9261 A2 GN10 00

9261-A2-GN10-00 9261-A2-GN10-00

User Manual: 9261-A2-GN10-00

Open the PDF directly: View PDF PDF.
Page Count: 15

Download9261-A2-GN10-00
Open PDF In BrowserView PDF
TM

9261 Dual T1 Network Access Module (NAM)
Installation Instructions
Document Number 9261-A2-GN10-00
September 1997

Before You Begin
Make sure you have:
 An operable T1 network connection
 An async (VT100-compatible) terminal emulation
 Housing and other associated hardware
 Applicable cables

Package Checklist
Verify that your package contains the following:
 T1 NAM and associated I/O card
 Affidavit Requirements for Connection to Digital Service
 Warranty
 Safety, Regulatory, Warranty and Service Information

(Document No. 9000-A2-GX41)

Available Option
The following option is separately orderable:
 RJ48C modular cable for network access (14)

1

What Does a T1 NAM Do?
The T1 NAM acts as an interface between the T1 digital network and the customer
premises equipment, converting signals received from the DTE to bipolar signals that
can be transmitted over T1 and Fractional T1 lines. The 9261 T1 NAM also provides an
additional T1 network interface connector. Typical applications include:
H

Wide Area Networks (WANs)

H

Channel extension

H

Video teleconferencing

Cables You May Need to Order
The following cables are specifically for this product. See page A of either the
Model 916x/926x T1 Access Mux User’s Guide (Document No. 9161-A2-GB20) or the
Model 916x/926x T1 Access Mux Technical Reference (Document No. 9161-A2-GH30)
for ordering information. You can also see the Technical Reference for cable pin-out
information.

If connecting to a . . .

Order a . . .

Terminal or printer (DB25
interface/connector)

COM Port-to-Terminal/Printer cable (14)

PC (DB9 interface/connector – COM Port-to-PC cable (14)
EIA-232 connection)
DTE with a V.35
interface/connector

MS34 to DB25 adapter cable for each port: Port 1
and/or Port 2 (1′)

DTE with a RS-449
interface/connector

DB37 to DB25 DTE adapter cable for each port:
Port 1 and/or Port 2 (1′)

DTE with a V.11/X.21
interface/connector

DB15 to DB25 adapter cable for each port: Port 1
and/or Port 2 (1′)

LAN Adapter

COM Port-to-LAN Adapter cable (14)

2

Recommended Order of Installation
1. First, install the I/O card.
2. Connect all cables into the I/O card.
3. Install the NAM.
4. Go to the 2-Slot Housing Installation Instructions (Document No. 9000-A2-GN15),
5-Slot Housing with AC Power Supply Installation Instructions (Document
No. 9000-A2-GN16), or 5-Slot Housing with DC Power Supply Installation
Instructions (Document No. 9000-A2-GN1C) for power-up verification procedures.

Tools Required
H

A small Phillips screwdriver (#1 or #2) to install the T1 NAM

H

A small, flat-blade screwdriver to install the:
— I/O card
— Cable connections

3

Installing the I/O Card

NAM
Rear Panel

The NAM’s I/O card provides the COM port, network, and
DTE connections. The I/O card inserts directly behind the NAM
that it supports. Slot numbers are identical (in this case, Slot 01)
to facilitate correct installation.

92
61
NE

T

1. Remove the I/O card from the shipping box. Handle only
by the top and bottom edges to avoid damaging the card.
2. At the rear of the housing, align the I/O card with the
upper and lower tracks of the slot. Push gently towards
the midplane until it stops and you cannot push the card
any further.

1

NET 1
DB
M

DBM

NE

T

2

(For
Future
Use)

NET 2
5-Slot

PO
RT

2-Slot

1

Port 1
PO
RT

2

Port 2

Screws
Screws
Rear View

496-15155

3. There are two captive screws on the I/O card. Using a
screwdriver, alternately tighten each screw until the
screws are all the way in.

4

CO
M

COM

97-15637

Connecting to the Network
92
61

1. Insert the 8-pin connector on the
RJ48C network cable into the NET 1
and/or NET 2 interface.

NE
T

RJ48C
Jack

NET 1
DB
M

2. Insert the other end of the cable into
the RJ48C modular jack.

NE

T

2

97-15638

Connecting to a DTE
If the DTE cable type is
V.35, RS449, or V.11/X.21
(separately orderable):

92
61
NE

T

1. Connect the plug to the
V.35, RS449, or V.11/X.21
end of the adapter
cable (as appropriate).
2. Connect the EIA 530A
end of the adapter cable
to PORT 1 or PORT 2.

