Anda telecom Fe1/v.35 User manual

FE1/V.35 Interface Converter

Version: V3.2.4

Date: 5.12.2005

User Manual

2-20

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Chapter 1 Introduction..........................................................................3

1.1 Description................................................................................................ 3

1.2 Characteristics ........................................................................................... 3

1.3 Technical Parameters ................................................................................. 3

Chapter 2 Operation .............................................................................5

2.1 Front Panel ................................................................................................ 5

2.1.1 Indicators........................................................................................... 5

2.2 Back Panel................................................................................................. 6

2.2.1 Power Supply .................................................................................... 6

2.2.2 E1 Interface........................................................................................ 7

2.2.3 V.35 Interface .................................................................................... 7

2.2.4 Time Slots Settings ............................................................................. 9

2.2.5 Settings of SW.................................................................................. 11

Chapter 3 Installation..........................................................................15

3.1 Appearance checking............................................................................... 15

3.2 Installation process................................................................................... 15

3.3 Installation notice proceeding................................................................... 15

Chapter 4 Troubleshooting ..................................................................17

Chapter 5 Appendix Table...................................................................19

User Manual

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Chapter 1 Introduction

1.1 Description

FE1/V.35 interface converter is designed based on an ASIC chip. The chip

adopts special patent technology of reduced dithering, digital phase

locked and distill clock, E1 anti-jamming, etc. The inner software and

hardware are all modularity, integrating coding, decoding, message

insertion and alarm, and make the circuit simple so as to improve the

reliability of the device. FE1/V.35 interface converter convert V.35 to E1,

and V.35 interface works at DCE mode.

1.2 Characteristics

yDithering tolerance and dithering transmission characteristic of E1

channel have high performance, which is superior to industry

standard

ySupport CAS and CCS mode

ySupport CRC-4 verifying

yFollow remote device settings can be set

yData rate of E1 interface N×64kbps(N=1~32)is adjustable

ySupport autosense V.35 phase

yThree clock modes are selectable

yThe circuit is designed simply, the device works steadily

1.3 Technical Parameters

Mode: DCE

Standard: comply with ITU-T V.35 standard

Data rate: N×64Kbps(N=1~32),framed

V.35

Interface

Connector: DB25 female

Data rate: N×64Kbps（N=1~32）

Tolerance: ±50ppm

Line code: HDB3

E1

Interface

Electric characteristic: comply with ITU-T G.703

standard

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4-20

Dithering characteristic: comply with ITU-T G.823

standard

Dithering tolerance: comply with ITU-T G.823 standard

Impedance: 75Ωunbalanced/ 120Ωbalanced

Clock mode

Internal clock (default)

External clock

Line clock

Voltage: AC110V/AC 240V/DC –48V/DC –48V/DC

+24V

Power

supply Power consumption: ≤5W

Environment

Working temperature: 0°C~50°C

Storage temperature: -40°C~+70°C

Relative humidity: 5%~95 %

Weight 0.4Kg

Size 212mm×150mm×38mm

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Chapter 2 Operation

2.1 Front Panel

Fig 1. Front panel of FE1/V.35 Interface Converter

2.1.1 Indicators

There are seven indicators in the front panel of FE1/V.35 interface converter,

from right to left:

yPWR Green Indicator of power supply

Bright when power is on

yE1LOS Red

Alarm indicator of E1 code-breaking

Bright when local device E1 code-breaking

Blinking when remote device E1 code-breaking

Local has higher priority

yE1LOF Red

Alarm indicator of E1 frame-lost

Bright when local device E1 frame lost

Blinking when remote device E1 frame lost.

Local has higher priority

yTXD Green Indicator of V.35 data transmittal

Blinking when V.35 data transmitted

yRXD Green Indicator of V.35 data receiving

Blinking when V.35 data received

yPTOK Green

Indicator of test result

OFF when device work normally

Bright when the test result is right

yTEST/

CRC_ERR

Double

colors

Indicator of test and CRC error

OFF when device work normally

Red: bright when local CRC error

Blinking when remote CRC error

Green: bright when device in test mode

Blinking when remote device in test mode

Table 1. Specification of front panel indicators

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6-20

NOTE:

External clock and the connected DTE device doses not supply clock,

E1LOS still bright when E1 looping.

2.2 Back Panel

Fig 2. Back panel of FE1/V.35 Interface Converter (AC)

Fig 3. Back panel of FE1/ V.35 Interface Converter (DC)

2.2.1 Power Supply

AC socket: AC 220V input.

