Cronyx E1 - L/S Manuale utente

Modem-Converter

E1 - L/S

19-inch 1U High Version

Installation and Operating Manual

Document Version: 2.2E / 06.09.2006

2Modem-Converter E1-L/S

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, operation,

and maintenance of the device. Installation, maintenance, and repair operations must

be performed only by qualied and certied personnel. Installation, maintenance,

and repair operations may not be performed by the operator or the user.

e E1-L equipment has been tested in the Communications hardware and sys-

tems testing center of CNIIS of the Ministry of Communications of the Russian

Federation and in the Sviaz’–Certicat quality systems certication centre and has

been acknowledged to comply the following technical specications:

•«Technical requirements for the hardware of the exible multiplexor (multifunc-

tional channelizing equipment with exible conguration ability)», approved

by the Ministry of Communications of the Russian Federation at February 20,

1997;

•GOST R ISO 9001-96.

e E1-L equipment is admitted to be used in domestic and intrazone commu-

nication networks of the Russian Federation as a multifunctional channelizing

equipment.

Firmware revision

is document describes the E1-L/S version of the E1-L Modem. e E1-L/S version is

the 1U high rack mount device for the standard 19-inch cabinet.

is document corresponds to the models with the rmware revision as follows:

Model identication Firmware revision

E1-L/S - ETV revision F, 13/04/2005

E1-L/S - V revision F, 13/04/2005

E1-L/S - M revision F, 13/04/2005

Cronyx reserves the right to make changes to technical characteristics and design of

the device without the prior notification of customers.

4Modem-Converter E1-L/S

Contents

Chapter 1. Introduction...................................................6

1.1. Application............................................................................................... 6

1.2. Operation.................................................................................................. 7

1.3. Ordering Information ............................................................................... 8

1.4. Technical Specications........................................................................... 8

E1 Link Interface ..................................................................................... 8

Digital Port Interface: V.35/RS‑530/RS‑232/X.21 .................................. 9

Digital Port Interface: Ethernet 10/100Base-T ........................................ 9

Alarm Port Interface ................................................................................ 9

Console Port Interface ............................................................................. 9

SNMP Port Interface.............................................................................. 10

Diagnostic Modes .................................................................................. 10

Mechanical Characteristics.................................................................... 10

Power Requirements.............................................................................. 10

Environmental Characteristics............................................................... 10

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

2.1. Site Requirements ...................................................................................11

2.2. Delivered Items.......................................................................................11

2.3. Connections.............................................................................................11

Power Connection.................................................................................. 12

Ground Terminal.................................................................................... 12

E1 Link Connector................................................................................. 13

Ethernet 10/100Base-T Port and SNMP Port Connectors ..................... 13

Digital Port (V.35 / RS‑530 / RS‑232 / X.21) Connector ...................... 14

Digital Port (V.35) Connector................................................................ 15

Console Port Connector......................................................................... 15

Alarm Port Connector............................................................................ 16

Chapter 3. Operation.................................................... 17

3.1. Front Panel Indicators ............................................................................ 17

3.2. Synchronization Modes.......................................................................... 20

DTE Emulation...................................................................................... 21

DTE emulation, external transmit clocks ...................................... 21

Contents

DTE emulation, external transmit and receive clocks................... 22

HDLC Buffer Mode............................................................................... 22

3.3. Alarm Conditions ................................................................................... 24

3.4. Loopbacks .............................................................................................. 25

Normal State (No Loopbacks Enabled)................................................. 25

Local Link Loopback............................................................................. 25

Remote Link Loopback ......................................................................... 26

Digital Port Loopback............................................................................ 26

3.5. Built-in BER Tester................................................................................ 26

Link Testing: Remote Link Loopback Enabled..................................... 27

Link Testing: Two Ber Testers Enabled Against Each Other................. 28

Section 4. Control From the Console ......................... 29

4.1. Upper Level Menu ................................................................................. 29

4.2. Menu Structure....................................................................................... 32

4.3. «Statistics» Command............................................................................ 33

4.4. «Event counters» Command .................................................................. 35

4.5. «Loopback» Menu ................................................................................. 37

4.6. «Test» Menu........................................................................................... 38

4.7. «Congure» Menu ................................................................................. 39

«Link» Menu ......................................................................................... 39

