IMC Networks IE-IMCV-T1-MUX-4 User Manual

IE-iMcV-T1-Mux/4 + Ethernet

Operation Manual

FCC Radio Frequency Interference Statement

This equipment has been tested and found to comply with the limits for a Class A computing device, pursuant to Part 15 of the FCC Rules.

These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial

environment. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the

instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to

cause harmful interference in which the user will be required to correct the interference at his own expense.

Any changes or modifications not expressly approved by the manufacturer could void the user’s authority to operate the equipment.

The use of non-shielded I/O cables may not guarantee compliance with FCC RFI limits. This digital apparatus does not exceed the Class A

limits for radio noise emission from digital apparatus set out in the Radio Interference Regulation of the Canadian Department of

Communications.

Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites applicables aux appareils numériques de classe A

prescrites dans le Règlement sur le brouillage radioélectrique publié par le ministère des Communications du Canada.

Warranty

IMC Networks warrants to the original end-user purchaser that this product, EXCLUSIVE OF SOFTWARE, shall be free
from defects in materials and workmanship under normal and proper use in accordance with IMC Networks' instructions
and directions for a period of six (6) years after the original date of purchase. This warranty is subject to the limitations set
forth below.

At its option, IMC Networks will repair or replace at no charge the product which proves to be defective within such
warranty period. This limited warranty shall not apply if the IMC Networks product has been damaged by unreasonable
use, accident, negligence, service or modification by anyone other than an authorized IMC Networks Service Technician
or by any other causes unrelated to defective materials or workmanship. Any replaced or repaired products or parts carry
a ninety (90) day warranty or the remainder of the initial warranty period, whichever is longer.

To receive in-warranty service, the defective product must be received at IMC Networks no later than the end of the
warranty period. The product must be accompanied by proof of purchase, satisfactory to IMC Networks, denoting
product serial number and purchase date, a written description of the defect and a Return Merchandise Authorization
(RMA) number issued by IMC Networks. No products will be accepted by IMC Networks which do not have an RMA
number. For an RMA number, contact IMC Networks at PHONE: [phone] (in the U.S and Canada) or (949) 465­3000 or FAX: [phone]. The end-user shall return the defective product to IMC Networks, freight, customs and
handling charges prepaid. End-user agrees to accept all liability for loss of or damages to the returned product during
shipment. IMC Networks shall repair or replace the returned product, at its option, and return the repaired or new
product to the end-user, freight prepaid, via method to be determined by IMC Networks. IMC Networks shall not be
liable for any costs of procurement of substitute goods, loss of profits, or any incidental, consequential, and/or special
damages of any kind resulting from a breach of any applicable express or implied warranty, breach of any obligation
arising from breach of warranty, or otherwise with respect to the manufacture and sale of any IMC Networks product,
whether or not IMC Networks has been advised of the possibility of such loss or damage.

EXCEPT FOR THE EXPRESS WARRANTY SET FORTH ABOVE, IMC NETWORKS MAKES NO OTHER WARRANTIES,
WHETHER EXPRESS OR IMPLIED, WITH RESPECT TO THIS IMC NETWORKS PRODUCT, INCLUDING WITHOUT
LIMITATION ANY SOFTWARE ASSOCIATED OR INCLUDED. IMC NETWORKS SHALL DISREGARD AND NOT BE
BOUND BY ANY REPRESENTATIONS OR WARRANTIES MADE BY ANY OTHER PERSON, INCLUDING EMPLOYEES,
DISTRIBUTORS, RESELLERS OR DEALERS OF IMC NETWORKS, WHICH ARE

INCONSISTENT WITH THE WARRANTY SET FORTH ABOVE. ALL IMPLIED WARRANTIES INCLUDING THOSE OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY LIMITED TO THE DURATION OF THE
EXPRESS WARRANTY STATED ABOVE.

Every reasonable effort has been made to ensure that IMC Networks product manuals and promotional materials
accurately describe IMC Networks product specifications and capabilities at the time of publication. However, because of
ongoing improvements and updating of IMC Networks products, IMC Networks cannot guarantee the accuracy of printed
materials after the date of publication and disclaims liability for changes, errors or omissions.

Table of Contents

FCC Radio Frequency Interference Statement -------------------------------------------------- i
Warranty ------------------------------------------------------------------------------------------------ i
About the IE-iMcV-T1-Mux/4 + Ethernet------------------------------------------------------- 1
Configuration Control ------------------------------------------------------------------------------- 3
LED Operation ---------------------------------------------------------------------------------------- 7

10/100BaseT Connector --------------------------------------------------------------------- 7
T1 RJ-48 Connectors-------------------------------------------------------------------------- 7
SFP Ports----------------------------------------------------------------------------------------- 8

DIP Switch Assignments----------------------------------------------------------------------------- 9

DIP Switch Assignments---------------------------------------------------------------------- 9
Installation Instructions -----------------------------------------------------------------------------10
Configuration Options------------------------------------------------------------------------------11

Ethernet Port---------------------------------------------------------------------------------- 11

Packet Size ------------------------------------------------------------------------------------ 11

