Ψηφιακό Δίκτυο Ολοκληρωμένων Υπηρεσιών Integrated Services...
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Ψηφιακό Δίκτυο Ολοκληρωμένων Υπηρεσιών Integrated Services Digital Network. ISDN. ΤΙ ΥΠΗΡΧΕ ……. Ένα αναλογικό τηλεφωνικό σύστημα το οποίο ήταν καλό για την μετάδοση φωνής αλλά ανεπαρκές για τις ανάγκες της σύγχρονης επικοινωνίας. ΤΙ ΕΠΡΕΠΕ ΝΑ ΓΙΝΕΙ ;. - PowerPoint PPT Presentation
Transcript of Ψηφιακό Δίκτυο Ολοκληρωμένων Υπηρεσιών Integrated Services...
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Integrated Services Digital NetworkISDN
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.
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. ISDN. ; ;
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ISDN 1984 1988 CCITT. ; ISDN; ;
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(.. ) (.. ) (.. ) CCITT ;
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( ;) (.. ) CCITT ; ( .. ) (videotex) (.. , .
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(teletex) CCITT ; e-mail ) (fax) fax On line real time video (telemetry)..
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(alarm) CCITT ; , ,
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To ISDN , ISDN To PSTN , 4 KHz. ..
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(CCIS) ISDN .
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(, , CCIS) ISDN
ISDN
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, : . ISDN , (end to end) , , . .TI EINAI TO ISDN;
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ISDN :
(hardware), (software)
TI EINAI TO ISDN;
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ISDN :
, , & Internet / & ( , )
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ISDN , , , : - -
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4 KHzB PCM 64 KbpsC 8 16 KbpsD 16 64 Kbps E 64 Kbps ISDN 384, 1536, 1920 Kbps
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ISDN
- BRA 64 kbps ( PCM 8 KHz 256 D 16 kbps (2B + D)
- PRA 30 64 kbps D 64 kbps (30 B + D). (23 + D)
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ISDN
BRAPRA
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ISDN
ISDN bit bits, (, fax ) (BRA) (PRA) .
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BA (BRA)
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BA (BRA) ()
NT1 NT1 (Network Terminating device)
To 1 : ( )
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BA (BRA) ()
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BA (BRA) ...
SOHOs ( , )
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ISDN-BRA &
, , 8 , , fax, , , 10 . : & Internet & fax
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ISDN-BRA & ()
128 kbps Internet , & Internet, Hellaspac, PSTN 2B
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ISDN-BRA & ()
(R) - CTI (Computer elephony Integration) / ISDN routers ( Hi-Fi, ) & ack up -
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BRA . 2 64 kbps D 16 kbps. Point to point Point to Multipoint :Point to Point ISDN. .
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BRA
Point to Multipoint, 8
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BRA
(Network Termination) (Passive Bus) (Terminal Adapter)K ISDN ISDN ISDN ISDN Fax Group 4 Routers ISDN
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BRA
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(PRA)
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(PRA) ( )
ISDN1 : ISDN2 : ISDN TA : NT2 : PBX ( ) U : NT1 ISDNT : NT1 S : 2 ISDN R : TA ISDN
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(PRA) ( )
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(PRA) ( )
NT1 NT2 O NT2 NT1 NT1, 2 NT1, NT2 1 2 1 3 ( 12)
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ISDN (PRA) ...
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ISDN - PRA & 30 ( / ) , 250 . / (LAN, WAN) 2 Mbps & Internet, Hellaspac, PSTN Internet , 128 kbps (ISP)
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PRA
2Mbps ( PCM). 30 B 64 kbps D 64 kbps 2Mbps. point to point, (ISPBX Router)
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PRA
ISDN (ISPBX) (switching functions), .Routers ISDN . . ISDN ISDNFax Group 4
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PRA
ISPBX ROUTER
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BRA PRA
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Calling Line Identification (CLIP / CLIR) Multiple Subscriber Number (MSN) 8 (ISDN-BRA)Direct Dialing In (DDI) Advice of Charge (AOC) Closed User Group (CUG)
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Malicious Call Identification (MCI)
Call Hold (CH)
Sub Addressing (SUB)
User to User Signalling (UUS)
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Call Waiting (CW)
Call Forwarding (CFU)
Terminal Portability (TP)
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ISDN
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ISDN - -
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ISDN - ISDN - INTERNET - ---- -
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, , .
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, - (Open and Distance Learning - ODL) : ,
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( audio-video-data) : PowerPoint WhiteBoard ..
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( ) ( ) (, , , video, animation ...) / ( ) ( )
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NETMOD
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NETMOD( ) 1 (1) ISDN (TA) 2 ISDN ISDN (ISDN modem) : firmware :www.intracom.gr
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NETMOD
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NETMOD( )
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NETMOD( )
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NETMOD( )
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NETMOD( )
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NETMOD( )
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NETMOD( )
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NETMOD( )
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ISDN LCD ,
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ISDN 14 cm , LCD ,
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ISDN
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ISDN PC ISDN FAX G3 FAX G4 internetCall back USB PC
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ISDN PC camera DirectXVideo recordingRemote control
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ISDN PC ISDN
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ISDN / laptop
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( )
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O ISDN INTERNET 64 Kbps 128 Kbps (115200 bps ) : netmod modem 128 Kbps
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O ISDN INTERNETFast Gate BASIC (ISDN Dynamic 64 Kbps)
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O ISDN INTERNETFast Gate ADVANCED (ISDN Dynamic 128 Kbps)
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O ISDN INTERNET Office Gate
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O ISDN INTERNETOffice Gate
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ISDN
Chart1
239471412
444402819
615812946
ISDN
Sheet1
199819995-Jul-00
239474444061581
141228192946
Sheet1
00
00
00
ISDN
Sheet2
Sheet3
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1999 2000 2001 BRA 30.000 20.000 15.000 . PRA 800.000 500.000 500.000 .
BRA 6.000 6.000 4.500 . PRA 110.000 100.000 100.000 .
(PSTN).
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ISDN: , . 134 Internet http://www.ote-shop.gr /fax 6178910 e-mail [email protected] & [email protected]