DTE

DB
M

V.35, RS-449,
V.11/X.21
Adapter Cable

DTE
Cable

1

NE

T

Po
r

2

t1

Port 1
If the DTE cable type is
EIA 530A:

PO
RT

DTE

1. Connect the EIA-530A
end of the DTE cable to
PORT 1 or PORT 2.

2

Port 2

DTE
Cable

CO
M

97 -15639

5

Connecting the COM Port to a User Interface
1. Insert the 8-pin end of the cable into the COM port.
2. Insert the other end of the cable into the user interface (VT100-compatible terminal
emulation) connector.
3. Press Return on the keyboard to display the Main Menu. If you need to configure
for other than a direct link, see the Technical Reference.

COM Port-to-Terminal/Printer
Cable or
COM Port-to-PC Cable

COM

PO
RT

*

2

CO
M

496-15052-01

* Set the speed of the async (VT100-compatible) terminal so
it matches the NAM's factory-loaded data rate of 19.2 kbps,
character length set to 8, parity set to None, and stop bits
set to 1. The flow control should be set to None or
Hardware.

6

Installing the T1 NAM
! WARNING:
Do NOT remove any jumpers located on the battery. To do so can cause
non-volatile memory loss. Should a jumper become separated from the
battery, contact your service representative immediately.

! HANDLING PRECAUTIONS FOR STATIC-SENSITIVE DEVICES
This product is designed to protect sensitive
components from damage due to electrostatic
discharge (ESD) during normal operation. When
performing installation procedures, however,
take proper static control precautions to prevent
damage to equipment. If you are not sure of the
proper static control precautions, contact your
nearest sales or service representative.

496-15149

The NAM is always installed in Slot 01.

CAUTION:
Be sure that you install the NAM in the correct slot so that it mates with its
matching I/O card. Otherwise, you could damage your card.
1. Remove the housing’s bezel, if applicable. See the housing installation instructions
for information.
2. Remove the NAM from the shipping box. Handle only by the top and bottom edges
to avoid damaging the card.
3. At the front of the housing, align the NAM with the upper and lower tracks of
Slot 01.

5-Slot

2-Slot

Ejector
Latches

Ejector
Latches

97-15156-01

Front View
7

4. Slide into the tracks until the NAM seats with the midplane connectors. Be careful
not to force the card or bend any pins.
5. Close both the upper and lower ejector latches on the housing to lock in place,
then tighten the captive screws on the ejector latches.
6. Replace the housing’s bezel, if applicable.

Removing/Replacing a Card
Card removal procedures differ, depending on whether you are removing the card from
the front or rear of the housing.

If you are removing the . . .

Then go to . . .

NAM

Removing/Replacing the NAM.

I/O card

Removing/Replacing the I/O Card.

Removing/Replacing the NAM
1. Remove the housing’s bezel, if applicable. See the housing installation instructions
for information.
2. Remove the captive screws from the ejector latches on front of the housing.
3. Press open the ejector latches to disengage the card.
4. Supporting the card by its edges, pull straight out until the card clears the housing.
5. Align the replacement card with the upper and lower tracks of the slot. Slide
forward until the NAM seats. Be careful not to force or bend any pins.
6. Close both the upper and lower ejector latches on the housing to lock in place,
then tighten the captive screws.
7. Replace the housing’s bezel, if applicable.

8

Removing/Replacing the I/O Card
1. Remove the NAM from the housing (see Removing/Replacing the NAM ).
2. Remove the network, DTE, and COM port cables from the I/O card (if applicable).
3. Using a screwdriver, loosen the upper and lower screws fastening the card to the
housing’s frame.
4. Gently pull the I/O card away from the midplane until it clears the housing.
5. Align the replacement card with the upper and lower tracks of the slot. Push gently
towards the midplane until it stops and you cannot push the card any further.
6. Alternately tighten each captive screw until the screws are all the way in.
7. Reattach the cables as appropriate.

Power-Up
Go to your housing instructions to perform power-up, if needed. The housing
instructions also contain troubleshooting information.

9

Front Panel LEDs and Test Jacks
The T1 NAM has 12 LED (light-emitting diode) status indicators and four sets of test
jacks.