Auto Negotiation----------------------------------------------------------------------------- 11

Forcing the Speed, Duplex Mode, and Flow Control-------------------------------- 11

Bandwidth Control -------------------------------------------------------------------------- 11

FX LinkLoss and

FX LinkLoss (FXLL) --------------------------------------------------------------------------- 11

Fiber Fault Loopback (FFL) ---------------------------------------------------------------- 12

T1 Ports ---------------------------------------------------------------------------------------- 12

Alarm Level ----------------------------------------------------------------------------------- 12

Alarm Conditions ---------------------------------------------------------------------------- 12

Loopback -------------------------------------------------------------------------------------- 13
Console Screens -------------------------------------------------------------------------------------14

Login Screen ------------------------------------------------------------------------------------- 14
Main Menu--------------------------------------------------------------------------------------- 15
Unit Configuration Screen -------------------------------------------------------------------- 15
Port Alarm Status Screen ---------------------------------------------------------------------- 16

SFP

Line Status Screen ------------------------------------------------------------------------- 17
Ethernet Port Configuration Screen --------------------------------------------------------- 17
Ethernet Port Status Screen ------------------------------------------------------------------- 18
T1 Port Configuration Screen----------------------------------------------------------------- 18

Host T1 Port Setup Screen----------------------------------------------------------------- 19
T1 Port Status Screen--------------------------------------------------------------------------- 19
Fiber Optic Port Verification------------------------------------------------------------------ 20
T1 Port Verification ----------------------------------------------------------------------------- 21

10/100BaseT Ethernet Mating Connector Pinout------------------------------------- 21

T1 Port Mating Connector Pinout -------------------------------------------------------- 22

RS-232 Port Mating Connector Pinout-------------------------------------------------- 22

RS-232 Serial Console Port ---------------------------------------------------------------- 23

LFPT

----------------------------------------------------------------------- 11

ii

Troubleshooting -------------------------------------------------------------------------------------24
Specifications -----------------------------------------------------------------------------------------25
Standards/Compliance -----------------------------------------------------------------------------25
Definition of Terms/Acronyms--------------------------------------------------------------------26
IMC Networks Technical Support----------------------------------------------------------------29
Fiber Optic Cleaning Guidelines -----------------------------------------------------------------30
Electrostatic Discharge Precautions --------------------------------------------------------------30
Safety Certifications ---------------------------------------------------------------------------------31

iii

About the IE-iMcV-T1-Mux/4 + Ethernet

Overview

The IE-iMcV-T1-Mux/4 + Ethernet is a media converter that transports four
independent T1 lines over an existing single (or dual, “1+1”) standard fiber optic line
operating at an effective rate of 155Mbps. One serial link (RS-232) and one Ethernet
(10/100BaseT) connection are also multiplexed onto the fiber link(s). Each of these
communication channels is transported end-to-end at full wire speed with very low
latency. A maximum packet size of up to 1916 bytes is supported on the Ethernet
port.

The serial link can be used for extending an independent RS-232 interface to the
remote POP location for use in managing or controlling other devices at the POP and
supports any data rate up to 120Kbps. In addition, each unit also supports an RS-232
console port for local configuration by technical support personnel. The console port
is used for end-to-end system management, fault detection/isolation and system
diagnostics.

The IE-iMcV-T1-Mux/4 + Ethernet provides fault indications on the T1 and fiber links
resulting from real-time active faults. The equipment detects both T1 and fiber LOS
events as well as degraded T1 or fiber lines. The unit will automatically forward AIS
signaling to the remote unit after detecting an

LOS

(Loss Of Signal) condition on any
incoming T1 line. Severe receive optical link failures will result in the automatic
generation of

AIS

signaling onto the T1 lines connected to the unit receiving the

corrupted optical signal.

In addition, Code Violation (CV) errors are detected on all incoming T1 lines and

BER

calculations for the optical line are constantly being performed by circuitry within the

LED

unit's optical receiver. Error conditions are displayed on the unit’s front panel
indicators and reported to system management software (if equipped) where more
detailed error information can be displayed on the user’s Graphical User Interface
(GUI).

1+1

Modules equipped with

fiber redundancy can benefit from the enhanced
reliability of a protected fiber link and the system’s ability to automatically switch to
the “best” fiber line should one line become impaired or fail. This automatic
switchover capability is designed to occur rapidly (<50 milliseconds), minimizing data
loss and system down time. In addition, automatic switchover can be overridden;
this allows the end-user to force the unit to receive on a specific optical line if desired
to support periodic maintenance.

1

The IE-iMcV-T1-Mux/4 + Ethernet offers the following features:

• Four T1 ports with RJ-48 connectors

One full bandwidth Ethernet 10/100BaseT port (specific model)

•

1+1 protection switching via two SFP-based optical ports (specific model)

•

•

DDMI supported on SFP ports
One end-to-end serial RS-232 port on an RJ-45 connector, supporting up to 120K

•

baud rate

•

Local CLI management console port on a Mini Jack connector
Remote management capability through iMediaChassis series with SNMP

•

Management

•

AIS generation on signal loss on all T1 interfaces
SNMP Alarm TRAP reporting in managed chassis

•

AutoCross for the Ethernet port

•

•

Last Gasp on remote power loss
Supports all MSA-compliant SFPs, 155mpbs

•

Link Fault Pass-Through (LFPT)

•

•

Bandwidth control, 10/100 Frc/Adv, Flow Control, FXLL

The IE-iMcV-T1-Mux/4 + Ethernet module is a dual-wide iMcV module.