«Port» Menu for V.35 / RS-530 / RS-232 / X.21 Digital Port............... 41

Synchronous Mode ........................................................................ 41

Asynchronous Mode...................................................................... 42

«Port» Menu for Ethernet 10/100Base-T Port....................................... 43

«SNMP» Menu ..................................................................................... 44

«Sensor input» Command...................................................................... 45

«Factory settings» Command ................................................................ 45

«Save parameters» Command ............................................................... 46

«Restore parameters» Command........................................................... 46

4.8. «Link remote login» Command ............................................................. 47

4.9. «Reset» Command ................................................................................. 47

Section 5. SNMP-based Management......................... 48

5.1. SNMP Parameters Setting...................................................................... 48

5.2. Management Information Blocks (MIBs).............................................. 49

6Modem-Converter E1-L/S

Chapter 1. Introduction

1.1. Application

e E1-L device is a modem-converter for E1-based networks.

Note. Hereinaer the term «E1» is used for a designation of the data link having the interface

at nominal bit rate of 2048 kbps in conformity with the ITU-T Recommendation G.703,

and operated in both framed mode in conformity with the ITU-T Recommendation G.704

(or with the IKM-30) and unframed (transparent) mode.

is document describes the E1-L/S version of the E1-L Modem. e E1-L/S version

is the 1U high rack mount device for the standard 19-inch cabinet. E1-L device is also

available as stand-alone unit (E1-L/B), as a card for 19-inch 3U Cronyx rack (E1-L/R)

and as a card for Intel-compatible computers (Tau-PCI/E1).

E1-L

E1-based

Network

Router

V.35 / RS-530 /

RS-232 / X.21

E1-L

e E1-L device accepts digital interface data at any multiple rate of 64 kbps up to 2048

kbps and places it into E1 frame using required number of timeslots or (in unframed

mode) the whole bandwidth of 2048 kbps.

e E1-L device may be ordered with Ethernet10/100Base-T, RS-530, RS-232, V.35 or

X.21 interfaces with standard connectors.

Note. Hereinaer the term «Ethernet 10/100Base-T» is used for a designation of the data

link having switcheble or autodetecting LAN interface 10BASE-T or 100BASE-T (phisical

level 100BASE-TX) in conformity with the IEEE 802.3 Standard.

Multi-standard interface option with HDB44 connector is also available. e type of

interface in this case is determined by adapter cable: RS-232, RS-530, RS-449, RS-442,

V.35 or X.21.

is document describes the E1-L/S version of the E1-L Modem. e E1-L/S version is

the 1U high rack mount device for the standard 19-inch cabinet.

E1-L device is also available as stand-alone unit (E1-L/B), as a card for 19-inch 3U Cronyx

rack (E1-L/R) and as a card for Intel-compatible computers (Tau-PCI/E1).

A pair of devices with Ethernet 10/100Base-T interface form a remote bridge for two

Chapter 1. Introduction

LANs. While in unframed mode the E1-L modem may be used together with the PCM2

modem.

VLAN support is provided by implementing of Ethernet packets with the length enlarged

to 4224 bytes.

e device operation may be controlled from the console (ASCII terminal connected to

the RS-232 control port). e device is equipped with the dedicated Ethernet 10Base-T

port to support SNMP-based management.

e modem’s front panel indicators display the channels availability, loopbacks enable

and testing modes.

e built-in BER-tester allows the error level measurement in the E1 link. e meas-

urements are performed on the xed or pseudorandom code subject to the ITU-T

Recommendation O.151 guidelines (supported length of sequence is 215-1=32767

bits).

ere is a capability of remote login to control the remote device operation from the

console port of the local device (this mode may be useful if there is no service person-

nel on the remote end of the link). Commands are transmitted to the remote device

via additional monitoring channel. is channel utilizes special bit of the timeslot 0 (in

accordance with the ITU-T Recommendation G.704) or any other user selectable bit

of any timeslot other than 0. e remote login capability is not supported in unframed

mode of operation.

e device is equipped with an emergency alarm relay. e state of the relay on the lo-

cal device depends on fault conditions detected and may be controlled from the remote

device. e relay operates in «dry contacts» mode and may be used for prompt mainte-

nance (according to the ITU-T Recommendations G.742 and G.751).

e rmware of the device may be updated by user. e instructions for updating the

rmware may be found at the www.cronyx.ru web site.