DC socket:

If the power supply is +48V, connect the device + pole with power +48V

pole, the device – pole with power GND. +24V power supply must be

used with DC+24V model device:

Fig 4. Sketch map of DC+48V connection

If the power supply is -48V, connect the device + pole with power GND

pole, the device – pole with power -48V:

User Manual

7-20

Fig 5. Sketch map of DC-48V connection

NOTE:

Please check the power polarity carefully, and connect after everything is

confirmed. Otherwise the equipment may be caused the forever damages

and we won’t take any responsibility because of this!

2.2.2 E1 Interface

E1 75Ω/120Ωswitch

STATE 75 /120 INTERFACEΩΩ

120Ωbalanced interface

75 unΩbalanced interface

Table 2. Definition of E1 75 /120 switchΩΩ

75Ωunbalanced E1 interface connector are BNC connector, RX indicate

E1 input, TX indicate E1 output;

120Ωbalanced E1 interface connector is RJ45 connector, the pin

assignment defined as below:

Fig 6. Sketch map of RJ45 connector

120Ωbalanced E1 interface pin assignment:

PIN 1 2 3 4 5 6 7 8

Definition TxD+ TxD- RxD+ RxD-

Table 3. Pin assignment of 120Ωbalanced E1 interface

2.2.3 V.35 Interface

The DB25 Female connector in the rear panel is V.35 data interface:

User Manual

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DB25 Pin No. Signal Function corresponding

1 Protective Ground A

7 Signal Ground B

2 Transmitted data A P

14 Transmitted data B S

3 Received data A R

16 Received data B T

4 Request to send C

5 Clear to send D

6 DCE ready E

20 DTE ready H

8 Data carrier wave tested F

24 Transmit clock A(from DTE) U

10 Transmit clock B(from DTE) W

15 Transmit clock A(from DCE) Y

12 Transmit clock B(from DCE) AA

17 Receive clock A(from DCE) V

9 Receive clock B(from DCE) X

Table4. V.35 Interface Signal Assignments

Connect FE1/V.35 Interface Converter with DTE device by the equipped

DB25M/M34F cable.

NOTE:

Connect with DCE device by intercross cable, facture of intercross cable

defined as below, note that some DCE device pin assignment are different:

A B

DB25 Pin Definition DB25 Pin Definition

1 Protective Ground 1 Protective Ground

7 Signal Ground 7 Signal Ground

2 Transmitted data A 3 Received data A

14 Transmitted data B 16 Received data B

3 Received data A 2 Transmitted data A

16 Received data B 14 Transmitted data B

4 Request to send 8 Data carrier wave tested

5 Clear to send 8 Data carrier wave tested

6 DCE ready 20 DTE ready

20 DTE ready 6 DCE ready

8 Data carrier wave tested 4 Clear to send

24 Transmit clock A(from DTE) 17 Receive clock A(from DCE)

11 Transmit clock B(from DTE) 9 Receive clock B(from DCE)

15 Transmit clock A(from DCE) /

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9-20

12 Transmit clock B(from DCE) /

17 Receive clock A(from DCE) 24 Transmit clock A(from DTE)

9 Receive clock B(from DCE) 11 Transmit clock B(from DCE)

Table 5. Facture of V.35 intercross cable

2.2.4 Time Slots Settings

Time slot settings switch for FE1/V.35 Interface Converter is located at the

bottom of the device. On the bottom board of FE1/ V.35 Interface

Converter, there is a quadrate slot. Under the slot, there are four 8-bit Dips

(totally 32 bits) for setting E1 time slots. From left to right NO.0~NO.31 bit

corresponding E1 TS0~TS31, ON when opening up the corresponding

time slot, OFF when closed.

Fig 7. Bottom panel of FE1/V.35 Interface Converter

Settings of time slot defined as below table (see the Chapter 5 Appendix

Table in detail):