Compatible chassis include the following:

• iMediaChassis series

• MediaChassis series (2 slot models )

• IE-MediaChassis series (2 slot models)

2

Product Application

r

r

The

IE-iMcV-T1-Mux/4 + Ethernet delivers 4 T1 lines to a customer's site over a
protected, dedicated fiber line. In addition, one serial RS-232 line and one
10/100BaseT Ethernet line can be carried at the same time. All configurations run at
full line rates with no interaction.

ISP Internet

TDM Network

PSTN

Local Far End

(4 port)

10/100BaseT

(1 Port)

T1

Serial Port

Console

T1-Mux

(Network)

Dedicated

Fibe

T1-Mux

(Subscriber)

Host

Dedicated

Fibe

Protection

(1+1)

Remote

10/100BaseT

(1 Port)

T1

(4 Port)

Serial Port

Console

Customer

LAN

Customer

PABX

Remote Far End

Console RS232

Managed Modules

The

IE-iMcV-T1-Mux/4 + Ethernet modules are installed as a Host/Remote pair; the
fiber connection is IMC proprietary. Host or Remote configuration is selected by an
onboard DIP Switch setting. The Host/Remote pair can be remotely managed when
the HOST is installed in an iMediaChassis with an SNMP Management Module.

Configuration Control

Some iMcV-Modules offer Configuration Control; labels on the front faceplate are
identified as such. Configuration Control has been implemented to assist the end user
by retaining the latest configuration regardless of how that configuration was
implemented (via DIP Switch settings or SNMP), when an SNMP Management
Module is present in a managed chassis.

Historically, if an SNMP Management Module was installed in a chassis, SNMP would
override the DIP Switch settings of a module. Utilizing Configuration Control, the
end user has three conditions under which the configuration of an iMcV-Module may
be impacted:

Changing or installing an SNMP Management Module into a chassis with an IE-

•

iMcV-T1-Mux/4 + Ethernet populated in a chassis

The IE-iMcV-T1-Mux/4 + Ethernet will transfer its saved configurations to

­the SNMP Management Module. If there is no SNMP Management Module,
the IE-iMcV-T1-Mux/4 + Ethernet will function based on its DIP Switch
settings. If the DIP Switches have not been changed, the stored

3

configuration on the unit will be used. The stored configuration can be
retrieved from the SNMP Management Module or the DIP Switches.

Replacing the same type of iMcV-Module

•
If the DIP Switch settings are the same as the settings on the removed IE-

­iMcV-T1-Mux/4 + Ethernet, the new IE-iMcV-T1-Mux/4 + Ethernet gets its
configuration settings from the SNMP Management Module.
If the DIP Switch settings are different, then the configuration of the module

­is determined by the DIP Switch settings. (The settings are forwarded to the
SNMP Management Module and the values are saved.)

Installing a different model of an iMcV-Module

•
If another type of module is installed into the same slot in a chassis, the

­SNMP Management Module clears the memory of the previous
configuration for that slot; the installed iMcV-Module configures itself and
its configuration is forwarded to the SNMP Management Module, where the
values are saved.

The SNMP Write Lock switch does not impact any iMcV-Module or IE-iMcV-Module
with Configuration Control. Removing and installing a new SNMP Management
Module will no longer impact these modules, either. However, if there is a mixture of
iMcV-Modules with and without Configuration Control, the Write Lock Switch and a
new SNMP Management Module must be taken into consideration.

If the command cleandb is applied to an SNMP Management Module, all the settings
for the modules will be removed, but the Configuration Control modules will still be
based on the last change made. Those without Configuration Control will be set to
their default settings.

NOTE

If the end user has a mixture of standard iMcV-Modules as well as Configuration Control
iMcV-Modules, it is important to understand how SNMP and DIP Switches will impact the
cards depending on their capability. Standard iMcV-Modules cannot be upgraded to
Configuration Control capability, so it is strongly recommended to set the DIP Switches on
the modules and then configure them via software to match the same settings.

4

1+1 Protection on the Fiber Interface mode

The fiber transport is a 1+1 protection switched transport. It provides very fast (<50
mSec) switch-to-protect timing by transmitting the same information on both fibers at
the same time. The fiber receiver then chooses the fiber to receive based on the
validity of the line. Once the selection is made, the receiver will stay on that fiber line
until it enters a fiber defect state at which time another fiber selection process is
started (non-revertive switching). Once a switch-to-protect has occurred, a hold off
time (1 second minimum) is used to prevent another switch-to-protect from occurring
too soon after a protection switch.

