connected to
the next unit in a daisy chain. Two 6-pin
modular connectors are provided for both the
A and B sides.
All units in the
chain must use
the same NMS
bit rate, how-
ever, each unit
in the NMS
chain must
have a unique
address.
Network and DTE
Connections
The T1 DTE
and T1 NET
ports are 8-
pin modular
jacks. The
maximum
suggested
cable lengths
for chassis
connection
to the net-
work are listed in the following table. These
distances are based on a temperature of 70°F,
0.083
µ
F/mile capacitance, a 27 dB loss, and
a 100
Ω
, non-loaded, twisted pair cable.
Alarm Connections
Alarm conditions from all modules in the
chassis are bused together in parallel and are
presented on a single set of alarm relay con-
tacts (TB1, pins 3 and 4) allowing connection
to a remote indicating device. All modules in
a common chassis must operate in the nor-
mally open (NO) mode.
Connections to the contacts should use 20-
gauge stranded wire (or similar). The contacts
are rated at 120 mA (AC or DC).
Pin NMS In NMS Out
1 Not Used Not Used
2 Signal Gnd Signal Gnd
3 Data Out Data Out
4 Data In Not Used
5 Signal Gnd Signal Gnd
6 Not Used Not Used
Pin T1 DTE T1 NET
1 Data Out Data In
2 Data Out Data In
3 Not Used Not Used
4 Data In Data Out
5 Data In Data Out
6 Not Used Not Used
7, 8 Signal Gnd Signal Gnd
Cable Type Loss per 1000' Max Length
26-gauge 6.8 dB 3,900 ft
24-gauge 5.4 dB 5,000 ft
22-gauge 4.2 dB 6,400 ft
19-gauge 3.0 dB 9,000 ft
External Clock
Connections
TB1 provides the contacts allowing connec-
tion to an external timing source (pins 1
and 2).
High-Speed DTE
Connections
The high-speed port connections use a
female 25- pin subminiature DB-25 connec-
tor. The pin interface comparisons are de-
tailed in the table on the right.
If the unit is connected to an EIA-530 DTE
type device, only a one-to- one DB-25 cable
is required.
If the unit is connected to an RS-449 com-
patible interface, an adapter cable must be
used to match the 37-pin RS-449 standard.
The V.35 option also requires an appropriate
adapter cable to connect to devices that use
the standard 34-pin V.35 interface.
Common Name DB-25 EIA-530 RS-449 V.35
Frame Ground 1 1 1 A
Signal Ground 7 7 19 B
Transmit Data (A) 2 2 4 P
Transmit Data (B) 14 14 22 S
Receive Data (A) 3 3 6 R
Receive Data (B) 16 16 24 T
Request to Send (A) 4 4 7 C
Request to Send (B) 19 19 25
Clear to Send (A) 5 5 9 D
Clear to Send (B) 13 13 27
Data Set Ready (A) 6 6 11 E
Data Set Ready (B) 22 22 29
Data Term Ready (A) 20 20 12 H
Data Term Ready (B) 23 23 30
Data Carrier Detect (A) 8 8 13 F
Data Carrier Detect (B) 10 10 31
Transmit Clock (A) 15 15 5 Y
Transmit Clock (B) 12 12 23 AA
Receive Clock (A) 17 17 8 V
Receive Clock (B) 9 9 26 X
Terminal Timing (A) 24 24 17 U
Terminal Timing (B) 11 11 35 W
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