SW Status Function Status Function Default

ON Unframed 2048KBps / /

0 OFF OFF OFF

16 ON

CCS (PCM31) OFF CAS (PCM30) ON

1 ON TS1 is available OFF TS1 is invalid ON

2 ON TS2 is available OFF TS2 is invalid ON

3 ON TS3 is available OFF TS3 is invalid ON

4 ON TS4 is available OFF TS4 is invalid ON

5 ON TS5 is available OFF TS5 is invalid ON

6 ON TS6 is available OFF TS6 is invalid ON

7 ON TS7 is available OFF TS7 is invalid ON

8 ON TS8 is available OFF TS8 is invalid ON

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10-20

9 ON TS9 is available OFF TS9 is invalid ON

10 ON TS10 is available OFF TS10 is invalid ON

11 ON TS11 is available OFF TS11 is invalid ON

12 ON TS12 is available OFF TS12 is invalid ON

13 ON TS13 is available OFF TS13 is invalid ON

14 ON TS14 is available OFF TS14 is invalid ON

15 ON TS15 is available OFF TS15 is invalid ON

16 ON TS16 is available OFF TS16 is invalid ON

17 ON TS17 is available OFF TS17 is invalid ON

18 ON TS18 is available OFF TS18 is invalid ON

19 ON TS19 is available OFF TS19 is invalid ON

20 ON TS20 is available OFF TS20 is invalid ON

21 ON TS21 is available OFF TS21 is invalid ON

22 ON TS22 is available OFF TS22 is invalid ON

23 ON TS23 is available OFF TS23 is invalid ON

24 ON TS24 is available OFF TS24 is invalid ON

25 ON TS25 is available OFF TS25 is invalid ON

26 ON TS26 is available OFF TS26 is invalid ON

27 ON TS27 is available OFF TS27 is invalid ON

28 ON TS28 is available OFF TS28 is invalid ON

29 ON TS29 is available OFF TS29 is invalid ON

30 ON TS30 is available OFF TS30 is invalid ON

31 ON TS31 is available OFF TS31 is invalid ON

Table 6. Settings of Time Slot

NOTE:

1) E1 framing status depends on NO.0 bit, OFF is framed, ON is

unframed.

2) E1 PCM30 or PCM31 depends on NO.16 bit, OFF is PCM30, TS16 is

used for transmitting singling; ON is PCM31, TS16 is used for

transmitting 64K data, if more than 64K, keep NO.16 bit ON and

open other bits.

3) All OFF is unframed, the rate is 2048KBps.

4) Default settings is that NO.0 bit is OFF, other bits are all ON.

User Manual

11-20

2.2.5 Settings of SW

ySummary

An 8-bit switch is located on the back panel, signed by “SW”, defined as

follows (from left to right):

SW CLOCK PHASE LOOP PATT FOLLOW

BIT 1 2 3 4 5 6 7 8

DEFAULT ON ON OFF OFF OFF OFF OFF ON

TITLE SW-1 SW-2 SW-3 SW-4 SW-5 SW-6 SW-7 SW-8

Table 7. Default settings of SW

yCLOCK Settings (SW-1, SW-2)

CLOCK SETTINGS

SW-1 (close the power) SW-2 Clock mode

ON ON INTERNAL clock (default)

OFF ON LINE clock (follow the opposite device

Time Slot settings)

OFF OFF EXTERNAL clock

Table 8. Clock settings

Internal clock (ON, ON): The clock generated by internal oscillator.

Line clock (OFF, ON): The clock recovered from receiving E1

signal, under this settings the device can

auto follow the opposite device Time slot

settings if the opposite device is INTERNAL

clock.

External clock (OFF,OFF): The clock obtains from V.35 port of

DTE/DCE device connected to.

NOTE:

1) Guarantee that there is only one Internal clock device in one chain.

2) Avoid that all device in one chain don’t set as Line clock. If it is

specific that Internal clock exist in chain, set the device Line clock. If

not, set the device as Internal clock.

3) When connected with DCE/DTE device and DCE/DTE device

generate clock, FE1/V.35 Interface Converter set as External clock.

yPhase setting(SW-3)

Bit 3 of SW in rear panel is used to set V.35 data phase. FE1/V.35 Interface

Converter can auto detect the phase of receiving data. The phase of

transmittal data can be set by this switch. Defied as below:

User Manual

12-20

SW Definition Specification Default

ON: sample when

rising

SW-3 Phase setting of transmittal V.35 data OFF: sample when

falling

OFF

Table 9. Phase setting of transmittal V.35 data

yLOOP Setting (SW-4, SW-5, SW-6)

BIT4, BIT5, BIT6 of SW (SW-4, SW-5, SW-6) are LOOP Setting, REM only

can used in framed E1, defined as below:

SW DEFINITION SPECIFICATION DEFAULT

ON: Loop

SW-4

Loop local

data back

ANA OFF: Work normally

OFF

ON: Loop

SW-5

Loop line

back

DIG OFF: Work normally

OFF

ON: Loop

SW-6

Loop the

remote device

REM OFF: Work normally

OFF

Table 10. Loop settings

SW-4: Loop local data back, shown as Fig 8:

Fig 8. Loop local data back

SW-5: Loop line back, shown as Fig 9:

Fig 9. Loop line back

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13-20

SW-6: Loop the remote device, use only in framed E1. shown as Fig 10:

Fig 10. Loop the remote device

yPATT (SW-7)