If protection is not enabled, SFP port A will be used by default and no alarm or defect
information will be provided for SFP port B. The LEDs associated with the backup
fiber line will only be active if protection is enabled.

When protection is enabled, error reporting for the backup fiber line is limited to the
Signal LOS condition. Signal LOS will generate an SFP Down trap.

A Remote Alarm Indication (RAI-F) signal is sent back to the fiber if the received fiber
is in BER or LOS defect condition. In this way the far end unit is alerted of a fault
condition on the local fiber line.

Serial Port Connection

10/100BaseT

Connector

RS-232

Connector

T1 RJ-48

Connectors

SFP

Ports

Console

The IE-iMcV-T1-Mux/4 + Ethernet includes a console serial port. To establish a link
between a module's console port and a local PC, connect the Mini Jack to DB9
adapter (optional accessory available through IMC Networks, part number
825-39950). This RS-232 serial connection provides access to the IE-iMcV-T1-Mux/4
+ Ethernet module

,

emulation

38.4K baud, 8 data bits, 1 stop bit, no parity

CLI

configuration screens. Set the computer/terminal for

and

no flow control

VT-100

.

Under the VT-100 emulation, set the backspace key to send delete.

5

iView² Management Software

iView² is the IMC Networks management software designed specifically for the IMC

GUI

Networks “iMcV” family of modules. It features a

and gives network managers

the ability to monitor and control the manageable IMC Networks products.

iView² is available in several versions, including WebServer version 3.0, and can also
function as a snap-in module for HP OpenView Network Node Manager and other
third party SNMP Management software. For assistance in selecting the right version
of iView² for your operating system, please visit:

http://www.imcnetworks.com/products/iview2.cfm

2

iView

supports the following platforms:

• Windows 2000

• Windows XP

• Windows Vista

• Windows 7

SNMP

Please see the

Management Module for software configuration options.

6

LED Operation

The IE-iMcV-T1-Mux/4 + Ethernet features diagnostic

10/100BaseT Connector

LNK:

• OFF when port is not linked/connected

• Glows green when link is established

• Blinks green during data activity

FDX:

• OFF when port is not connected or when running at

half-duplex

• Glows yellow when port is running at full duplex

• Blinks yellow when collisions occur

T1 RJ-48 Connectors

ALARM:

• OFF during normal operation

• Blinks red+green simultaneously

when CV errors detected on the T1
line

• Glows red+green when loss of

service (LOS) is detected, OR
continuous bit errors are detected
on the T1 line at far end of the
optical line

• Blinks red when local CV errors

detected on T1 line.

• Glows red when LOS detected on

the local T1 line, OR
when continuous errors are
detected on the local T1 line

LED

s as explained below.

STAT:

• Off if not

equipped

• Glows green

during normal
operation

• Glows

red+green when
out-of-service or
when the port is
in a loopback or
test state

• Glows red when

the Host to
Remote fiber
link(s) is down or
badly corrupted

7

SFP Ports

or

One model offers two
second model offers one

ACT:

• Glows green when the

• OFF when the

• Glows red+green when the

be the active receive line

LNK:

• Glows green when there is a valid link

• Glows red when a loss of optical signal occur,

continuous optical bit errors

RAI

:

• Off when no remote defects are detected

• Glows red+green when remote

MSA

:

• Off when no SFP is installed in the port

• Glows green when no

• Glows red+green when

at remote end

• Glows red when

detected locally, i.e., when the
speed is not at 155Mbps

SFP

(A and B) ports for

SFP

without protection.

SFP

port is the active receive line.

SFP

is not the receive line

SFP

SFP

alarms are detected

SFP

alarms or defects are detected

SFP

alarms or misconfigurations are

1+1

protection; a

port is manually forced to

LOF

, or with

LOS

or

BER

detected

SFP

is missing, or when

SFP

8

DIP Switch Assignments

DIP Switch Assignments

A single 10-position DIP Switch is located on the unit to set the configuration. The
switch positions are defined as follows:

Switch # Function Settings Factory Default

1 Host/Remote OFF = Host, ON = Remote OFF
2 Reserved OFF OFF
3 Reserved OFF OFF
4 Reserved OFF OFF
5 Reserved OFF OFF
6 Reserved OFF OFF
7 Reserved OFF OFF
8 Reserved OFF OFF
9 Reserved OFF OFF

10 Reserved OFF OFF

NOTE

Switch #1 must be set to ON at the Remote location.
Switches #2 through #10 are reserved for factory use only and must be OFF for proper
operation.

9

Installation Instructions

Each IE-iMcV-T1-Mux/4 + Ethernet module requires two slots in an iMedia Chassis
Series, MediaChassis/2 Series, or IE-MediaChassis/2 series. To install the module in a
chassis, remove the blank faceplates covering the slots where the module is to be
installed. Then slide the module into the chassis card guides until the module is
seated securely in the slots. Secure the module to the chassis by tightening the
captive screw.

All IE-iMcV-T1-Mux/4 + Ethernet units are shipped from the factory configured as

Host

units. The IE-iMcV-T1-Mux/4 + Ethernet modules must be installed in pairs.
For two IE-iMcV-T1-Mux/4 + Ethernet units to properly operate together one unit
needs to be configured as a

Remote

. Configuration as a Host or Remote is controlled

via a DIP Switch setting (S1-1).

