Cronyx Qlink-3000/2e1 Operating instructions

CCC

Ministry of

Communications

of Russia

Multiplexing Modem

Qlink-3000

Models /2E1 and /E1-ETV

Installation and Operations Guide

Qlink-3000 Multiplexing modem

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Contents

Section 1. Introduction .......................................................5

1.1. Application .................................................................................................. 5

1.2. Model series ................................................................................................ 7

1.3. Order code ................................................................................................... 7

1.4. Technical specifications .............................................................................. 8

Link interface..................................................................................... 8

E1 interface (2048 kbit/s) .................................................................. 8

Ethernet interface............................................................................... 9

Emergency alarm interface................................................................ 9

Console port....................................................................................... 9

Control port SNMP ........................................................................... 9

Diagnostic modes ............................................................................ 10

Dimensions and weight ................................................................... 10

Electric power supply ...................................................................... 10

Operating conditions ....................................................................... 10

Section 2. Installation ....................................................... 11

2.1. Installation place requirements ................................................................. 11

2.2. Delivered items ......................................................................................... 11

2.4. Cable connections ..................................................................................... 11

Power supply connector .................................................................. 12

Ground terminal............................................................................... 13

Link connector ................................................................................. 13

E1 port connectors ........................................................................... 13

Ethernet port connector ................................................................... 14

SNMP port connector ...................................................................... 14

Console port connector.................................................................... 14

Emergency alarm connector ............................................................ 15

Section 3. Operations .......................................................16

3.1. Indicators................................................................................................... 16

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3.2. Emergency alarms..................................................................................... 21

3.3. Device responses to emergencies ............................................................. 22

3.4. Loops......................................................................................................... 23

Normal mode ................................................................................... 23

E1 port loop (Port 0 loop) ............................................................... 24

E1 port tributary loop (Port 0 tributary loop) ................................. 24

Local loop on the link...................................................................... 25

Link remote loop ............................................................................. 25

3.5. Built-in BER tester ................................................................................... 26

Section 4. Control via the console port ..........................28

4.1. Upper level menu ...................................................................................... 28

4.2. Menu structure .......................................................................................... 30

Menu structure for models: ............................................................. 30

Qlink-3000/S-E1/ETV-SNMP-AC ................................................. 30

Qlink-3000/S-E1/ETV-SNMP-DC ................................................. 30

Menu structure for models: ............................................................. 30

Qlink-3000/S-2E1-SNMP-AC ........................................................ 30

Qlink-3000/S-2E1-SNMP-DC ........................................................ 30

4.3. “Statistics” menu ...................................................................................... 32

4.5. “Event counters” command ...................................................................... 34

4.6. “Loopback” menu ..................................................................................... 36

4.7. “Test” menu .............................................................................................. 36

4.8. “Configure” menu ..................................................................................... 38

“PCLK source” parameter............................................................... 39

“Mode” item .................................................................................... 39

“Port 0...” and “Port 1...” menus ..................................................... 39

“Alarm input” command ................................................................. 41

“SNMP” menu ................................................................................. 41

“Remote control” parameter............................................................ 42

“Factory settings” menu .................................................................. 43

4.9. “Link remote login” command ................................................................. 43

4.10. “Reset” command ................................................................................... 44

Section 5. Management via SNMP ..................................45

5.1. SNMP parameter settings ......................................................................... 46

5.2. Management information blocks (MIBs) ................................................. 47

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Safety precautions

!An exclamation point enclosed in a triangle warns the user about important

operations and maintenance instructions for the device.

It is mandatory to observe the existing safety rules during installation, operations, and

technical maintenance of the device. Installation, technical maintenance, and repair

operations must be performed only by qualified and certified personnel. Installation,

technical maintenance, and repair operations must not be performed by the operator or

the user.

Certificate of Conformance

No. OS / 1-TM-317

The Qlink-3000 multiplexing modem equipment has been tested in the

Telecommunications Technical Device and System Testing Center of the “TsNIIS”

(Central Research and Development Institute of Telecommunications) of the Ministry

of Communications of the Russian Federation and is certified to comply with the

following technical requirements:

• RD 45.122-99 “Data transmission equipment designed for use as subscriber sets on

public physical communication links. Technical requirements”;

• RD 45.176-2001 “Communication equipment implementing frame switching in the

local network at the data link layer. Technical requirements”

• GOST R ISO 9001-96.

The Qlink-3000 multiplexing modem equipment is approved for use in the interlinked

communication network in Russia as subscriber sets for data transmission over non-

superimposed physical communication links.