BIT7 of SW is PATT test, cooperate with loop settings to check up the

device and line. The result can get by observing PTOK:

LOCAL (Internal clock) REMOTE (Line clock) LOCAL

SW-4

ANA

SW-5

DIG

SW-6

REM

SW-7

PATT

SW-4

ANA

SW-5

DIG

SW-6

REM

SW-7

PATT PTOK TEST

CRC_ERR

SPECIFICATION

OFF OFF OFF OFF OFF OFF OFF OFF Not

bright

Not

bright Work normally

ON OFF OFF OFF OFF OFF OFF OFF Not

bright Green Loop local data

back

OFF ON OFF OFF OFF OFF OFF OFF Not

bright Green

Loop line back, if

E1 is framing, the

led of test in the

remote device is

blinking.

OFF OFF ON OFF OFF OFF OFF OFF Not

bright

Blinking

Green

Loop the remote

device, the led of

test in the remote

device is bright.

(This test is

effective in frame

E1.)

ON OFF OFF ON OFF OFF OFF OFF Bright Green Local device test

OK.

OFF OFF OFF ON OFF ON OFF OFF Bright Green Local device and

E1 line test OK.

OFF ON OFF ON OFF OFF OFF OFF Not

bright Green

Local device in test

mode and loop is

not set right. It is

inanition.

OFF OFF ON ON OFF OFF OFF OFF Bright Green

Local device,

remote device and

E1 line test OK.

This test is effective

in frame E1.

Table 11. PATT testing

NOTE:

After test resume all the test and loop switches to the default settings, all

OFF, or the device can’t work.

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14-20

yFollow(SW-8)

BIT8 of SW is used to set follow or unfollow the opposite device time slot

settings. Only used in LINE clock and the opposite device INTERNAL

clock:

SW Definition Specification Default

ON: unfollow

SW-8 Follow

OFF: follow ON

Table 12. Settings of follow

NOTE:

This function is available between the same type products (include Card

type) of our company.

User Manual

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Chapter 3 Installation

3.1 Appearance checking

1) After you received the devices, firstly you should check whether the

packing is well, otherwise, please contact with our company or the

local agent in time so as to solve the problem.

2) After opening the box, you should check whether the device and the

fittings are correct and well according to the incasement list,

otherwise please contact with our company or the local agent.

3.2 Installation process

1) Firstly place the device at a steady position, the working environment

should be dry, tidy, ventilative, and the temperature should be

reasonable.

2) Check whether the clock and time slots control switch are right

before connecting the power supply. The device is set internal

oscillator when leave factory, if it is point-to-point application, please

adjust one side internal oscillator, the other side line clock, which

will follow the time slots setting automatically.

3) Check the power collocation of FE1/V.35 interface converter, if it is

DC model, please pay attention to the voltage value and polarity,

then connect the power supply referring to this manual.

4) Please test the device before using: open the power switch, indicator

(PWR) is bright, which show the power supply is normal; when you

don’t connect anything, PWR(Green)、E1LOS(Red) are all bright, the

others are off.

5) Shut down the power, connect the E1 cables and V.35 cables, set the

clock and time slots control switch correctly referring to this manual,

then open the power switch, the device will turn into normal working

state.

3.3 Installation notice proceeding

1) During the process of transportation and installation, the device

should be protected against vibration and mechanical damages.

2) Please examine the voltage value and whether the polarity is in

accord with the mark on the rear panel before electrifying, or else the

User Manual

16-20

device may be caused permanent damages.

3) The device has already adjusted optimal status before leaving factory,

please don’t take apart the device privately if non technicians of our

company.

4) When the device has failure, you can make sure the failure range

through self-loop function with the device, and contract with

technical service center of our company in time.

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Chapter 4 Troubleshooting

Normal working status: when FE1/V.35 interface converter works

normally, PWR (Green) indicator is bright, TXD (Yellow)、RXD (Yellow)

indicators are blinking, the others are off.

When the device has failure, firstly make sure the failure range

according to the status of the indicators, then deal with the problem.

yTrouble phenomenon: no reaction after electrifying

Diagnosis:

Examine the power supply, if it is DC model, make sure the

polarity, if the wire is connected inversely, please correct it! If it is

AC model, please make sure whether the power control switch is

open.

Exclusion:

Correct the power connection or open the power control switch.

yTrouble phenomenon: E1LOS indicator is bright

Diagnosis:

The device is set Internal oscillator, loopback the input and

output ports by E1 cable, if this indicator is off, then mainly

examine the E1 cable.