Small Form-Factor Pluggable Ports (SFP)

The fiber link on the IE-iMcV-T1-Mux/4 + Ethernet module is supported through one
or two SFPs (depending on the model) running at 155Mbps. Many SFPs, including
those from IMC Networks, feature enhanced diagnostics capabilities Data and
Diagnostic Management Information (DDMI). DDMI statistics provide real-time
access to transceiver operating parameters such as voltage, temperature, laser bias
current, and both transmitted and received optical power. DDMI information can be

2

accessed in iView

. Any MSA-compliant SFP, 155mbps, can be installed in one or

both SFP ports (model specific).

AutoCross Feature

The 10/100BaseT Ethernet port on the IE-iMcV-T1-Mux/4 + Ethernet includes an
AutoCross feature that automatically selects between a crossover workstation and a
straight-through connection depending on the connected device.

10

Configuration Options

The following sections describe the configurable features.

From the CLI "Unit Configuration," use the "Factory Default" command to restore the
unit's default settings in the CLI, under Unit Configuration. This restores the card's
default configuration and resets the default username and password.

User: admin / Password: admin

Ethernet Port

If the Ethernet port is not used, it can be set to disabled via a console session or via
iView², to effectively block all traffic on this port.

Packet Size

The Ethernet port can accommodate packets up to 1916 bytes.

Auto Negotiation

The IE-iMcV-T1-Mux/4 + Ethernet ships from the factory with Auto Negotiation
enabled on the Ethernet port. In this mode, the port negotiates for speed, duplex
and flow control.

Forcing the Speed, Duplex Mode, and Flow Control

The Ethernet port on the IE-iMcV-T1-Mux/4 + Ethernet can be selectively advertised
or manually forced for 10 Mbps or 100 Mbps operation at Half- or Full-Duplex (i.e.,
10 Mbps Full-Duplex, 10 Mbps Half-Duplex, 100 Mbps Full-Duplex, etc.). Flow
control can also be enabled on the Ethernet port when the connecting equipment
supports this. These features can be enabled through iView²/CLI.

Bandwidth Control

The IE-iMcV-T1-Mux/4 + Ethernet includes bi-directional bandwidth control in 32
Kbps increments (configurable via iView2).

FX LinkLoss and

LFPT

During normal operation, link integrity pulses are transmitted by all point-to-point
Ethernet devices. When an IE-iMcV-T1-Mux/4 + Ethernet receives valid link pulses,
it knows that the device to which it is connected is up, and that the cable coming

LED

from that device is intact. The appropriate “LNK” (link)

is lit to indicate this.
However, these signals are not normally transmitted across a normal store and
forward Ethernet bridge function. A failed Ethernet line on one end of the fiber link is
not forwarded to the Ethernet port at the other end of the optical transport. A failed
optical line is also not normally forwarded to the Ethernet port. The FX LinkLoss and
LFPT functions are used to enable these features.

Both the LinkLoss and LFPT features are set to "Disabled" by default.

FX LinkLoss (FXLL)

FX LinkLoss is a link integrity monitoring feature that forwards fiber link faults to the
RJ-45 DATA port to indicate that a fiber link fault has occurred. FX LinkLoss can be
enabled in iView²/CLI.

11

Fiber Fault Loopback (FFL)

When a Fiber LOS is detected, the unit sends a Remote Alarm Indication) back to the
fiber in the opposite direction. The reception of fault indication on the fiber line
inhibits sending a LINK signal to the Ethernet port. This function can be enabled at
both ends of the fiber line without causing a "lock-up" condition and will
automatically clear when the fault is cleared. FFL can be configured at both ends of
the fiber line with no lock-up condition.

Last Gasp

The iMcV-FiberLinX-II includes a Last Gasp feature, which sends a trap Flinx Unit
Down for the Host unit or a Flinx Remote Unit Down for the Remote unit (as seen in
iView²) when the power to the module fails.

T1 Ports
Alarm Level

T1 lines are defined as LOST when no signal is received as defined by ITU G.775
specifications Loss Of Signal (

, and are considered in error with a

BER

of 10^-6.

LOS)

If either of these conditions lasts for more than 2.5 seconds, an ALARM state is
declared. This error condition must be absent for 10 seconds for the alarm state to
clear.

The starting and ending event of all alarm conditions will generate an

SNMP

TRAP
when the unit is installed in a managed chassis and set to the in service state. During
initial installation or normal maintenance, the end-user can place the unit in the Out­Of-Service (

OOS)

state to inhibit unwanted

SNMP

TRAP alarms.

Alarm Conditions

• Last gasp (remote lost power)

• T1 Port Up

• T1 Port LOS

• Fiber port Up / LOS

• SFP removed/installed

• Service state change

12

Loopback

Each T1 port can be tested in loopback mode by enabling either a Host loopback or
Remote loopback test path. This capability allows the end-user to help troubleshoot
and isolate system problems such as improper/broken line terminations, cables or
malfunctioning equipment.