CCC

Ministry of

Communications

of Russia

Qlink-3000 Multiplexing modem

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Section 1. Introduction

1.1. Application

Qlink-3000 – is a modem family for physical links, designed to operate over a single twisted

pair. Models equipped with two data ports (/2E1 and /E1-ETV) include the multiplexing

device and allow transmission of two independent data streams over a single twisted pair.

Device structural diagram is presented on the figure:

Port 0

E1 (G.703, G.704)

Port 1

E1 (G.703, G.704) or

Ethernet 10/100BaseT

(Ethernet 10BaseT)

Multi-

plexer

SHDSL

transceiver

SNMP port

Console port Processor

Maximum data transmission rate is 2304 kbit/s (36 x 64 kbit/s). Maximum transmission

distance depends on the data transmission rate in the link. The maximum link length for

the 26 AWG (0.4 mm) cable is given in the following table:

knilehtnietaratadlacisyhP etarnoissimsnartataD htgnelelbacmumixaM

s/tibk0232 s/tibk4032 mk0.4

s/tibk487 s/tibk867 mk4.5

s/tibk272 s/tibk652 mk6.7

The picture shows the diagrams of the item's use:

Port 1 (Ethernet)

Port 0 (E1)

Ethernet (SNMP)

Port 1 (Ethernet)

Port 0 (E1)

Qlink-3000

Ethernet Hub

Switch

Qlink-3000

Telephone

exchange

Router

Physical line

("copper pair")

Telephone

exchange

Ethernet

network

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Main Qlink-3000 multiplexing modem characteristics:

• transmission of two data streams over a two-wire physical link for up to 10 km

distance;

• compliance with ITU-T standards G.703, G.704, G.706, G.991.2, and IEEE 802.3;

• local and remote loops;

• Built-in Bit Error Rate Tester (BER tester);

• RS-232 console port;

• remote control and monitoring over the SNMP protocol via a separate Ethernet port;

• emergency alarms (“dry” contacts of relay);

• design for mounting in a 19” rack (1U);

• built-in power supply unit for AC (176-264 V, 50 Hz) or DC (36-72 V) power

source.

The device may be controlled via the RS-232 interface using an ASCII terminal, or via

Ethernet using the SNMP protocol.

Indicators on the device's front panel show link status, enabled loops and enabled testing

mode. The built-in BER-tester allows measuring error rate in the link path. The

measurements are performed using fixed or pseudo-random code according to the O.151

recommendation (the pattern length is 215-1=32767 bits).

In order to test links in case when there are no personnel at the remote end of the link,

there is a remote login capability (to control the remote device from the console port of

the local device). Commands are transmitted to the remote device via an additional

service channel. At user's request remote configuration parameter changes may be

prohibited.

The device is equipped with an emergency alarm relay, the “dry” contacts of which may

switch on an external device to call the operations personnel.

The multiplexing modem has the capability of firmware upgrades. The instructions for

upgrading the firmware may be found at the www.cronyx.ru website.

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1.2. Model series

The Qlink-3000 multiplexing modem has two data ports, one of which (Port 0) has an

E1 interface (G.703, G.704), and the other may be E1, Ethernet 10/100Base-T, digital

V.35 port, or a universal port (V.35, RS-530, RS-232 or X.21).

The multiplexing modem may also be equipped with an additional Ethernet 10Base-T

port for control over the SNMP protocol.

Additionally, the Qlink-3000 family includes modems with a single data port with a E1,

Ethernet 10/100Base-T, V.35 interface or a universal interface (V.35, RS-530, RS-

232, X.21).

All Qlink-3000 family modems are compatible with each other, i.e. there may be a

single model on one end of the link, and another model on the other.

1.3. Order code

Qlink-3000

Qlink-3000 / S - E1/ETV-SNMP-AC

Model:

Design:

S - 1U for a 19" rack

B - desktop

Data port(s):

2E1 - two E1 ports

E1-ETV - E1 and Ethernet (10/100Base-T)

E1-V - E1 and V.35

E1-M - E1 and V.35/RS-530/RS-232/X.21

E1 - single E1 port

ETV - single Ethernet port (10/100Base-T)

V - single V.35 port

M - single V.35/RS-530/RS-232/X.21 port

Power supply

220VAC

36...72VDC

or 40...60VDC

Control over SNMP

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1.4. Technical specifications

Link interface

Link requirements .......................................... Unloaded twisted pair

Link data rate.................................................. 208 kbit/s to 2320 kbit/s

Link length ..................................................... Up to 10 km with a 0.6 mm wire strand

diameter,

up to 7.6 km with a 0.4 mm wire strand

diameter

Connector ....................................................... RJ type (female, 8 pins)

