slide1 l.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
INTRODUCTION TO PBX PowerPoint Presentation
Download Presentation
INTRODUCTION TO PBX

Loading in 2 Seconds...

play fullscreen
1 / 35

INTRODUCTION TO PBX - PowerPoint PPT Presentation


  • 346 Views
  • Uploaded on

INTRODUCTION TO PBX. PRIVATE BRANCH EXCHANGE. To international. Provincial Area. SC. ITSC. International telephone switching center. PC. LE. SC. SC. Secondary center. Tandem. GSP. TA Network. Tandem exchange. TE. TE. RCU. Subscriber. subscriber. LE. Local exchange. LE. LE.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'INTRODUCTION TO PBX' - issac


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide1

INTRODUCTION TO PBX

PRIVATE BRANCH EXCHANGE

slide2

To international

Provincial Area

SC

ITSC

International telephone switching center

PC

LE

SC

SC

Secondary center

Tandem

GSP

TA

Network

Tandem exchange

TE

TE

RCU

Subscriber

subscriber

LE

Local exchange

LE

LE

LE

Remote

subscriber

TELEPHONE NETWORK (PSTN)

subscriber

METROPOLITAN Area

slide3

subscriber

Subscriber line

Local exchange

Subscriber line

Extension

PBX

LE

TE

Remote switch

Digital trunk(PCM)

Digital trunk (PCM)

Subscriber line

Subscriber line

LE

PBX

Extension

PBX LOCATION

subscriber

slide4

PBX

EXTENSION

CO LINE

111

PSTN

500-1000

500-1001

222

500-1003

333

TIE LINE to PBX

ATTENDENT CONSOLE

500-1111

slide5

Traffic cases

1. Internal Call

2. Operator Call

3. Outgoing Call

4. Incoming Call

5. Transit Call

Extension to Extension

Extension to Operator

Extension to PSTN

PSTN to Extension via operator

PBX TO PBX

PBX TYPE

1. PMBX Private Manual Branch Exchange

2. PABX Private Automatic Branch Exchange

slide6

PBX

EXTENSION

CO LINE

111

PSTN

500-1000

500-1001

500-1111

222

500-1003

333

TIE LINE to PBX

ATTENDENT CONSOLE

slide7

PBX

EXTENSION

660-2222

Dial Access code 9 or 0

CO LINE

111

PSTN

500-1000

500-1001

222

500-1003

333

TIE LINE to PBX

ATTENDENT CONSOLE

500-1111

slide8

PBX

INTERFACE TOPSTN

EXTENSION

111

PSTN

500-1111

222

TIE line

333

Extension

ATTENDENT CONSOLE

PBX

slide9

TYPE OF INTERFACE TO PSTN

1. CO line (analog subscriber line)

- Individual line

- Multi - Hunting Group

2. PCM DID

3. BAI - ISDN

4. Primary - ISDN

5. TIE line analog Interface between PBXs

slide10

PBX

EXTENSION

CO LINE

111

PSTN

500-1000

500-1001

222

500-1003

333

TIE LINE to PBX

ATTENDENT CONSOLE

Individual line interface

500-1111

slide11

PBX

EXTENSION

Pilot number 500-1000

111

PSTN

500-1000

500-1001

222

500-1003

333

Member 500-1001,501-1003

TIE LINE to PBX

ATTENDENT CONSOLE

Multi hunting group line interface

500-1111

slide12

PBX

EXTENSION

500-1111

CO LINE

PSTN

111

500-1000

500-1001

222

500-1003

333

2. Call via DISA(Direct in to station

access) with IVR (interactive voice

response)

IVR

ATTENDENT CONSOLE

Incoming call from PSTN without DID

1. Call via operator

slide13

PBX

EXTENSION

Digital trunk interface

PSTN

111

222

DTMF and MFCR2

signaling

333

Interface with digital trunk (PCM E1)

Not used Operator

Incoming call with DID

500-1111

Call from PSTN direct to Extension

slide14

PBX

EXTENSION

666

111

222

555

TIE line trunk

333

Connected between PBXs

used Proprietary interface protocol

used 4 wire E&M trunk or 2 wire trunk Interface

TIE line interface

PBX

slide15

CO line Interface Signaling

Muti-hunting Function

- Sequential type

- random type

Multi-hunting member

- pilot number

- member with DN

- member without DN

- Member with slip function

- Member without slip function

1.line Signaling

- dc loop

- reverse polarity

- reverse pulse

- ground start

- 16 khz

2. Addressing signal

- DP

- DTMF

slide16

CO line interface

PBX

EXTENSION

CO line interface

DTMF

P

S

T

N

111

222

DP

333

Subscriber line interface

CO line interface

Line interface circuit

Line signaling

1.DC loop 4.ground start

2.Reverse polarity 5.16 kHz

3.Reverse Pulse

Register signaling

1.Dial pulse(DP)

2.Dual tone Multi-frequency(DTMF)

500-1111

slide17

1. Addressing signaling (register signaling)

1. 1 Dial pulse (DP)

1.2 Dual tone multi frequency(DTMF)

1209hz

1366hz

1477hz

697 hz

1

2

3

770hz

4

5

6

852hz

7

8

9

941hz

*

0

#

CO line Interface Signaling

slide18

-

48 v

DC loop

+

Speech circuit

CO line interface

Line circuit

CO line Interface Signaling

2. line Signaling

2.1 dc loop

2.2 reverse polarity

2.3 reverse pulse

2.4 ground start

2.5 16 kHz

Local exchange

PBX

Subscriber line interface

CO line interface function

- detect ringing signal from LE

- Send on hook/off hook signal to line circuit

- detect line signaling from LE for start charging system

- conversation channel

slide19

REVERSE POLARITY

Local exchange

PBX

RELAY

-

48 v

DC loop

+

Speech circuit

control

CO line interface

A sub.