With Host loopback, the T1 copper port, connected to the Host unit, is looped back
to that port within the local unit. T1 data coming from the remote unit to that port
over the optical link is also looped back to the remote unit at the same point within
the local unit.

With remote loopback, an T1 line connected to the Host unit is transported onto the
optical link and looped back within the remote unit back onto the optical link
without passing onto the copper T1 line of the remote unit. The remote’s incoming
T1 copper line is also looped-back to the copper line within the remote unit.

The default value for loopback is "none."

Copper

Fiber

T1

T1 Mux HOST T1 Mux REMOTE

Fiber

HOST

Loopback

Fiber

Remote

Loopback

T1

Copper

13

Console Screens

Configuration Using the Console Port

The following section describes configuration using the console screens. The Remote
module is only configured through the Host.

Login Screen

After running through an initial self test, the log-in screen is displayed (the diagnostic
information displayed below is for illustration purposes only and may differ from the
actual screen display):

The username is case sensitive with a maximum length of 16 characters. After a
username is entered, the system prompts the end-user for a password. Note that the
default user name and the default password is

Password is case sensitive with a maximum length of 16 characters. After the system
validates the username and password, the Main Menu is displayed.

admin

.

14

Main Menu

From the main menu, the end-user can view essential unit configuration data and a
clock indicating when the displayed information was last refreshed.

Menu Options

1

= Refer to the

2

= Refer to the

3

= Refer to the

4

= Refer to the

5

= Refer to the

6

= Refer to the

7

= Refer to the

8

= Logout

Unit Configuration Screen
Port Alarm Status

SFP

Line Status

screen

screen;

SFP DDMI

Ethernet Port Configuration
Ethernet Port Status
T1 Port Configuration
T1 Port Status

screen

screen

screen

alarms are also displayed

screen

NOTE

On all configuration screens, the title is the same as the "option" selected from the
previous screen.

Unit Configuration Screen

The unit configuration screen displays the names of the Host and Remote units as
well as the service state, whether fiber protection is enabled and the SFP

BER

alarm
level. In addition, the unit time can be set from this screen and the username and
password can be set/reset.

15

The screen displays the current status for items 1 through 8. For security reasons, the
current username and password are not displayed.

For items 1 through 8, enter the number of the menu item to be changed, and then
enter the new value when prompted. The unit and port names can be assigned by

SNMP

the end-user and are used in

Port Alarm Status Screen

The Port Alarm Status screen displays the status of the Host and Remote alarms on
each of the unit's ports. This screen can be refreshed as needed to display current
data.

associated TRAP alarm messages.

16

SFP

Line Status Screen

The

SFP

Line Status screen displays the status of the Host and Remote

SFP

The detailed
Displayed data includes the manufacturer name, code, part number and revision
number. These values may not be modified.

SFP

For
and optical receive/transmit, levels can be obtained through
Module.

Ethernet Port Configuration Screen

modules that support

information may be viewed by entering "1" for

DDMI

values for temperature, voltage, diode current

SFP

SNMP

SFP

links.

A or "2" for

Management

SFP

B.

The screen displays the current values for items 1 through 11 for both the Host and
Remote site.

17

Enter the number of the menu item to change its configuration, and then enter the
new value(s) when prompted.

Ethernet Port Status Screen

This screen displays the current Ethernet port status for both the Host and Remote
site.

T1 Port Configuration Screen

Use this screen to access the loopback and name details for each of the four T1 ports.

Enter the number of the menu item to edit, and enter the new value(s) when
prompted.

18

Host T1 Port Setup Screen

Enter the number of the menu item to edit, and enter the new value(s) when
prompted.

T1 Port Status Screen

Use this screen to display the current status for each of the four T1 ports for the Host
and Remote units.

19

Fiber Optic Port Verification

As a troubleshooting aid, the fiber optic ports can be verified by placing a physical

LED

loopback optical line on the ports and verify the

LED

The ACT

will arbitrarily be configured to either the A or B fiber line. The

behavior as shown:

RAI LED

is RED/GREEN indicating that there is something wrong at the far end of the fiber line
(in this case, the remote unit is missing). The ALARM LED is RED because the T1 port
is not connected. The STAT LED is RED when there is no fiber link but turns GREEN
when the fiber link is valid.

NOTE

The T1 ports are all sending

LOS

the

on the T1 port. Without the fiber looped, it is because of the

AIS

. However, with the fiber looped, it is because of

LOS

of the

fiber port.

WARNING

An optical loopback will also loop back the Ethernet port. If the network cannot
tolerate this, remove the Ethernet port connection before connecting the fiber
loopback.

20

T1 Port Verification

By placing a physical loopback connection on the T1 port, a valid signal can be
detected by each individual T1 port to verify its operation. Without the fiber looped,

LED

the ALARM

for the looped T1 port will show RED/GREEN indicating there is a
problem at the far end of the fiber transport (In this case the far end unit is missing)
and the STAT LED is RED because the fiber is in LOS. With the fiber looped, the T1
port will only show a normal GREEN STAT LED.