Encoding......................................................... TC-PAM

Transmission path synchronization................ Internal (from an internal clock-pulse

oscillator)

From Port (from the receiving path of

the E1 port)

Overvoltage protection ................................... SIDACtor

Overcurrent protection ................................... Fuse

E1 interface (2048 kbit/s)

Connector ....................................................... RJ-48 (female)

Link impedance .............................................. 120 Ohms, balanced (twisted pair)

Cycle structure................................................ according to G.704, or transparent stream

transmission (Unframed G.703)

Signal level at the receiver input.................... 0 to -43dB, up to 2 km over 22AWG

(0.6 mm) twisted pairs

Jitter attenuator ................................................ in the receiver path

Data encoding................................................. HDB3

Error detection ................................................ Bipolar violation

Overvoltage protection ................................... TVS

Overcurrent protection ................................... Fuse

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Ethernet interface

Interface type .................................................. Ethernet 100Base-T

Connector type ............................................... RJ-45 (female)

Bandwidth ...................................................... 64 to 2304 kbit/s

Operating mode .............................................. 100 Mbps Full-duplex,

100 Mbps Half-duplex,

10 Mbps Full-duplex,

10 Mbps Half-duplex,

or Autonegotiation

(automatic selection)

LAN table size................................................ 15000 MAC-addresses

Maximum frame size...................................... 4224 bytes, including

MAC-layer header

Protocols ......................................................... Transparent or

Cisco-HDLC bridging IEEE protocol,

set automatically

Emergency alarm interface

Connector type ............................................... DB-9 (female)

Relay contact current...................................... Up to 600 mA

Relay contact voltage ..................................... Up to 110 VDC or 125 VAC

Console port

Interface type, ................................................. RS-232 DCE connector, DB-9 (female)

Data transfer protocol..................................... Asynchronous, 9600 bit/s,

8 bits/character, 1 stop bit, no parity

Modem signals ............................................... DTR, DSR, CTS, RTS, CD

Control port SNMP

Interface type .................................................. Ethernet 10Base-T

Connector ....................................................... RJ-45

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Diagnostic modes

Loops .............................................................. Local, remote

Error rate control ............................................ Built-in

Control ............................................................ Via the RS-232 control port,

via the SNMP interface, or from a

remote device

Dimensions and weight

Design............................................................. For mounting in a 19”rack, height 1U

Size ................................................................. 444 mm x 262 mm x 44 mm

Weight............................................................. 3.4 kg

Electric power supply

176–264 VAC, 50 Hz

36–72 VDC

Power consumption ........................................ Not more than 12.5 W

Operating conditions

Temperature .................................................... 0 to 50 °C

Relative humidity ........................................... Up to 80%, no condensation

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Section 2. Installation

2.1. Installation place requirements

The device must be grounded before switching on, there is a ground terminal screw on

the front panel provided for this purpose.

When installing the multiplexing modem, allow for at least 10 cm of free space next to

the front panel for interface cable connections.

The ambient temperature must be 0 to +50 °C at 80% humidity, no condensation.

2.2. Delivered items

Delivered items include:

• Qlink-3000 unit – 1 pc.;

• bracket for mounting the Qlink-3000 unit in a 19” rack – 2 pcs.;

• self-adhesive stand for the Qlink-3000 unit – 4 pcs.;

• power supply cable (for the AC model) – 1 pc;

• removable part of the power supply connector terminal unit

(for the DC model) – 1 pc.;

• user's guide –1 pc.

2.4. Cable connections

The front panel of the multiplexing modem contains connectors for connecting physical

links, E1 link(s), Ethernet link, SNMP control link, console, emergency alarm and power

supply.

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E1 port

(Port 0)

Ethernet port

(Port 1) SNMP port

Emergency

alarm

Console

Link Grounding Power supply

SNMP port

Emergency

alarm

Console

Link Grounding Power supply

E1 port

(Port 0)

E1 port

(Port 1)

Front panel connector locations for Qlink-3000/S-2E1-SNMP model

Power supply connector

A standard mains connector is used to connect the AC power supply cable (for the “AC”

model). The power supply cable is supplied with the device.

To connect the DC power supply cable (for the “DC” model), the power supply connector

is used, shown below (view from multiplexer's front panel side):

+ 48 VDC- 48 VDC

Connected to the chassis

The corresponding removable part of the terminal unit of the power supply connector is

supplied with the device.

Front panel connector locations for Qlink-3000/S-E1/ETV-SNMP model

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Ground terminal

There is a M4 screw on the front panel for device grounding.

!Before switching the device on, and before connecting other cables, the

multiplexer unit must be grounded properly.