Test Jacks
The NAM contains four sets of test jacks. Use these for:

IN

NET1

OU
T
IN

NET2

OU
T

NET1 MON NET2 MON

IN

Test
Jacks

OU
T

H

Accessing and testing towards the Network 1 interface

H

Accessing and testing towards the Network 2 interface

Refer to Troubleshooting and Maintenance in the Technical
Reference for more information on the test jacks.

General Status LEDs

IN

Label Indication

OU
T

OK

9261

OK
AL
M

Color

Power and Green
Operational
Status

TS
T

SIG

NET 1

OO
F

LEDs

CYCLING – The unit is in
Minimum mode.
Requires an FTP
download.

SIG

NET 2

OO
F
AL
M

PORT

1–
OK
2–
OK

ON – NAM has power
and is
operational.
OFF – NAM is in a
power-up
self-test, or there
is a failure.

BK
P

AL
M

What It Means

ALM

System
Failure/
Self-Test

Red

97-15647

ON – NAM has just
been reset, or an
error or fault has
been detected.
OFF – No failures have
been detected.

TST

Test Mode

Yellow

ON – Loopback or test
pattern in
progress,
initiated locally,
remotely, or from
the network.
OFF – No tests are
active.

BKP

Backup

10

Yellow

Not supported. Remains
off except during a Lamp
Test.

Network 1 and Network 2 Interface LEDs
Label

Indication

Color

What It Means

SIG

Signal

Green

ON – A recoverable signal is present on
the Network 1/Network 2 interface.
OFF – The signal cannot be recovered
from the Network 1/Network 2
interface. An LOS condition exists.

OOF

Out of Frame

Yellow

ON – At least one OOF was detected
during the sampling period.
OFF – No OOFs were detected during the
sampling period.

ALM

Alarm

Yellow

ON – An alarm condition is present on the
Network 1/Network 2 interface.
Current alarm conditions:
H Loss of Signal ( LOS )
H Loss of Frame (LOF)
H Excessive Error Rate (EER)
H Yellow Alarm
H Alarm Indication Signal (AIS)

OFF – No alarm condition is present on
the Network 1/Network 2 interface.

Port 1 and Port 2 LEDs
Label

Indication

Color

What It Means

1-OK
2-OK

Operational
Status

Green

ON – The interchange circuits for the port
are in the correct state to transmit
and receive data.
OFF – The port is idle. Occurs if the port is
disabled, if an EDL Out of Frame or
EER condition is present, if a DCLB
is active, or if the port is configured
to monitor DTR and/or RTS and the
lead(s) is not asserted.

11

Troubleshooting
Symptom

Possible Cause

Solutions

No power, or none of the
system LEDs are lit.

For DC power source, DC
power is not present.

Check the DC power
source.

For AC power source, the
wall receptacle has no
power, or the housing’s
power cord is not securely
plugged into the wall
receptacle or the back of
the housing.

1. Check the wall
receptacle power by
plugging in some
equipment that is known
to be working.
2. Check that the power
cord is securely attached
at both ends.
3. Check the circuit
breaker.

Power-Up Self-Test fails.
Only Alarm LED is on
after power-up.

LED is burned out.

Run the Lamp Test. If the
LED in question does not
flash with the other LEDs,
then contact your service
representative.

The NAM has detected an
internal hardware failure.

1. Reset the NAM and try
again (see the User’s
Guide).
2. Contact your service
representative.

Cannot access the NAM
or the user interface.

Login or password is
1. Reset the NAM (see the
User’s Guide).
incorrect, COM port is
misconfigured, or the NAM
is otherwise configured so it 2. Contact your service
representative.
prevents access.

Device Fail appears on
the System Health and
Status screen.

The NAM detects an
internal hardware failure.

Record the 8-digit code
from the System Health
and Status screen, then
contact your service
representative.

Not receiving data at
DTE interface.

Not cross-connected to the
correct timeslot(s).

Verify cross connections
using the Cross Connect
configuration option.