10/100BaseT Ethernet Mating Connector Pinout

The following table lists the pin configuration for the standard RJ-45 Ethernet
connector.

Pin Signal

1 Transmit +
2 Transmit -
3 Receive +
4 None
5 None
6 Receive -
7 None
8 None

Pin 1

NOTE

MDI/MDIX AutoCross function will automatically transpose the Transmit and
Receive lines if required.

21

T1 Port Mating Connector Pinout

The following table lists the pin configuration for the standard RJ-48 T1 port mating
connectors.

Pin Signal

1 Receive 1 (Tip in to unit)
2 Receive 2 (Ring in to unit)
3 None
4 Transmit 1 (Tip from unit)
5 Transmit 2 (Ring from unit)
6 None
7 None
8 None

Pin 1

NOTE

The pin configuration is consistent with a DTE interface.

RS-232 Port Mating Connector Pinout

The following table lists the pin configuration for the RS-232 port mating connector.

Pin Signal

1 None
2 None
3 None
4 Signal Ground
5 Receive Data (in to unit)
6 Transmit Data (out of unit)
7 None
8 None

Pin 1

This port provides an end-to-end RS-232 line that can support up to 120K Baud and
is transparent to all RS-232 protocols.

22

RS-232 Serial Console Port

The following table lists the pin configuration for the RS-232 3-pin Mini Jack mating
connector for the console serial port.

Pin DB9-F Pin# Signal Name Direction

Tip 2 Transmit Out of Unit
Ring 3 Receive In to Unit
Sleeve 5 Return Return

Tip

Sleeve

Ring

23

Troubleshooting

• All IE-iMcV-T1-Mux/4 + Ethernet units are shipped configured as Host units

via DIP Switch #1 = OFF. The Remote unit should be set to DIP Switch #1
= ON. Be sure to confirm that the iMcV-T1-Mux/4 card is set correctly
when used.

• The fiber transport is independent of all other ports and should be

established first. If this is not possible, a physical fiber loopback can be used
for fiber port verification. A fiber loopback will cause all connected ports to
loop back their respected data.

• If the fiber is not connected, all T1 ports will send the all-ones,

This can be physically looped back to verify T1 port operation.

• When a replacement module is added into the same slot of the chassis, the

SNMP managed configuration may become lost or incomplete. To avoid
this situation, wait at least two minutes between removing the old module
and inserting the new module.

AIS

signal.

24

Specifications

Power Consumption (Typical):

0.96A @ +5 VDC

Operating Temperature:

+32°F to +158°F (0°C to +70°C)

Storage Temperature:

-40°F to +158°F (-40°C to +70°C)

Humidity:

5% to 95% (non-condensing)

Dimensions:

Dual Slot iMcV module

MTU:

Maximum packet size up to 1916 bytes

Standards/Compliance

• IEEE 802.3x Flow Control

• IEEE 802.3i 10Base-T twisted pair

• IEEE 802.3u 100Base-TX twisted pair

• IEEE 802.3u 100Base-FX or SX fiber

• ITU G.703

• ITU G.775

• ITU G.824

• GR-820-CORE

25

Definition of Terms/Acronyms

The following are terms and phrases used within this manual, or which are found in
documents associated with this equipment.

1+1 The Term “1+1” refers to line protection where identical

information is transmitted on two redundant lines. The Receiver
chooses the “best” line to use based on the BER of the line.

AIS Alarm Indication Signal: Used in T1 signaling, the AIS is a

predetermined bit stream (all ones) that is transmitted (forwarded)
upon the loss of an incoming T1 signal or when the T1 signal is
disrupted.

AMI Alternate Mark Inversion: A bipolar coding scheme used to

accommodate the ones density requirements of T1 lines in such a
way that successive ones, or marks, must alternate in polarity. AMI
is an older standard, but is still used for transporting voice
transmissions.

AN

Auto Negotiation: A signaling protocol used by an Ethernet PHY to
determine the characteristics (speed, duplex mode) of its “link
partner” and configure itself automatically

B8ZS Bipolar with 8-Zero Substitution: A line code used for T1 which

converts any string of 8 zeros of a DS-1 signal into a code which at
the far end is converted back to eight zeros. B8ZS coding actually
inserts Bipolar Violations (BPVs) that are realized at the next
multiplexer point and are taken out of the signal.

BER Bit Error Rate: The percentage of bits with errors divided by the

total number of bits that have been transmitted, received or
processed over a one second time period.

CLI Command Line Interface: An interface screen, often DOS-based,

used for system management and diagnostics requiring the user to

GUI

type commands rather than use a

.

CV Code Violation: An anomaly of a decoded physical-layer signal

stream resulting in coding (signaling) error(s). Noise bursts or
intermittent connections on a link are the usual causes of code
violations; an

HDB3

coding error.

DDMI

Digital Diagnostic Monitor Interface: A defined serial interface and
data format typically used to access SFP internal information

26

FFL

Fiber Fault Loopback: When the fiber line fails, the Ethernet port
that is being forwarded over the fiber line is forced out of LINK.
Similar to the Fiber Alert function.