Link connector

The RJ type connector (8 pins) is used for link connection:

1-not used

2-not used

3-not used

4- Line A

5- Line B

6-not used

7-not used

8-not used

1 8

E1 port connectors

The RJ-48 connector is used for E1 link connections:

1 - Input A

2 - Input B

3 - not used

4 - Output A

5 - Output B

6 - not used

7 - not used

8 - not used

1 8

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Ethernet port connector

The RJ-45 female socket is used to connect the Ethernet port (10/100Base-T, IEEE

802.3 ) when operating using the remote bridge protocol:

1 - TX+ (output)

2 - TX (output)

3 - RX+ (input)

4 - not used

5 - not used

6 - RX (input)

7 - not used

8 - not used

1 8

Use direct cable for connection to the Ethernet switch.

SNMP port connector

An RJ-45 female socket is used for Ethernet port connection (10Base-T, IEEE 802.3

standard) for control over the SNMP protocol, shown above (see “Ethernet” port

connector”).

Use direct cable for connection to the switch.

Console port connector

ADB-9 (female) connector is used for console connection. The console port has a standard

RS-232 DCE interface, and utilizes the following settings: asynchronous mode, 9600

baud speed, 8 bits/symbol, 1 stop bit, no parity. Use a direct cable for connection to a PC

COM port.

!An RTS signal from the controlling terminal to the device port must be

provided when connecting the console.

It is recommended to use the following cable diagrams:

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Emergency alarm connector

to Qlink3000 console

(DB9 male)

to Control terminal

Cable without modem control

GND 5

TXD 3

RXD 2

RTS 7

CTS 8

DTR 4

CD 1

GND

TXD

RXD

RTS

CTS

DTR

DSR

Cable with modem control

GND 5

TXD 3

RXD 2

RTS 7

CTS 8

DTR 4

DSR 6

CD 1

GND

TXD

RXD

RTS

CTS

DTR

DSR

to Qlink3000 console

(DB9 male)

to Control terminal

A DB-9 (female) connector is used for emergency alarm connection. The external input

sensor (pins 3 and 7) must be isolated from other electrical circuits. Pins 1, 2 and 6 are

reserved and must not be used.

3 - input contact

4 - connected to the middle

contact (9) during normal

operation, open during

errors

5 - open during normal operations,

connected to the middle

contact (9) during errors

7 - common wire (GND)

8 - common wire (GND)

9 - middle contact

Emergency alarm

circuits

Normal state shown

External input sensor

(user-supplied equipment)

5 4 3 2 1

8 79 6

+5 V

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Section 3. Operations

3.1. Indicators

The front panel contains indicators, showing the status of the device. The list of indicators

and their functions are specified below in the text.

Qlink-3000/S-2E1-SNMP front panel

TST

SNMP

1 2 43

LINK

CONSOLE ALARM

7 8

PWR

PORT 0 PORT 1

Qlink-3000/S-E1/ETV-SNMP front panel

TST

SNMP

1 2 43

LINK

CONSOLE ALARM

7 8

PWR

PORT 0

PORT 1

1Power indicator (PWR)

The power indicator lights green when power supply is on.

2BER tester indicator (TST)

The indicator lights if the BER tester is switched on. The color determines the testing

results: green - testing is performed without errors, red - test pattern not detected, or

errors detected during testing. When the BER tester is switched off, the TST indicator

does not light.

3E1 port status and mode indicator (E1-LOC)

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This indicator shows the status and the mode of the E1 port. The color shows the port

status: green - no errors (OK), red - no link signal (LOS) or error (AIS, LOF, LOMF).

The E1 port operating mode is shown by blinking: no blinking - normal operation,

blinks (single flashes) - the BER tester is enabled on the port tributary or loop is enabled

for the port, blinks (continuously) - loop is enabled on the port tributary. If the port is

disabled, then the corresponding E1-LOC indicator is extinguished. The table contains

the possible states of the E1-LOC indicator:

Color Blinking Description

Does not light Port disabled.

Green No Normal operation (status = OK, local loop and

port tributary loop disabled, BER tester

on the port tributary disabled).

Green Single Port status = OK, BER tester enabled on port tributary

flashes tester, or the local loop is enabled towards the G.703

link.

Red No No link signal G.703 (LOS). Local loop and port tributary

loop disabled, BER tester on port tributary disabled.

Red Single No link signal G.703 (LOS). BER tester

blinks enabled on port tributary BER or local

loop enabled towards G.703 link.

Red Flashes If the E1-REM indicator flashes red,

the port tributary loop is enabled. If the E1-REM indicator

does not blink, then there is signal in the link, but either

the AIS alarm indication signal is received, or

Loss Of Frame (LOF) or Loss of MultiFrame

synchronization (LOMF) found.