Exclusion:

Examine whether the receiving and transmitting E1 cables are

inverse, if so please correct them; whether the E1 connectors are

loosened, if so please make them again.

yTrouble phenomenon: E1LOS indicator is off, but E1LOF indicator

is bright

Diagnosis:

This trouble is about due to three reasons hereinafter:

1) The core doesn’t connect with skin of E1 input cable, or core

and skin are intercrossed, or only connect one thread of

120Ωcable.

2) The two sides are both set to internal clock, moreover the

time slots are different. Or one end is set to Internal clock,

the other end is set to line clock but isn’t set to follow the

time slots of the opposite end automatically, or the time slots

is wrong.

3) The FE1/V.35 interface converter works at external clock

mode, but the clock rate provided by the external device is

different from that of it.

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Exclusion:

1) Make the E1 cables again.

2) Make sure there is only one internal clock in the whole lines,

the others are all line clock. Adjust the time slots settings to

ensure that the device works at one kind of time slots

settings, or follow the time slots of the opposite device

automatically.

3) Adjust the clock rate of FE1/V.35 interface converter or the

device connected to it, ensure that the two devices both

work at the same kind of clock rate.

yTrouble phenomenon: some data has lost during the course of

communication

Diagnosis:

Make sure whether all devices are set to line clock or more than

Two are set to internal clock.

Exclusion:

Two internal clocks will lead to some data lost, two line clocks

may lead to the line not on-hook; adjust the clock to make sure

only one device provide clock in one line.

yTrouble phenomenon: the line can not get through when the device

connect to DCE devices

Diagnosis:

1) Please pay attention to the clock association when FE1/V.35

interface converter connect to DCE device via crossover

cable, if DCE device is set to internal clock, then FE1/V.35

interface converter should be set to external clock; if DCE

device is set to external clock, then FE1/V.35 interface

converter should be set to internal clock.

2) Confirm the line sequence of DCE device connected to

FE1/V.35 interface converter.

Exclusion:

1) Adjust the clock settings.

2) Make the V.35 crossover cable again according to the V.35

sequence provided in this manual.

User Manual

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Chapter 5 Appendix Table

(PCM31)

1920K (PCM31)

1856K (PCM31)

1792K (PCM31)

1728K (PCM31)

1664K (PCM31)

1600K (PCM31)

1536K (PCM31)

1472K (PCM31)

1408K (PCM31)

1344K (PCM31)

1280K (PCM31)

1216K (PCM31)

1152K (PCM31)

1088K (PCM31)

1024K (PCM31)

960K (PCM31)

896K (PCM31)

832K (PCM31)

768K (PCM31)

704K (PCM31)

640K (PCM31)

576K (PCM31)

512K (PCM31)

448K (PCM31)

384K (PCM31)

320K (PCM31)

256K (PCM31)

192K (PCM31)

128K (PCM31)

64K (PCM31)

Rate SW

OFF

0

ON

1

ON

2

ON

3

ON

4

ON

5

ON

6

ON

7

ON

8

ON

9

ON

10

ON

11

ON

12

ON

13

ON

14

ON

15

ON

16

ON

17

ON

18

ON

19

ON

20

ON

21

ON

22

ON

23

ON

24

ON

25

ON

26

ON

PCM31

27

ON

Blank is OFF!

28

ON

29

ON

30

ON

31

Reference Table of Time Slot Settings

——

PCM31

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20-20

2048K

1920K (PCM30)

1856K (PCM30)

1792K (PCM30)

1728K (PCM30)

1664K (PCM30)

1600K (PCM30)

1536K (PCM30)

1472K (PCM30)

1408K (PCM30)

1344K (PCM30)

1280K (PCM30)

1216K (PCM30)

1152K (PCM30)

1088K (PCM30)

1024K (PCM30)

960K (PCM30)

896K (PCM30)

832K (PCM30)

768K (PCM30)

704K (PCM30)

640K (PCM30)

576K (PCM30)

512K (PCM30)

448K (PCM30)

384K (PCM30)

320K (PCM30)

256K (PCM30)

192K (PCM30)

128K (PCM30)

64K (PCM30)

Rate SW

ON

OFF

0

ON

1

ON

2

ON

3

ON

4

ON

5

ON

6

ON

7

ON

8

ON

9

ON

10

ON

11

ON

12

ON

13

ON

14

ON

15

OFF

16

ON

17

ON

18

ON

19

ON

20

ON

21

ON

22

ON

23

ON

24

ON

25

ON

26

ON

PCM30

27

ON

Blank is OFF!

28

ON

29

ON

30

ALLOFF

ANY Settings

ON

31

Reference Table of Time Slot Settings

——

PCM30

Anda Telecom FE1/V.35 User manual

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