GUI

Graphical User Interface: Software that provides a visual interface
to enable an end-user to manage and monitor network devices.

IS In-Service stat is the normal state of an active port with normal

error reporting.

LED Light Emitting Diode: A small stack of lights to indicate link,

duplex or other options.

LFPT Link Fault Pass-Through: LFPT can be enabled via iView² or

through the console port.

LOF Loss Of Frame: An error condition where the receiver/decoder

misses detection of the framing signal.

LOS Loss Of Signal: An error condition where the receiving line

interface unit does not detect a signal.

MDI/MDIX Media-Dependent Interface/ Media-Dependent Interface

Crossover. The ability of an Ethernet port to automatically detect
and configure its cabling connections to accommodate crossover
or non-crossover wiring, depending on its link partner and cabling.

MIB Management Information Base: A database of objects that can be

monitored by a network management system. Both SNMP and
RMON use standardized MIB formats that allow any SNMP and
RMON tools to monitor any device defined by a MIB.

MSA Multi-Source Agreement (SFP): The standard an SFP must meet to

be compatible in network devices.

NOC Network Operations and Control Center

OOS Out-Of-Service, OOS is used by the CRAFT personnel to turn OFF

the alarm reporting so they can service the line without causing
alarm TRAPS to be sent to the NOC Center. The LEDs display a
line status but do not report any line related alarms back to the
NOC. A card removal or insertion is still reported, but a PORT
up/down or changes to its configuration are not.

POP

Point(s) Of Presence: The demarcation point where carrier owned
equipment is located at the customer site.

27

RAI Remote Alarm Indication: Status information received from the

line indicating there is an alarm condition at the far end of the
transport.

SFP Small Form-Factor Pluggable: An industry standard optical

pluggable module.

SNMP Simple Network Management Protocol: A set of protocols for

managing complex networks over a standards-based IP network.

28

IMC Networks Technical Support

Tel:

[phone] or [phone] (in the U.S. and Canada);

[phone] (Europe)

Fax:

E-Mail:

Web:

[phone]

[e-mail]

www.imcnetworks.com

29

Fiber Optic Cleaning Guidelines

Fiber Optic transmitters and receivers are extremely susceptible to contamination by
particles of dirt or dust, which can obstruct the optic path and cause performance
degradation. Good system performance requires clean optics and connector ferrules.

Use fiber patch cords (or connectors, as appropriate) only from a reputable

1.

supplier; low-quality components can cause many hard-to-diagnose problems in
an installation.

Dust caps are installed at IMC Networks to ensure factory-clean optical devices.

2.

These protective caps should not be removed until the moment of connecting
the fiber cable to the device. Should it be necessary to disconnect the fiber
device, reinstall the protective dust caps.

Store spare caps in a dust-free environment such as a sealed plastic bag or box

3.

so that when reinstalled they do not introduce any contamination to the optics.

4.

If it is suspected that the optics have been contaminated, alternate between
blasting with clean, dry, compressed air and flushing with methanol to remove
particles of dirt.

Electrostatic Discharge Precautions

Electrostatic discharge (ESD) can cause damage to any product, add-in modules or
stand alone units containing electronic components. Always observe the following
precautions when installing or handling these kinds of products

Do not remove unit from its protective packaging until ready to install.

1.

Wear an ESD wrist grounding strap before handling any module or component.

2.

If the wrist strap is not available, maintain grounded contact with the system unit
throughout any procedure requiring ESD protection.

Hold the units by the edges; do not touch the electronic components or gold

3.

connectors.

After removal, always place the boards on a grounded, static-free surface, ESD

4.

pad or in a proper ESD bag. Do not slide the modules or stand alone units over
any surface.

WARNING!

Integrated circuits and fiber optic components are
extremely susceptible to electrostatic discharge damage. Do not
handle these components directly unless you are a qualified service
technician and use tools and techniques that conform to accepted
industry practices.

30

Certifications

CE: The products described herein comply with the Council Directive on

Electromagnetic Compatibility (2004/108/EC).

European Directive 2002/96/EC (WEEE) requires that any equipment that bears this
symbol on product or packaging must not be disposed of with unsorted municipal
waste. This symbol indicates that the equipment should be disposed of separately
from regular household waste. It is the consumer’s responsibility to dispose of this
and all equipment so marked through designated collection facilities appointed by
government or local authorities. Following these steps through proper disposal and
recycling will help prevent potential negative consequences to the environment and
human health. For more detailed information about proper disposal, please contact
local authorities, waste disposal services, or the point of purchase for this equipment.

31

19772 Pauling • Foothill Ranch, CA 92610-2611 USA

TEL: [phone] • FAX: [phone]

www.imcnetworks.com

© 2010 IMC Networks. All rights reserved.
The information in this document is subject to change without notice. IMC Networks assumes no responsibility for any
errors that may appear in this document. IE-iMcV-T1-Mux/4 + Ethernet is a trademark of IMC Networks. Other brands
or product names may be trademarks and are the property of their respective companies.

Document Number 57-80402-00 A1 December 2010