1.2. Operation

Data accepted from the digital interface port is placed into selected timeslots of the E1

stream for output through the E1 link. Unused timeslots are lled by ones.

Data retrieved from the selected timeslots of the E1 stream accepted from the E1 link is

transferred to the output of the digital interface port. Unused timeslots are ignored.

User may choose to disable E1 frame structure. In this case the whole bandwidth of

2048 kbps will be used for data transfer (bit data rate at the digital interface port may be

limited if required).

8Modem-Converter E1-L/S

1.3. Ordering Information

E1-L / S —ETV —SNMP —AC

Power supply:

AC — 176...264 VAC

DC — 36...72 VDC

Digital port:

ETV — Ethernet 10/100Base-T

V — V.35

M — multistandard (V.35/RS-530/RS-232/X.21)

SNMP port:

dedicated Ethernet 10Base-T

port for SNMP-based

management

Version:

S — 1U rack mount for 19-inch

cabinet

1.4. Technical Specications

E1 Link Interface

Nominal bit rate..............................................2048 kbps

Connector........................................................RJ-48 (8-wire socket)

Coding .............................................................HDB3 or AMI

Framing............................................................ Framed mode: frame structure in accor-

dance with the ITU-T Recommendation

G.704; multiframes: CRC4, CAS (G.704).

Unframed mode: transparent stream trans-

mission without framing

Error monitoring............................................Code violation

Frequencies oset adjustment ......................Controlled slip buers on input

Transmit timing source .................................Internal oscillator, E1 receiver, digital in-

terface

Line impedance............................................... 120 Ohm symmetric (twisted pair)

Receiver signal level .......................................From 0 up to –43 dB

Jitter attenuation.............................................Both in receive and transmit path, up to

120 UIpp attenuation

Surge protection..............................................TVS

Over-current protection ................................Safety fuse

Chapter 1. Introduction

Digital Port Interface: V.35/RS-530/RS-232/X.21

Data transfer rate.............................................from 64 up to 1984 kbps (N x 64 kbps) in

framed mode or up to 2048 kbps in un-

framed mode

Clock options ...................................................TXC, RXC, ETC, ERC

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

Connector type ................................................Multistandard interface (V.35 / RS-530 /

RS-232 / X.21): HDB44 (female);

V.35 interface: M-34 (female);

RS-530/RS-232 interface: DB25 (female);

X.21 interface: DB15 (female)

Digital Port Interface: Ethernet 10/100Base-T

Interface type ...................................................IEEE 802.3 10BASE-

T/100BASE-T(100BASE-TX)

Connector type ................................................RJ-45 (8-wire socket)

Bandwidth ........................................................from 64 up to 1984 kbps (N x 64 kbps) in

framed mode or up to 2048 kbps in un-

framed mode

Operating mode...............................................100 Mbps, full duplex;

100 Mbps, half duplex;

10 Mbps, full duplex;

10 Mbps, half duplex;

autonegotiation

MAC address table size...................................15000 MAC addresses

Maximum packet size .....................................4224 bytes, including MAC level header

Protocol.............................................................Transparent or

Cisco-HDLC bridging IEEE protocol,

selectable automatically

Alarm Port Interface

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

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

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

Console Port Interface

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

10 Modem-Converter E1-L/S

Data transfer mode...............................................Asynchronous, 9 600 baud, 8 bits per

character, 1 stop bit, no parity

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

SNMP Port Interface

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

Connector type .....................................................RJ-45 (8-wire socket)

Diagnostic Modes

Loopbacks.........................................................Local on E1 link, remote on E1 link, lo-

cal on digital port (excluding Ethernet

10/100Base-T port)

Error rate measurement..................................Built-in BER tester

Control..............................................................Via the console port, from a remote de-

vice, via the SNMP port

Mechanical Characteristics

Construction ....................................................1U high rack mount metal enclosure for

19-inch cabinet

Dimensions ......................................................444 mm × 262 mm × 44 mm

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

Power Requirements

AC supply voltage............................................176–264 VAC, 50 Hz (for the «-AC» ver-

sion)

DC supply voltage ...........................................36–72 VDC (for the «-DC» version)

Max. power consumption...............................20 VA

Environmental Characteristics

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

Relative humidity ............................................Up to 80%, non-condensing

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