Anda Telecom FE1/V.35 User manual

FE1/V.35 Interface Converter

Version: V3.2.4

Date: 5.12.2005

User Manual

2-20

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

3-20

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

Interface

Electric characteristic: comply with ITU-T G.703

standard

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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

User Manual

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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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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

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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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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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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.

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