Line circuit

B sub.

After subscriber B answer control function in line circuit control relay

for reverse dc polarity

slide20

PBX

-

48 v

DC loop

+

Speech circuit

control

CO line interface

A sub.

Line circuit

Line circuit

PULSE

B sub.

After subscriber B answer control function in line circuit send pulse to

CO line interface for charging system

REVERSE PULSE

Local exchange

slide21

Local exchange

GROUND start

PBX

-

48 v

DC loop

+

SLV

G

Speech circuit

A sub.

B sub.

CO line interface

Line circuit

Subscriber line interface

Ground signal

Sleeve Relay

Used ground signal for send charging signal to PBX

slide22

16 KHz

Local exchange

PBX

-

48 v

DC loop

+

Speech circuit

A sub.

B sub.

CO line interface

Line circuit

Subscriber line interface

Osc 16KHz

Used 16 KHz signal send from LE to PBX for charging system

slide23

TO type for hunting method

1.Sequence hunting

2. Random hunting

Multi hunting group

PBX

EXTENSION

Pilot number 500-1000

111

PSTN

500-1000

500-1001

500-1111

222

EL=xxxxxx

333

Member with DN

Member without DN

Member with slip/without slip

for incoming call from LE

ATTENDENT CONSOLE

slide24

PABX Service Feature

1. MUSIC ON HOLD

2. DISA direct into station access and OGM (outgoing message unit)

3.outward dialing

4.Class of service (outgoing call to CO line)

5.speed dial

6.pick up group

7. CO line automatic disconnect

8. HOT LINE with delay/without delay

9.call forwarding

10.call fording without answer

11.call forwarding with busy

12 call waiting

13.conference between Co line and extension

14 REDIAL

slide25

Service feature call pick up group

Call from PSTN to extension number 111 but

extension 222 or 333 can be answer

PBX

EXTENSION

ringing

500-1000

111

PSTN

500-1001

answer

500-1111

222

500-1003

answer

333

Call pickup group

ATTENDENT CONSOLE

slide26

Service feature call forwarding

Call from PSTN to extension number 111 but

system forward call to extension number 222

PBX

EXTENSION

500-1000

111

PSTN

ringing

500-1001

500-1111

222

500-1003

333

3 type for forwarding

1.forward no condition

2.forward for busy

3.forward no answer

ATTENDENT CONSOLE

slide29

Service feature conference call

PBX

EXTENSION

Conference circuit

500-1000

111

PSTN

500-1001

500-1111

222

500-1003

333

2 type for conference

1. 1 Extension 2 PSTN SUB.

2. 1 PSTN sub. 2 Extension

Conference circuit

ATTENDENT CONSOLE

slide30

operator

DIGITAL

PSTN

SLC-D

TRUNK

Digital telephone

ANALOG

SLC-D

TRUNK

Analog telephone

SLC-A

TIE.T

Tie line

Voice memory

O&M

VMI

I/O

I/O

Music

I/O

Hotel-system

PBX architecture

slide31

SLC-D : Digital Subscriber line circuit

SLC-A : Analog Subscriber line circuit

VMI : Voice memory interface

I/O : Input Output device interface

TRUNK: digital/analog trunk interface to PSTN

TIE.T : TIE line Trunk interface to PBX

slide32

DID PBX

DTI

6020020

DTI

DTI (PCM30)

123

E1

456

6020030

E1

DID PBX

Exchange code

8051

Exchange code

602

Signaling

- DTMF,MFC R2

- Primary (DSS1)

GSP

300

Interface between GSP and PBX

- DTI (PCM30) digital trunk interface

- Two type of signaling

- analog (MFC R2 and DTMF)

- Digital primary rate access (DSS1)

Call set up

- Call direct from public network to PBX extension

(EX. Dial 8051123)

- call from PBX to public dial access code (EX. 9 or 0)

slide33

GSP

DID PBX

DTI

6020020

DTI

DTI (PCM30)

123

E1

MFC R2

6020030

E1

Exchange code

602

Exchange code

8051

Dial 02 8051 123

Sizure

Sz.ACK

Digit “0”

A1

MFC R2

Digit “3”

A3

Cat. 2(ord.)

ringing

B1(Free with charge)

Ring tone

Answer

Answer

Conversation

Call flow from GSP to DID (MFC R2)

456

slide34

DTI

6020020

DTI

DTI (PCM30)

123

E1

MFC R2

6020030

E1

Call floe from DID to GSP (DTMF)

Exchange code

602

Exchange code

8051

Dial access code(9or0)

Sizure

Sz.ACK

Dial tone

Dial digit (DTMF) “0”

DTMF (digit 0)

Dial digit (DTMF) “0”

DTMF (digit 0)

ringing

Ring tone

Answer

Answer

Conversation

456

DTMF

slide35

GSP

ISP (Remote access server)

Trunk group

DTI

DTI

E1 PCM30

E1 PCM30

Signaling interface

- MFC R2 Signaling

- CCS No7 Signaling

Access number 6000000

Trunking Access

Data base

Digit analysis 6000000

Routing

Trunk group