4Remote E1 port status and mode indicator (E1-REM)

This indicator shows the status and the mode of the remote E1 port. If the indicator is

green, then there are no errors on the remote side, and red indicates error (FARLOF - the

remote side transmits the alarm indication signal (bit A of the zero timeslot). The E1-

REM flashes red, if the tributary loop is enabled on the port tributary. If the port disabled

or there is no information from the remote device (for example, when operating in the

unframed mode), then the corresponding E1-REM indicator does not light. The table

contains the possible states of the E1-REM indicator:

Color Blinking Description

Does not light Port disabled or no information from the remote device.

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Green No Normal operation (no alarm indication signal from the

remote).

Red No Alarm indication signal received from the remote

(bit A of the zero timeslot).

Red Single Loss of the G.703 signal in the link (LOS),

alarm indication signal (AIS) received, no frame (LOF)

or multiframe (LOMF) synchronization. BER tester is

enabled on port tributary or local loop enabled towards

the G.703 link.

Red Blinks Port tributary loop enabled (in this case the

E1-LOC indicator continuously flashes red).

5SHDSL link status and mode indicator (LINK-LOC)

This indicator shows the status and the mode of the SHDSL link. The color shows the

port status: green - connection established, no errors (OK), red - no connection or error

present (CRC anomaly, LOSW defect, Loop attenuation defect, SNR margin defect,

LOSW failure). The SHDSL port operating mode is indicated by blinking: does not

blink - normal operation, blinks (single flashes) - local loop or BER tester is enabled.

The table contains possible LINK-LOC indicator states:

Color Blinking Description

Green No Normal operation (connection established,

no errors, local loop and testing

mode disabled).

Green Single Port status = OK, BER tester or local loop

flashes enabled on the link.

Red No Connection not established (connection activation)

Local loop and testing disabled.

Red Single Connection not established or errors in the link

flashes (CRC anomaly, LOSW defect, Loop attenuation

defect, SNR margin defect, LOSW failure), the built-in

BER tester or local loop enabled on the link.

Red Blinks Connection established, but there are errors in the link

continuously (CRC anomaly, LOSW defect, Loop attenuation defect,

SNR margin defect, LOSW failure). Local loop and

link testing disabled.

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6Remote SHDSL port status and mode indicator (LINK-REM)

This indicator shows the remote SHDSL port status and mode. If information about the

remote side is unavailable (connection not established, or service link does not operate

due to errors), then the LINK-REM indicator does not light. Color shows the port status:

green - connection established, no errors (OK), red - error (CRC anomaly, LOSW defect,

Loop attenuation defect, SNR margin defect, LOSW failure). The remote loop enabled

status is indicated by flashing: does not flash - normal operation, flashes (single flashes)

- remote loop enabled. The table contains possible LINK-REM indicator states:

Color Blinking Description

Does not light Remote device state unavailable (no

connection or errors in the link).

Green No Normal operation (connection established, no-

errors, remote loop disabled).

Green Single Connection activated, local loop

flashes enabled.

Red No Different link transmission rates set on local

and remote devices, or error on the remote side

(CRC anomaly, LOSW defect, Loop attenuation defect,

SNR margin defect, LOSW failure). Remote loop

disabled.

Red Single Error on the remote side (CRC anomaly, LOSW

flashes defect, Loop attenuation defect, SNR margin

defect, LOSW failure). Remote loop enabled.

7SNMP port activity indicator (SNMP-ACT)

The SNMP-ACT lights green during data reception/transmission over the SNMP port.

8SNMP port state indicator (SNMP-LINK)

The SNMP-LINK indicator does not light if the Ethernet cable is not connected to it. If

the cable is connected, then it lights green.

9Ethernet port mode indicator (ETH-FAST)

The indicator lights green, if the cable is connected to the Ethernet port, and the 100BaseT

mode is used. If the Ethernet cable is not connected to the port, or the 10BaseT mode is

used, then the ETH-FAST indicator does not light.

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10 Ethernet port state indicator (ETH-LINK)

The ETH-LINK indicator does not light, if the Ethernet cable is not connected to the

port, and lights green if the cable is connected to the Ethernet port (the indicator flashes

during data reception and transmission).

11 Ethernet port error indicator (ETH-LOS)

The ETH-LOS indicator lights red, if the Ethernet cable is not connected to the port,

and flashes red during Ethernet bridge errors.

12 Ethernet port status indicator (ETH-STATUS)

The ETH-STATUS indicator does not light, if the port is disabled, lights green during

normal operation, flashes green if the BER tester is enabled on the port tributary.

This manual suits for next models

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