12

Technical Specifications
Specification

Criteria

Weight
T1 NAM
T1 I/O card

1 lb. 2 oz. (.51 kg)
6 oz. (.17 kg)

Size
T1 NAM
T1 I/O card

11.58″ x 8.00″ (29.41 cm x 20.32 cm)
2.90″ x 10.15″ (7.37 cm x 25.78 cm)

Power Consumption

9.4 watts, 0.78 amps input current at 12 volts

Physical Environment
Operating temperature

35° F to 122° F ( 1.7° C to 50° C )

Storage temperature

– 4° F to 158° F (– 20° C to 70° C )

Relative humidity

5% to 85% ( noncondensing )

Shock and vibration

Withstands normal shipping and handling

Network 1/2 T1 Interface
Physical Interface (USA)
Physical Interface (Canada)
Framing Format
Coding Format
Line Build-Out (LBO)
ANSI PRM
Bit Stuffing
Yellow Alarm Generation

RJ48C
CA81A using adapter cable
D4, ESF
AMI, B8ZS
0.0 dB, –7.5 dB, –15 dB, –22.5 dB
Selectable
FCC Part 68, AT&T TR 62411
Selectable

DTE Ports/Interfaces
Standards
Rates

EIA 530A, V.35, RS-449, V.11, X.21
Nx64 – 64K to 1.536 Mb
Nx56 – 56K to 1.344 Mb

COM Port/Interface
Data Rates

9.6, 14.4, 19.2, 28.8, 38.4 , 57.6, and 115.2 kbps
57.6 or 115.2 kbps are recommended for FTP
download only

DBM (Backup) connector
(reserved for future use)

One 8-position modular keyed USOC RJ45 jack

13

Specification

Criteria

Clocking Sources

T1 network interface (1 or 2), any port, internal
clock, or external clock

Loopbacks
Standard
Additional

Network Line Loopback, Network Payload
Loopback, V.54 Loop 2 (DCLB) and V.54 Loop 3
(DTPLB)
Network Repeater Loopback, DTE Loopback

Pin Assignments
NET 1/2 Ports/Interfaces
Function

Circuit

Pin #

Receive ring from the network

R1

1

Receive tip from the network

T1

2

Transmit ring to the network

R

4

Transmit tip to the network

T

5

Signal

Direction

Pin #

DCE Transmit Clock ( TXC )

Out

1

DCE Receive Data ( RXD )

Out

2

Signal Ground ( SG )

—

3

DCE Transmit Data ( TXD )

In

4

DCE Data Terminal Ready ( DTR )

In

5

DCE Carrier Detect ( CD )

Out

6

DCE Request to Send ( RTS )

In

7

DCE Receive Clock ( RXC )

Out

8

COM Port/Interface

14

DTE Ports/Interfaces
Signal

Circuit
ITU/
Mnemonic CCITT #

Direction

25-Pin
Pin #

Shield

—

—

—

1

Transmitted Data ( TXD )

BA

103

To DCE

2 (A)
14 (B)

Received Data ( RXD )

BB

104

From DCE

3 (A)
16 (B)

Request to Send ( RTS )

CA

105

To DCE

4 (A)
19 (B)

Clear to Send ( CTS )

CB

106

From DCE

5 (A)
13 (B)

Data Set (or DCE ) Ready
( DSR )

CC

107

From DCE

6

Signal Ground/Common ( SG )

AB

102A

—

7

Received Line Signal Detector CF
( RLSD or LSD )

109

From DCE

8 (A)
10 (B)

Transmit Signal Element
Timing (TXC – DTE Source)

DA

113

To DCE

11 (B)
24 (A)

Transmitter Signal Element
Timing ( TXC – DCE Source)

DB

114

From DCE

12 (B)
15 (A)

Receiver Signal Element
Timing ( RXC – DCE Source )

DD

115

From DCE

17 (A)
9 (B)

Local Loopback ( LL )

LL

141

To DCE

18

Data Terminal (or DTE )
Ready ( DTR )

CD

108/1, /2

To DCE

20

Remote Loopback ( RL )

RL

140

To DCE

21

Signal Common

AC

102B

—

22, 23

Test Mode Indicator ( TM )

TM

142

From DCE

25

15



Source Exif Data:
File Type                       : PDF
File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.2
Linearized                      : Yes
Encryption                      : Standard V1.2 (40-bit)
User Access                     : Print, Copy, Fill forms, Extract, Assemble, Print high-res
Create Date                     : 1997:09:10 09:40:38
Producer                        : Acrobat Distiller 2.1 for Windows
Modify Date                     : 1997:09:10 14:17:39
Page Count                      : 15
Page Mode                       : UseOutlines
EXIF Metadata provided by EXIF.tools

Navigation menu